<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0872-1904</journal-id>
<journal-title><![CDATA[Portugaliae Electrochimica Acta]]></journal-title>
<abbrev-journal-title><![CDATA[Port. Electrochim. Acta]]></abbrev-journal-title>
<issn>0872-1904</issn>
<publisher>
<publisher-name><![CDATA[Sociedade Portuguesa de Electroquímica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0872-19042021000600421</article-id>
<article-id pub-id-type="doi">10.4152/pea.2021390604</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Iron Determination in Deep Groundwater Wells by Anodic Stripping Voltammetry at an Iodine-Coated Platinum Electrode]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Amayreh]]></surname>
<given-names><![CDATA[Mohammad]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hourani]]></surname>
<given-names><![CDATA[Mohammed K.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alomari]]></surname>
<given-names><![CDATA[Rima]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hourani]]></surname>
<given-names><![CDATA[Wafa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Al-Balqa Applied University Faculty of Science Department of Chemistry]]></institution>
<addr-line><![CDATA[Al-Salt ]]></addr-line>
<country>Jordan</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,University of Jordan Department of Chemistry ]]></institution>
<addr-line><![CDATA[Amman ]]></addr-line>
<country>Jordan</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Al-Ahliyyah Amman University Faculty of Pharmacy ]]></institution>
<addr-line><![CDATA[Amman ]]></addr-line>
<country>Jordan</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Philadelphia University Faculty of Pharmacy ]]></institution>
<addr-line><![CDATA[Amman ]]></addr-line>
<country>Jordan</country>
</aff>
<pub-date pub-type="pub">
<day>30</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>30</day>
<month>12</month>
<year>2021</year>
</pub-date>
<volume>39</volume>
<numero>6</numero>
<fpage>421</fpage>
<lpage>430</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S0872-19042021000600421&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S0872-19042021000600421&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S0872-19042021000600421&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The presented work was pivoted on iron (II) determination in deep groundwater wells samples by using anodic stripping technique at an iodine-coated platinum electrode. The developed method was based on a preconcentration step for five min., followed by the potential scanning of an iodine-coated platinum electrode between the limit of hydrogen evolution (-0.25 V) and the beginning of iodine desorption from the electrode surface (+0.85 V). The anodic peak of the deposited iron to iron (II) oxidation was clearly centered at ca. 0.74 V. The anodic peak current showed an excellent linear response (R2 = 0.996), within an iron (II) concentration range from 1 to 100 ppm. The obtained limit of detection (LOD) was 0.26 ppm and the limit of quantification (LOQ) was 0.85 ppm. Within the iodine-coated platinum electrode potential window the possible interferences by several ions were evaluated. The developed method was examined by iron (II) concentration determination in deep groundwater wells. The statistical comparisons between the two methods showed the absence of any significant difference between the obtained Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES) values and our voltammetric method results, at P = 0.05.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[iron (II) determination]]></kwd>
<kwd lng="en"><![CDATA[deep groundwater]]></kwd>
<kwd lng="en"><![CDATA[stripping voltammetry and iodine-coated platinum electrode]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="book">
<collab>World Health Organization</collab>
<source><![CDATA[Iron in drinking-water: background document for development of WHO guidelines for drinking-water quality; WHO/SDE/WSH/0.3.04/08]]></source>
<year>2003</year>
<publisher-loc><![CDATA[Geneva ]]></publisher-loc>
<publisher-name><![CDATA[Switzerland]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Min]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Neil]]></surname>
<given-names><![CDATA[VR]]></given-names>
</name>
<name>
<surname><![CDATA[Alex]]></surname>
<given-names><![CDATA[SK]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determination of iron electrochemical methods]]></article-title>
<source><![CDATA[Electroanalysis]]></source>
<year>2012</year>
<volume>24</volume>
<page-range>1-10</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Attiq-ur-Rehman]]></surname>
<given-names><![CDATA[AW]]></given-names>
</name>
<name>
<surname><![CDATA[Yaqoob]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Flow injection spectrophotometric determination of total iron in fresh waters using 1, 10-phenanthroline reagent]]></article-title>
<source><![CDATA[J Chem Soc Pak]]></source>
<year>2008</year>
<volume>30</volume>
<page-range>836-9</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gu]]></surname>
<given-names><![CDATA[X]]></given-names>
</name>
<name>
<surname><![CDATA[Zhou]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determination of iron (II) in water by spectrophotometric method after preconcentration on an organic solvent-soluble membrane filter]]></article-title>
<source><![CDATA[Analyt Letter]]></source>
<year>1996</year>
<volume>29</volume>
<page-range>463-76</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Stasys]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Laura]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Rolandas]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determination of iron in natural and mineral waters by flame atomic absorption spectrometry]]></article-title>
<source><![CDATA[J Serb Chem Soc]]></source>
<year>2004</year>
<volume>69</volume>
<page-range>393-402</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Roberta]]></surname>
<given-names><![CDATA[NCSC]]></given-names>
</name>
<name>
<surname><![CDATA[Geysa]]></surname>
<given-names><![CDATA[BB]]></given-names>
</name>
<name>
<surname><![CDATA[Maria]]></surname>
<given-names><![CDATA[GAK]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Multi-element determination of copper, iron, nickel, manganese, lead and zinc in environmental water samples by ICP OES after solid phase extraction with a C18 cartridge loaded with 1-(2-pyridylazo)-2-naphthol]]></article-title>
<source><![CDATA[Anal Methods]]></source>
<year>2015</year>
<volume>7</volume>
<page-range>8714-9</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sofikitis]]></surname>
<given-names><![CDATA[AM]]></given-names>
</name>
<name>
<surname><![CDATA[Colin]]></surname>
<given-names><![CDATA[JL]]></given-names>
</name>
<name>
<surname><![CDATA[Desboeufs]]></surname>
<given-names><![CDATA[KV]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Iron analysis in atmospheric water samples by atomic absorption spectroscopy (AAS) in water-methanol]]></article-title>
<source><![CDATA[Anal Bioanal Chem]]></source>
<year>2004</year>
<volume>378</volume>
<page-range>460-4</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sharma]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Tyagi]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Simplification of metal ion analysis in fresh water samples by atomic absorption spectroscopy for laboratory students]]></article-title>
<source><![CDATA[J Lab Chem Educ]]></source>
<year>2013</year>
<volume>1</volume>
<page-range>54-8</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Croot]]></surname>
<given-names><![CDATA[PL]]></given-names>
</name>
<name>
<surname><![CDATA[Johansson]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determination of iron speciation by cathodic stripping voltammetry in seawater using the competing ligand 2-(2-Thiazolylazo)-p-cresol (TAC)]]></article-title>
<source><![CDATA[Electroanalysis]]></source>
<year>2000</year>
<volume>12</volume>
<page-range>565-76</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gledhill]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determination of complexation of iron (III) with natural organic complexing ligands in seawater using cathodic stripping voltammetry]]></article-title>
<collab>Van Den Berg MG</collab>
<source><![CDATA[Marine Chem]]></source>
<year>1994</year>
<volume>47</volume>
<page-range>41-54</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Aldrich]]></surname>
<given-names><![CDATA[AP]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determination of iron and its redox speciation in seawater using catalytic cathodic stripping voltammetry]]></article-title>
<collab>Van Den Berg MG</collab>
<source><![CDATA[Electroanalysis]]></source>
<year>1998</year>
<volume>10</volume>
<page-range>369-73</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ugo]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Moretto]]></surname>
<given-names><![CDATA[LM]]></given-names>
</name>
<name>
<surname><![CDATA[Rudello]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Trace iron determination by cyclic and multiple square-wave voltammetry at nafion coated electrodes Application to Pore-Water Analysis]]></article-title>
<source><![CDATA[Electroanalysis]]></source>
<year>2001</year>
<volume>13</volume>
<page-range>661-8</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zakharova]]></surname>
<given-names><![CDATA[EA]]></given-names>
</name>
<name>
<surname><![CDATA[Elesova]]></surname>
<given-names><![CDATA[EE]]></given-names>
</name>
<name>
<surname><![CDATA[Noskova]]></surname>
<given-names><![CDATA[GN]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Direct voltammetric determination of total iron with a gold microelectrode ensemble]]></article-title>
<source><![CDATA[Electroanalysis]]></source>
<year>2012</year>
<volume>24</volume>
<page-range>2061-9</page-range></nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mikkelsen]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
<name>
<surname><![CDATA[Schroder]]></surname>
<given-names><![CDATA[KH]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Voltammetric monitoring of bivalent iron in waters and effluents, using a dental amalgam sensor electrode Some Preliminary Results]]></article-title>
<source><![CDATA[Electroanalysis]]></source>
<year>2004</year>
<volume>16</volume>
<page-range>386-90</page-range></nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Inour]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Ito]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determination of trace amounts of iron (II,III) in natural water by reversed- phase high-performance liquid chromatography]]></article-title>
<source><![CDATA[Microchem J]]></source>
<year>1994</year>
<volume>49</volume>
<page-range>249-55</page-range></nlm-citation>
</ref>
<ref id="B16">
<label>16</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Schnell]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Ratering]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Jansen]]></surname>
<given-names><![CDATA[K-H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Simultaneous detection of iron (III), iron (II), and manganese (II) in environmental samples by ion chromatography]]></article-title>
<source><![CDATA[Environ Sci Technol]]></source>
<year>1998</year>
<volume>32</volume>
<page-range>1530-7</page-range></nlm-citation>
</ref>
<ref id="B17">
<label>17</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Barek]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Moreira]]></surname>
<given-names><![CDATA[JC]]></given-names>
</name>
<name>
<surname><![CDATA[Zima]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Modern electrochemical methods for monitoring of chemical carcinogens]]></article-title>
<source><![CDATA[Sensors]]></source>
<year>2005</year>
<volume>5</volume>
<page-range>148-58</page-range></nlm-citation>
</ref>
<ref id="B18">
<label>18</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zosk]]></surname>
<given-names><![CDATA[CG]]></given-names>
</name>
</person-group>
<source><![CDATA[Handbook of Electrochemistry]]></source>
<year>2007</year>
<publisher-loc><![CDATA[Boulevard ]]></publisher-loc>
<publisher-name><![CDATA[UK]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B19">
<label>19</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hourani]]></surname>
<given-names><![CDATA[MK]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determination of silver (I) by cyclic voltammetry at iodine-coated electrodes]]></article-title>
<source><![CDATA[Analyst]]></source>
<year>1994</year>
<volume>119</volume>
<page-range>1975-8</page-range></nlm-citation>
</ref>
<ref id="B20">
<label>20</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Felter]]></surname>
<given-names><![CDATA[TE]]></given-names>
</name>
<name>
<surname><![CDATA[Hubbard]]></surname>
<given-names><![CDATA[AT]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[L e.e.d. and electrochemistry of iodine on Pt (100) and Pt (111) single-crystal surfaces]]></article-title>
<source><![CDATA[J Electroanal Chem]]></source>
<year>1979</year>
<volume>100</volume>
<page-range>473-91</page-range></nlm-citation>
</ref>
<ref id="B21">
<label>21</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Podlovchenko]]></surname>
<given-names><![CDATA[BI]]></given-names>
</name>
<name>
<surname><![CDATA[Kolyadko]]></surname>
<given-names><![CDATA[EA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Adsorption of carbon monoxide on platinized platinum electrode with preadsorbed iodine and iodide anions]]></article-title>
<source><![CDATA[Russian J Electrochem]]></source>
<year>2003</year>
<volume>8</volume>
<page-range>823-7</page-range></nlm-citation>
</ref>
<ref id="B22">
<label>22</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Thomas]]></surname>
<given-names><![CDATA[AE]]></given-names>
</name>
<name>
<surname><![CDATA[Wieckowski]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Surface diffusion limited desorption of iodine on a platinum electrode]]></article-title>
<source><![CDATA[J Electroanalyt Chem]]></source>
<year>1995</year>
<volume>399</volume>
<page-range>207-12</page-range></nlm-citation>
</ref>
<ref id="B23">
<label>23</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mebrahtu]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Rodriguez]]></surname>
<given-names><![CDATA[JF]]></given-names>
</name>
<name>
<surname><![CDATA[Bravo]]></surname>
<given-names><![CDATA[BG]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Hydrogenative/cathodic stripping of iodine chemisorbed on smooth polycrystalline platinum electrode]]></article-title>
<source><![CDATA[J Electroanal Chem]]></source>
<year>1987</year>
<volume>219</volume>
<page-range>327-33</page-range></nlm-citation>
</ref>
<ref id="B24">
<label>24</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cox]]></surname>
<given-names><![CDATA[JA]]></given-names>
</name>
<name>
<surname><![CDATA[Kulesza]]></surname>
<given-names><![CDATA[PJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Oxidation and determination of nitrite at modified electrodes]]></article-title>
<source><![CDATA[J Electroanal Chem]]></source>
<year>1984</year>
<volume>175</volume>
<page-range>105-18</page-range></nlm-citation>
</ref>
<ref id="B25">
<label>25</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hourani]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Jarar]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Arar]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Atmospheric SO2 determination by voltammetric analysis at an iodine-coated platinum electrode]]></article-title>
<source><![CDATA[Electroanalysis]]></source>
<year>1999</year>
<volume>9</volume>
<page-range>637-40</page-range></nlm-citation>
</ref>
<ref id="B26">
<label>26</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hourani]]></surname>
<given-names><![CDATA[MK]]></given-names>
</name>
<name>
<surname><![CDATA[Esaifan]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Indirect voltammetric method for determination of nitrogen dioxide in the ambient atmosphere]]></article-title>
<source><![CDATA[Jordan J Chem]]></source>
<year>2009</year>
<volume>4</volume>
<page-range>367-75</page-range></nlm-citation>
</ref>
<ref id="B27">
<label>27</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hourani]]></surname>
<given-names><![CDATA[MK]]></given-names>
</name>
<name>
<surname><![CDATA[Hijaz]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Voltammetric analysis of hydroquinone and catechol at iodine-coated polycrystalline platinum electrode]]></article-title>
<source><![CDATA[J Nat and Eng Sci]]></source>
<year>2014</year>
<volume>8</volume>
<page-range>25-9</page-range></nlm-citation>
</ref>
<ref id="B28">
<label>28</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lane]]></surname>
<given-names><![CDATA[RF]]></given-names>
</name>
<name>
<surname><![CDATA[Hubbard]]></surname>
<given-names><![CDATA[AT]]></given-names>
</name>
<name>
<surname><![CDATA[Fukunaga]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Brain catecholamines detection in vivo by means of differential pulse voltammetry at surface-modified platinum electrodes]]></article-title>
<source><![CDATA[Brain Research]]></source>
<year>1976</year>
<volume>114</volume>
<page-range>346-52</page-range></nlm-citation>
</ref>
<ref id="B29">
<label>29</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Malassa]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Al-Qutob]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Al-Khatib]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determination of different trace heavy metals in ground water of south west bank/palestine by ICP/MS]]></article-title>
<source><![CDATA[J Environment Protec]]></source>
<year>2013</year>
<volume>4</volume>
<page-range>818-27</page-range></nlm-citation>
</ref>
<ref id="B30">
<label>30</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Reiman]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Matschullat]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Birke]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Antimony in the environment lessons from geochemical mapping]]></article-title>
<source><![CDATA[Appl Geochem]]></source>
<year>2010</year>
<volume>25</volume>
<page-range>175-98</page-range></nlm-citation>
</ref>
<ref id="B31">
<label>31</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Miller]]></surname>
<given-names><![CDATA[JN]]></given-names>
</name>
<name>
<surname><![CDATA[Miller]]></surname>
<given-names><![CDATA[JC]]></given-names>
</name>
</person-group>
<source><![CDATA[Statistics and Chemometrics for Analytical Chemistry]]></source>
<year>2010</year>
<publisher-loc><![CDATA[London ]]></publisher-loc>
<publisher-name><![CDATA[Pearson Education Limited]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B32">
<label>32</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Aneta]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Andrzej]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Zuzana]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[ICP-OES Determination of select metals in surface water-a metrological study]]></article-title>
<source><![CDATA[Polish J Environ Stud]]></source>
<year>2010</year>
<volume>19</volume>
<page-range>59-64</page-range></nlm-citation>
</ref>
<ref id="B33">
<label>33</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ahmed]]></surname>
<given-names><![CDATA[MJ]]></given-names>
</name>
<name>
<surname><![CDATA[Roy]]></surname>
<given-names><![CDATA[UK]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A simple spectrophotometric method for the determination of iron(II) aqueous solutions]]></article-title>
<source><![CDATA[Turk J Chem]]></source>
<year>2009</year>
<page-range>709-26</page-range></nlm-citation>
</ref>
<ref id="B34">
<label>34</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gorica]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Trajce]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Katarina]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determination of iron in drinking water collectors]]></article-title>
<source><![CDATA[J Environment Sci and Health, Part A]]></source>
<year>2015</year>
<volume>50</volume>
<page-range>1385-92</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
