Compound-Specific Chlorine Isotope Analysis of Organochlorine Pesticides by Gas Chromatography-Negative Chemical Ionization Mass Spectrometry

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Compounds</td><td class="align_center">Sample-1 <i>δ</i><sup>37</sup>Cl′ (1<i>σ</i>, ‰)</td><td class="align_center">Sample-2 <i>δ</i><sup>37</sup>Cl′ (1<i>σ</i>, ‰)</td><td class="align_center">Sample-3 <i>δ</i><sup>37</sup>Cl′ (1<i>σ</i>, ‰)</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left"><i>α</i>-HCH</td><td class="align_center">4.45 ± 1.22</td><td class="align_center">4.54 ± 1.32</td><td class="align_center">—</td></tr><tr><td class="align_left"><i>p</i>, <i>p′</i>-DDE</td><td class="align_center">−6.77 ± 2.09</td><td class="align_center">—</td><td class="align_center">2.95 ± 1.70</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr><tr class="table-fn"><td><div>Note: the analytical concentration of samples was 0.50 mg L<sup>−1</sup> (diluted or concentrated). Results were acquired from five replicated injections. Compounds: <i>α</i>-hexachlorocyclohexane (<i>α</i>-HCH) and 2, 2-dichloro-1, 1-bis (4-chlorophenyl) ethylene (<i>p</i>, <i>p</i>′-DDE).<br/></div></td></tr></table>

<div>Results of groundwater samples.</div>

Journal of Analytical Methods in Chemistry

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Table 3

Table 3: Compound-Specific Chlorine Isotope Analysis of Organochlorine Pesticides by Gas Chromatography-Negative Chemical Ionization Mass Spectrometry 

Table 3 | Compound-Specific Chlorine Isotope Analysis of Organochlorine Pesticides by Gas Chromatography-Negative Chemical Ionization Mass Spectrometry 