HCHs and DDTs in Soils around Guanting Reservoir in Beijing, China: Spatial-Temporal Variation and Countermeasures

<div class="floats-full-page floats-full-page-other"><h2>Table 2</h2><div class="floats-full-page-caption">Composition of HCH and DDT in soil samples in 2003, 2007, and 2009.</div><div class="floats-full-page-content"><table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="6"><hr /></td></tr><tr class="thead"><td align="left">Ratio</td><td align="center">Year</td><td align="center">Average</td><td align="center">Minimum</td><td align="center">Maximum</td><td align="center">Percentage of sites with a ratio less than 1</td></tr><tr><td class="thead-hr" colspan="6"><hr /></td></tr><tr><td align="left" rowspan="3"><svg height="7.9499998" id="M8" style="vertical-align:-0.1638pt" version="1.1" viewbox="0 0 9.7749996 7.9499998" width="9.7749996" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,7.675)"><path d="M545 106q-67 -118 -134 -118q-24 0 -40 37.5t-30 129.5h-2q-47 -72 -103 -119.5t-108 -47.5q-47 0 -76 45.5t-29 119.5q0 113 85 204t174 91q47 0 70 -33.5t43 -119.5h3q32 47 80 140l55 13l10 -9q-47 -80 -138 -201q17 -99 27.5 -136t22.5 -37q23 0 69 61zM333 204&#10;q-14 98 -31 149.5t-50 51.5q-49 0 -94 -70t-45 -164q0 -55 15.5 -86t40.5 -31q70 0 164 150z" id="x1D6FC"></path></g>
</svg>-HCH/<i>γ</i>-HCH</td><td align="center">2003</td><td align="center">1.35</td><td align="center">0.25</td><td align="center">3.35</td><td align="center">8.9%</td></tr><tr><td align="center">2007</td><td align="center">0.42</td><td align="center">0.12</td><td align="center">0.73</td><td align="center">15.0%</td></tr><tr><td align="center">2009</td><td align="center">2.76</td><td align="center">2.25</td><td align="center">3.26</td><td align="center">0</td></tr><tr><td align="left" colspan="6"><hr /></td></tr><tr><td align="left" rowspan="3">(DDE + DDD)/p,<svg height="21.7875" id="M9" style="vertical-align:-3.27599pt" version="1.1" viewbox="0 0 13.1875 21.7875" width="13.1875" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,17.65)"><path d="M169 380l92 53q26 16 49 16q80 0 128.5 -56t48.5 -133q0 -108 -72.5 -180.5t-176.5 -91.5q-38 1 -69 18v-131q0 -57 13 -70t71 -18v-27h-236v27q49 5 61 17t12 61v452q0 48 -9.5 58.5t-56.5 16.5v24q66 11 145 43v-79zM169 346v-270q37 -39 94 -39q63 0 101.5 50&#10;t38.5 134q0 78 -38.5 123t-95.5 45q-45 0 -100 -43z" id="x70"></path></g>
<g transform="matrix(.012,-0,0,-.012,8.975,9.488)"><path d="M227 744l-123 -338l-31 15l73 368q12 3 41.5 -8t36.5 -20z" id="x2032"></path></g>
</svg>-DDT</td><td align="center">2003</td><td align="center">2.52</td><td align="center">0.24</td><td align="center">25.2</td><td align="center">23.2%</td></tr><tr><td align="center">2007</td><td align="center">1.25</td><td align="center">0.09</td><td align="center">4.22</td><td align="center">41.7%</td></tr><tr><td align="center">2009</td><td align="center">7.07</td><td align="center">0.24</td><td align="center">40.1</td><td align="center">8.2%</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr" /></td></tr></table></td></tr></table></div></div>

Table 2 | HCHs and DDTs in Soils around Guanting Reservoir in Beijing, China: Spatial-Temporal Variation and Countermeasures

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Table 2: HCHs and DDTs in Soils around Guanting Reservoir in Beijing, China: Spatial-Temporal Variation and Countermeasures

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Table 2

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