CAJ | 학술논문

为评估降雨路面径流汞（ Hg）污染状况，对南京绕城高速公路马群段11场降雨路面径流进行了监测，分析了汞（ Hg）的事件平均浓度（ EMC）以及降雨特性对径流中Hg污染的影响．结果表明，不同赋存状态的Hg的污染程度均较为严重，总Hg（THg）、溶解态汞（HgD）和颗粒态汞（HgP）含量分别为0．173～3．347，0．069～0．862和0．104～2．485μg/L．THg的EMC超过了中国《地表水环境质量标准（GB 3838-2002）》中5类水的限值．雨水径流中Hg主要以颗粒态存在，络合态Hg（Hgre，0．250～2．821μg/L）的含量远大于挥发性Hg（Hg0，0．023～0．215μg/L）和活性Hg（Hg2＋，0．026～0．359μg/L）．各种降雨特性对径流中Hg污染的影响顺序为前期晴天数＞径流时间＞降雨历时＞降雨强度＞降雨量．
위평고강우로면경류홍（ Hg）오염상황，대남경요성고속공로마군단11장강우로면경류진행료감측，분석료홍（ Hg）적사건평균농도（ EMC）이급강우특성대경류중Hg오염적영향．결과표명，불동부존상태적Hg적오염정도균교위엄중，총Hg（THg）、용해태홍（HgD）화과립태홍（HgP）함량분별위0．173～3．347，0．069～0．862화0．104～2．485μg/L．THg적EMC초과료중국《지표수배경질량표준（GB 3838-2002）》중5류수적한치．우수경류중Hg주요이과립태존재，락합태Hg（Hgre，0．250～2．821μg/L）적함량원대우휘발성Hg（Hg0，0．023～0．215μg/L）화활성Hg（Hg2＋，0．026～0．359μg/L）．각충강우특성대경류중Hg오염적영향순서위전기청천수＞경류시간＞강우력시＞강우강도＞강우량．
In order to assess the mercury Hg pollution in urban stormwater runoff in Nanjing 11 rainfall events in the Maqun region of Nanjing circle expressway were monitored and the events mean concentrations EMC of Hg and the impact of rainfall characteristics on Hg pollution in runoff were analyzed.Results show that the pollution of different Hg species is serious and total Hg THg dissolved Hg HgD and particulate Hg HgP are found to be in the range of 0.173 to 3.347 0.069 to 0.862 and 0.104 to 2.485μg/L respectively.The average EMC value of THg exceeds the Ⅴ class limitation value of Quality standards of surface water environment GB 3838-2002 of China. Hg in runoff mainly exists in particulate form and the concentrations of Hgre 0.250 to 2.821 μg/L are far more than those of Hg0 0.023 to 0.215 μg/L and Hg2+ 0.026 to 0.359 μg/L . The order of rainfall characteristics impacting on Hg pollution in runoff is dry periods >runoff time>duration of rainfall>storm intensity>rainfall.