CAJ | 학술논문

以南京北郊为例，测量分析了屋面径流中砷（As）、汞（Hg）、铅（Pb）、镉（Cd）和锌（Zn）5种元素的浓度、形态特征。结果表明：短时强降雨过程中这5种元素浓度在较大范围内无规则波动，且不同元素间浓度分布存在较大差异；Zn 与Pb 的平均浓度分别高于《地表水环境质量标准》（GB 3838—2002）的Ⅴ类和Ⅳ类标准限值，污染程度从大到小依次为 Zn ＞Pb ＞As ＞Hg ＞Cd。元素形态分析表明，径流中除 Hg 外其他4种元素主要以颗粒态形式存在，各元素颗粒态占总形态的平均分数分别为：As，64．5％；Hg，43．7％；Pb，76．5％；Cd，54．6％；Zn，54．3％。
이남경북교위례，측량분석료옥면경류중신（As）、홍（Hg）、연（Pb）、력（Cd）화자（Zn）5충원소적농도、형태특정。결과표명：단시강강우과정중저5충원소농도재교대범위내무규칙파동，차불동원소간농도분포존재교대차이；Zn 여Pb 적평균농도분별고우《지표수배경질량표준》（GB 3838—2002）적Ⅴ류화Ⅳ류표준한치，오염정도종대도소의차위 Zn ＞Pb ＞As ＞Hg ＞Cd。원소형태분석표명，경류중제 Hg 외기타4충원소주요이과립태형식존재，각원소과립태점총형태적평균분수분별위：As，64．5％；Hg，43．7％；Pb，76．5％；Cd，54．6％；Zn，54．3％。
In this study,the pollution characteristics of arsenic (As),mercury (Hg),lead (Pb),cadmium (Cd)and zinc (Zn)were determined for short-term roof runoff with condition of construction-fugitive-dust.Re-sults indicated that the concentration of elements varied to a high degree during the rainfall period,and it indica-ted big difference between different elements concentration.Based on both event mean concentrations and fluxes, it can be concluded that the elements pollution may be ranked as Zn >Pb >As >Hg >Cd.In terms of fractiona-tion,elements in the particulate phase dominated the runoff pollution;the mean fraction of elements in the partic-ulate phase to total phase was 64.5%,43.7%,76.5%,54.6% and 54.3%,respectively for As,Hg,Pb,Cd and Zn.