CAJ | 학술논문

分析了万峰湖水体和沉积物中汞的污染现状以及汞含量分布状况，分别采用单因子污染指数法表征了水体中汞污染程度，地累积指数法和潜在生态危害指数法评价了沉积物中汞污染程度和潜在生态风险。结果表明，11个采样点水中汞含量为ND~0.034μg/L，平均值0.014μg/L，均符合国家地表水质量Ⅲ类标准；沉积物中汞含量为0.039~0.358 mg/kg，平均值0.169 mg/kg。从三江口—红村码头水和沉积物中汞含量均呈现波状起伏分布，分布趋势较一致。单因子评价法显示研究区水体中无汞污染，地累积指数法和潜在生态危害指数法显示所测样点沉积物中有82%无汞污染，45%生态风险很低。
분석료만봉호수체화침적물중홍적오염현상이급홍함량분포상황，분별채용단인자오염지수법표정료수체중홍오염정도，지루적지수법화잠재생태위해지수법평개료침적물중홍오염정도화잠재생태풍험。결과표명，11개채양점수중홍함량위ND~0.034μg/L，평균치0.014μg/L，균부합국가지표수질량Ⅲ류표준；침적물중홍함량위0.039~0.358 mg/kg，평균치0.169 mg/kg。종삼강구—홍촌마두수화침적물중홍함량균정현파상기복분포，분포추세교일치。단인자평개법현시연구구수체중무홍오염，지루적지수법화잠재생태위해지수법현시소측양점침적물중유82%무홍오염，45%생태풍험흔저。
pollution status and spatial distribution of mercury in the water and sediment at the Wan-feng Lake were analyzed in this paper. The single-factor index method was adopted to evaluate the mercury pollution degree in water ,and the geo-accumulation index and the potential ecological risk index were applied to assess the pollution degree and the ecological risk of mercury in sediments. The results showed that,in 11 sampling spots,mercury in water ranged from ND-0. 034μg·L-1 and the average content was 0 . 014 μg · L-1 which conformed to the national surface water quality Ⅲclass standard. Mercury in sediments ranged from 0. 039-0. 358 mg·kg-1 and the average content was 0. 169 mg·kg-1 . Along the sampling route,from Sanjiankou to Hongcun Dock,mercury con-tent in water had the same distribution trend with that of in sediment. The single-factor index meth-od showed that the level of mercury in water of Wanfeng Lake was very low ,and the geo-accumula-tion index and the potential ecological risk index showed that in sediments,mercury pollution was not found in 82% of surveyed sediments,and ecological risk in 45% was in a low level.