The paper aims to master the pollution levels of heavy metals in the Yangtze River Basin. The authors selected Anhui and Jiangsu sections in the Yangtze River as sampling points, and collected 16 water samples in June 2016 to determine the contents of 6 heavy metals. The heavy metal contents in the water samples were determined by atomic absorption spectrophotometer. The results showed that: there were no residual Cd in the collected water samples, and the other heavy metals had varying degrees of residues; the residual mean value of Cr, Pb, Cu, Hg and As was 4.276, 1.866, 5.762, 0.016, 1.421 μg/L, respectively; as a whole, higher levels of heavy metals were found in Anqing and Jingjiang, followed by Nanjing and Tongling, while the pollution in Wuhu was the minimal; the Cr pollution in Jingjiang, Anqing and the Hg pollution in Tongling Site 1 reached tertiary level; secondary pollution area was mainly with Cu, Pb level in Tongling Site 1 also reached secondary pollution level, while the otherelements’ pollution was insignificant. This study provides a basis for the effective control of heavy metal pollution in the lower reaches of the Yangtze River, and the realization of scientific management of water environment health risk, and has technical data support for quality and safety assessment of aquatic products.
Key words
Yangtze River Basin; heavy metal; water environment; evaluation and analysis; risk assessment
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References
[1] YUAN X Z,LIU H,LU J J.The ecological and environmental characteristics and conservation of the wetlands in the Changjiang Estuary,China[J].The environmentalist,2002,22:311-318
[2] 陈有明,刘同庆,黄燕,等.长江流域湿地现状与变化遥感研究[J].长江流域资源与环境,2014,23(6):801-808.
[3] 蒋冲,王德旺,罗上华,等.三江源区生态系统状况变化及其成因[J].环境科学研究,2017,30(1):10-19.
[4] 封志明,杨艳昭,游珍.中国人口分布的水资源限制性与限制度研究[J].自然资源学报,2014,29(10):1637-1648.
[5] 何焰.上海市水环境生态安全与评价研究[D].上海:华东师范大学,2004
[6] 李雪松.东北亚区域环境跨界污染的合作治理研究[D].长春:吉林大学,2014
[7] 周淑婷,罗莹华,胡金妹,等.韶关北江河水质重金属污染调查与评价[J].安徽农业科学,2015,43(3):277-279.
[8] 楼蔓藤,秦俊法,李增禧,等.中国铅污染的调查研究[J].广东微量元素科学,2012,19(10):15-34
[9] 国家环境保护总局.GB 3838—2002 地表水环境质量标准[S].中国标准出版社,2002
[10] 宋超,张聪,孟顺龙,等.长江下游流域铜锈环棱螺体内重金属含量及风险评估[J].中国渔业质量与标准,2016,6(4):7-11.
[11] 李名升,张建辉,梁念等.常用水环境质量评价方法分析与比较[J].地理科学进展,2012,31(5):617-624.
[12] Guo J, Li Z. Artificial neural network modeling of water quality of the Yangtze River system: A case study in reaches crossing the city of Chongqing[J]. Journal of Chongqing University, 2009, 8(1): 1-9.
[13] 杨旭,曾祥亮.基于单子评价法和污染指数法的郑州大学眉湖水质评价[J].江苏科技信息,2014,(5):51-55
[14] 张胜帮,胡柏禧.ICP-AES-内梅罗指数法研究皮革工业区蔬菜中的重金属污染[J].食品科学,2015,36(4):221-225.
[15] 翟敏,王连顺.用单因子和综合指数法评价农村小型集中式供水水质[J].环境与职业医学,2010,27(7) :432-434.
[16] 谢萍,尹航.靖江市十圩港、横港底质重金属污染现状调查及防治对策[J].绿色科学,2015,(11):214-216.
[17] 魏伟,王丽,周平,等.安徽铜陵地区河流生态系统健康的多指标评价[J].中国环境科学,2013,33(4):691-699.
[18] 方文稳,张丽,王鹏,等.安庆市降尘重金属的污染评价与健康风险评价[J].中国环境科学,2015,35(12):3795-3803.
[19] 钟国雄,周涛发,袁峰,等.安徽铜陵姚家岭锌金多金属矿床成岩成矿年代学研究[J].岩石学报,2014,30(4):1075-1086.
[20] 徐彬,灿尧,毛新伟,等.内梅罗水污染指数法在太湖水质评价中的适用性分析[J].水资源保护2014,30(2):38-40.
[21] 陈校辉,沈敏,于红霞.长江江苏段沉积物中重金属与底栖动物调查及生态风险评价[N].农业环境科学学报,2006,25(6):1616-1619.
[22]周启艳,李国葱,唐植成.我国水体重金属污染现状与治理方法研究[J].轻工科技,2013,4:98-99.
[23]刘晓辉,王永,董文平,等.流域尺度水环境污染风险评估[J].科技导报,2016,34(7):134-138
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