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引用本文:赵艳民,张雷,王丽婧,秦延文,郑丙辉,马迎群,迟明慧,刘志超,杨晨晨,李利强.基于筛分水平浓度法的洞庭湖沉积物质量基准初步分析.湖泊科学,2017,29(1):78-86. DOI:10.18307/2017.0109
ZHAO Yanmin,ZHANG Lei,WANG Lijing,QIN Yanwen,ZHENG Binghui,MA Yingqun,CHI Minghui,LIU Zhichao,YANG Chenchen,LI Liqiang.Sediment quality criteria for heavy metals in Lake Dongting based on screening level concentration approach. J. Lake Sci.2017,29(1):78-86. DOI:10.18307/2017.0109
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基于筛分水平浓度法的洞庭湖沉积物质量基准初步分析
赵艳民1, 张雷1, 王丽婧1, 秦延文1, 郑丙辉1, 马迎群1, 迟明慧1, 刘志超1, 杨晨晨1, 李利强2
1.中国环境科学研究院环境基准与风险评估国家重点实验室, 北京 100012;2.洞庭湖生态环境监测中心, 岳阳 414000
摘要:
基于2013-2015年调查获取的129个洞庭湖表层沉积物和底栖生物的调查数据,应用筛分水平浓度法初步探讨了洞庭湖沉积物几种重金属沉积物质量基准的推荐值.结果表明,洞庭湖沉积物砷(As)、镉(Cd)、铬(Cr)、铜(Cu)、铅(Pb)和锌(Zn)含量均值为17.2、2.63、56.9、32.4、38.4和96.3 mg/kg (DW);筛分水平浓度法获取的洞庭湖沉积物As、Cd、Cr、Cu、Pb和Zn质量基准分别为11.97、1.13、42.03、19.17、23.63和67.54 mg/kg (DW).通过与不同国家及地区指定的重金属质量基准推荐值以及本地区采用其他方法推导的重金属基准推荐值进行比较,推算出本研究获取的6种重金属沉积物质量基准推荐值接近所有数据的中间值.对于洞庭湖流域,不同方法获取的沉积物重金属质量基准具有可比性.然而,鉴于用于推导沉积物质量基准的数据采集涉及的区域较为有限,且除了重金属污染外,影响底栖生物分布的因素较为复杂,导致获取的沉积物重金属质量基准推荐值存在一定的不确定性.
关键词:  洞庭湖  重金属  沉积物质量基准  筛分水平浓度法
DOI:10.18307/2017.0109
分类号:
基金项目:国家重点基础研究发展计划项目(2012CB417004)和国务院三峡办洞庭湖江湖生态监测项目(JJ[2015]-002)联合资助.
Sediment quality criteria for heavy metals in Lake Dongting based on screening level concentration approach
ZHAO Yanmin1, ZHANG Lei1, WANG Lijing1, QIN Yanwen1, ZHENG Binghui1, MA Yingqun1, CHI Minghui1, LIU Zhichao1, YANG Chenchen1, LI Liqiang2
1.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, P. R. China;2.Dongting Lake Eco-Environment Monitoring Centre, Yueyang 414000, P. R. China
Abstract:
129 surface sediment samples and the co-occurrence macrozoobenthos samples were collected from Lake Dongting during 2013-2015. Concentrations of six kinds of heavy metal-arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), lead (Pb) and zinc (Zn) in the sediment were measured and the species composition of macrozoobenthos was identified. The results showed that the average concentrations of As, Cd, Cr, Cu, Pb and Zn were 17.2, 2.63, 56.9, 32.4, 38.4 and 96.3 mg/kg (DW), respectively. Based on the field data on the co-occurrence of sediments and macrozoobenthos and the concentrations of heavy metal, the screening level concentration (SLC) approach was induced to preliminarily explore the sediment quality criteria (SQC) recommended values of heavy metal for surface sediments from Lake Dongting. The calculated SQCs of As, Cd, Cr, Cu, Pb and Zn of Lake Dongting were 11.97, 1.13, 42.03, 19.17, 23.63 and 67.54 mg/kg (DW), respectively. These SQC values were compared with those of different countries and regions. It was found that SQCs obtained in this study were close to the median values of the reference data. The SQCs of heavy metal in Lake Dongting came from different derivation methods were comparative. However, there is still some uncertainty when applied the values of SQC derived from screen level concentration approach. One reason responsible for the uncertainty of the SQCs is that the field data used to derive SQCs is limited. In addition of heavy metal pollution, many other factors can affect the distribution of macrozoobenthos, which will lead to relatively biased in the values of SQCs.
Key words:  Lake Dongting  heavy metal  sediment quality criteria  screening level concentration approach
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