摘要
于2006-05-07采用同站位多介质同时采样的方法获得了表层沉积物样20件,底层水20件,沉积物间隙水17件,生物样27件,系统分析了各介质中痕量金属浓度的分布特征、相关关系及生物体对痕量金属的富集状况。对于不同介质来说,表层沉积物中痕量金属浓度最高,生物体和间隙水次之,底层水最低;然而与各介质的国家标准相比较,沉积物中痕量金属浓度基本无超标,底层水中痕量金属Cu,Pb,Zn的平均浓度大大超过国家海水水质一级标准,生物体中痕量金属Zn和Cu在各类生物体内的平均浓度远远超过国家海洋生物质量一级标准,根据澳大利亚国家卫生和医学研究理事会制定的人体消费卫生标准,As和Cd的浓度则严重超过人体消费标准;各类生物对痕量金属的富集系数均大于20,最高可达10 000以上;相关分析表明,沉积物、底层水及间隙水之间均存在正相关关系(R>0.6),生物体中多数痕量金属与其它介质中痕量金属的相关性不明显,仅元素Cu和Pb与沉积物中的Cu和Pb有相关性(R分别为0.547和-0.523,P值均小于0.05)。
Concentrations of trace metals including 20 sediments, 20 bottom water, 17 pore water and 27 organisms samples from 20 sampling stations were determined in Hebei offshore during the period of May- July, 2006. Sediments recorded the highest concentrations of trace metals, marine organisms did the high- er one and the lowest concentrations did. The concentrations of the trace metals in the sediments were gen- erally lower than the first level of marine sediment quality standard, while the average concentrations of Cu, Pb and Zn in bottom water were far in excess of the first level of the sea water quality standard, and the average concentrations of Cu and Zn in organisms were far in excess of the first level of the marine sea- food quality standard. Moreover the average concentrations of As and Cd exceeded the human consumption standard of Australia sanitary and medical research council. The concentration factors （C. F. ） of trace metals were in the range of 20~10 000. The sediments, bottom waters and pore waters showed a similar spatial distribution patterns for the concentrations of various metals （R〉0. 6, P〈0. 05）. There was cor- relation （R=0.547 and R=-0. 523, P〈0.05） between the concentrations in the organisms, sediments for trace metal Cu and Pb.
出处
《海洋科学进展》
CAS
CSCD
北大核心
2012年第4期519-526,共8页
Advances in Marine Science
基金
国家自然科学基金项目--典型河口沉积物痕量金属形态与沉积物二次污染机理(40872167)
国土资源部公益性行业科研专项--滨海湿地生态系统的固碳能力探测与评价(201111023)
国土资源部海洋油气资源和环境地质重点实验室开放基金项目--河北省近岸海域水生系统各介质(沉积物
水
生物)重金属污染及生态效应评价(MRE200920)
国土资源部地质调查项目--黄河三角洲滨海湿地生态系统综合地质调查与评价(1212010611402)
