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湖泊科学  2011 

太湖沉积物中镉的赋存形态及其与河蚬体内富集的关系

DOI: 10.18307/2011.0302

Keywords: 沉积物,河蚬,Cd,薄膜扩散梯度技术,BCR,太湖

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Abstract:

通过实验室模拟的方法,将河蚬暴露于镉(Cd)污染太湖沉积物中,研究河蚬软体组织中Cd富集量及其水环境中Cd的分布规律.同时采用薄膜扩散梯度技术(DGT)和BCR形态分析法分别测定沉积物中Cd的有效形态和释放规律.以获得三种方法预测沉积物基准方法的适用性.结果表明,随着加标浓度增大,DGT和BCR测得Cd浓度值增高,上覆水中Cd含量增加,河蚬体内Cd富集量增多.暴露14d和28d后,DGT及BCR两种方法获得的有效态浓度值与河蚬软体组织Cd富集均显著相关,为沉积物质量基准预测提供参考依据.

References

[1]  M. Schintu ;L. Durante ;A. Maccioni ;P. Meloni ;S. Degetto ;A. Contu,Measurement of environmental trace-metal levels in Mediterranean coastal areas with transplanted mussels and DGT techniques,Marine Pollution Bulletin?,2008, 57(6/12).
[2]  Davison W;Zhang H,In situ speciation measurements of trace components in natural waters using thin-film gels,Nature,1994.
[3]  马陶武;朱程;王桂岩,铜锈环棱螺对沉积物中重金属的生物积累及其与重金属赋存形态的关系,应用生态学报,2010(03).
[4]  Le Claire JP;Chang AC;Levesqe CS,Trace metal chemistry in arid field soil amended with sewage sludge,SoU Science Society,1984.
[5]  ANNA CHLOPECKA ;DOMY C. ADRIANO,Mimicked In-Situ Stabilization of Metals in a Cropped Soil: Bioavailability and Chemical Form of Zinc,Environmental Science & Technology?,1996, 30(11).
[6]  王海;王春霞;王子健,太湖表层沉积物中重金属的形态分析,环境化学,2002(05).
[7]  Michael P. Harper ;William Davison ;Hao Zhang ;Wlodek Tych,Kinetics of metal exchange between solids and solutions in sediments and soils interpreted from DGT measured fluxes,Geochimica et Cosmochimica Acta?,1998, 62(16).
[8]  Zhang H;Davison W;Miller S,In situ high resolution measurement of fluxes of Ni,Cu,Fe,and Mn and concentrations of Zn and Cd in pore waters by DGT,Geochintica et Cosmochimica Acta,1995.
[9]  Marina C;Alessandro C,Measuring bioavailable trace metals from freshwater sediments by diffusive gradients in thin films(DGT) in monitoring procedures for quality assessment,Annali di Chimica,2006.
[10]  韩明辅;贾树林;同启仑,菲律宾蛤仔对cd加标沉积物的蓄积实验,海洋环境科学,1999(03).
[11]  Ure AM;Quevauvillier Ph;Munlau H,Speciation of heavy metals in soils and sediments.An account of the improvement and harmonization of extraction techniques undertaken under the auspices of the BCR of the commission of the European Communities,International Journal of Environment Analytical Chemistry,1993.
[12]  Warnken KW;Zhang H;Davison W Accuracy of the diffusive gradients in thin-films technique;Diffusive boundary layer and effective sampling area considerations [J] 2006 doi:10.1021/ac060139d
[13]  U.S.Environmental Protection Agency,Methods for measuring the toxicity and bioaccumulation of sediment-associated contaminants with freshwater invertebrates (2nd ed),Washington DC; Office of Science and Technology,1993.
[14]  刘恩峰;沈吉;朱育新,重金属元素BCR提取法及在太湖沉积物研究中的应用,环境科学研究,2005(02).
[15]  J. Angus Webb ;Michael J. Keough,Measurement of environmental trace-metal levels with transplanted mussels and diffusive gradients in thin films(DGT): a comparison of techniques,Marine Pollution Bulletin?,2002, 44(3).
[16]  Tian Y;Wang XY;Luo J,Evaluation of holistic approaches to predicting the concentrations of metals in field-cultivated rice,Environmental Science and Technology,2008.
[17]  陈云增;杨浩;张振克,淡水沉积物环境质量基准差异分析,湖泊科学,2005(03).

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