| 连云港近岸海域表层沉积物中重金属的赋存形态 |
| Speciations of Heavy Metals in the Surface Sediments from Lianyungang Sea Area |
| 投稿时间：2010-05-12 修订日期：2010-05-26 |
| DOI： |
| 中文关键词:连云港近岸海域 表层沉积物 重金属 化学形态 生物活性 |
| 英文关键词:Offshore area of Lianyungang Surface sediments Heavy metal Chemical species Availability |
| 基金项目:江苏省海洋生物技术重点建设实验室开放课题（２００７ＨＳ０１８）和国家自然科学基金项目（４０９０６０５４）共同资助。 |
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| 中文摘要: |
| 对连云港近岸海域６个表层沉积物样品中重金属（Ｃｕ、Ｚｎ、Ｃｒ、Ｎｉ、Ｐｂ和Ｃｄ）的含量及赋存形态进行分析。结果表明：该海域表层沉积物中重金属Ｐｂ的浓度水平超出国家海洋一类沉积物质量评价标准，其余重金属的浓度达到海洋一类沉积物质量标准。采用Ｔｅｓｓｉｅｒ连续提取法发现，连云港近岸海域表层沉积物中重金属各形态的分布存在很大的差别，重金属Ｃｕ以有机态为主要赋存形态，Ｃｒ和Ｎｉ以残渣态为主要赋存形态，Ｐｂ主要以铁锰氧化物态为主，重金属Ｃｄ以可交换态为主，Ｚｎ主要以非残渣态为主。以生物有效性和迁移性来综合评价重金属的生物活性，发现该海域Ｃｄ的生物活性和迁移性最大。 |
| 英文摘要: |
| Concentrations and speciations of heavy metals(Cu，Zn，Cr, Ni，Pb and Cd ) of sediments from offshore area of Lianyungang were investigated. The results showed that the total concentrations of Pb exceeded assessing criteria for the quantity of sediment and other elements were in the assessing criteria for the quantity. A sequential extraction procedure was employed to find there were significant diferences in occurrence in surface sedinents from offshore area of Lianyungang. The major form of Cu was orfanics-sulphides fraction, ant the most form of Cr and Ni was residual fraction，and pb was in Fe-Mn oxides, and Zn was non-residual fraction, while the major forms of Cd were exchangeable ions fractions. The availabilities and mobilities of heavy metals were of availability and mobility of sediments.
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| 李玉,冯志华,李谷祺.2010.连云港近岸海域表层沉积物中重金属的赋存形态[J].水生态学杂志,31(5):141-144. |
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