| 摘要: |
| 对连云港海域临洪河口水体中重金属元素Cu, Zn, Pb, Cd 的主要存在形态及悬浮颗粒态重金属元素的赋存形态进行了分析。结果表明: 悬浮态重金属Cu, Zn, Pb, Cd 的含量在调查海域内空间分布基本均衡, Zn、Cu、Cd 主要以溶解态形式存在, 而Pb 则主要以颗粒态形式存在。对悬浮态重金属元素的赋存形态分析表明, Cu 主要富集在有机-硫化物态、Zn 主要富集在残渣态、Pb 主要富集在铁锰氧化物态和碳酸盐结合态、Cd 主要富集在可交换态和碳酸盐结合态。 |
| 关键词: 水体 重金属 悬浮颗粒物 化学形态 分布 连云港海域 临洪河口 |
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| 基金项目:淮海工学院校内基金(Z2006035); 江苏省海洋生物技术重点建设实验室开放课题(2007HS018); 国家自然科学基金项目(40906054)共同资助 |
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| The distributive characteristics of chemical forms of heavy metals in water in Linhong river Mouth in Lianyungang sea area |
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LI Yu,LI Gu-qi,FENG Zhi-hua
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| Abstract: |
| The distribution and accumulation of Cu, Zn, Cd and Pb in dissolved, suspended phases and chemical forms in sea water in Linhong river Mouth in Lianyungang sea area were investigated．The results show that the levels of suspended matter (SPM) heavy metals were in proportion in this study. In Linhong river Mouth, the dissolved form of Zn, Cu, Cd was dominant, while Pb was mainly in SPM. The major form of Cu is organics-sulphides fraction, Pb in Fe-Mn oxides and carbonates fractions, and the major forms of Cd were in exchangeable ions and carbonates fractions. Zn was mainly in form of residual fraction. |
| Key words: seawater heavy metal suspended matter chemical species Lianyungang Linhong river Mouth |
