Measurement of Labile Cu, Pb and The

Measurement of Labile Cu, Pb and Their Complexation Capa-city in Yueqing Bay in Zhejiang Province, China

The complexation capacity of Cu and Pb and their labile and organic contents were determined separately for surface seawater samples from Yueqing Bay. The samples were prepared using Nuclepore filtration method yielding ＜1.0μm, ＜0.4μm and ＜0.2μm particulate water samples. Our data indicated that the ＜0.2μm colloidal fraction is a major carrier for distribution of copper in seawater. Affinity of Cu to marine microparticles plays an important role in the process. Pb however, tends to be absorbed by ＞0.2μm particles. The complexation capacity of Pb with ＜0.2μm particulates was smaller than that with 0.2-1.0μm particulates, and averaged 11.5 and 23.0nmol/L respectively. The results suggested that colloidal particles were responsible for the distribution and concentration of Pb in seawater.

作 者： 王正方 呂海燕 傅和芳   作者單位： Second Institue of Oceanography, State Oceanography Administration, Hangzhou 310012, China  刊 名： 中國海洋湖沼學報(英文版)  ISTIC SCI 英文刊名： CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY  年，卷(期)： 2004 22(1)  分類號： P74  關鍵詞： colloidal particles   labile state   complexation capacity   trace metals   Yueqing Bay  

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