BIOCHEMICAL STUDIES ON “SUB-MICROMETER PARTICLES\\" AT DAYA BAY I. STUDY ON CONCENTRATION,

• 作 者: 李丽 张正斌 王肇鼎 赵伟 彭云辉 黄洪辉 潘明祥
• 出 处: Chinese Journal of Oceanology and Limnology
• 发表日期: 2000年04期

This paper discusses the measured concentrations of trace metals in different size fractions at Daya Bay, and describes the features of distribution and variation of lead, copper and cadmium there. On average,16% of Pb,10% of Cu and 8% of Cd which previously would have been considered in the dissolved phase are actually associated with colloidal material. Thus, past studies overestimate the dissolved trace metal concentration. The correlation between the colloidal fraction and the so called dissolved fraction suggests the significant role of colloidal material in the biogeochemistry of trace metals.

This paper discusses the measured concentrations of trace metals in different size fractions at Daya Bay, and describes the features of distribution and variation of lead, copper and cadmium there. On average, 16% of Pb, 10% of Cu and 8% of Cd which previously would have been been considered in the dissolved phase are actually associated with colloidal material. Thus, past studies overestimate the dissolved trace metal concentration. The correlation between the colloidal fraction and the so called dissolved fraction suggests the significant role of colloidal material in the biogeochemistry of trace metals.