福建紫泥岛海域溶解态铜、铅、镉的分布行为

DISTRIBUTIONS AND BEHAVIOUR OF DISSOLVED COPPER,LEAD AND CADMIUM IN THE ZINI ISLAND WATERS,FUJIAN PROVINCE

研究了1990年6月和11月福建九龙江口素泥岛海域表层水中溶解态Cu、Pb、Cd的分布行为.结果表明,Cu、Cd均呈添加行为,Pb 6月基本呈除去行为,而11月呈添加行为.Cd的添加源自有机质分解再生和或颗粒的释放(由于形成可溶性镉-氯络合物).6月Cu和11月Cu、Pb的添加分别源自有机质分解再生和再悬浮沉积物的释放.6月Cu分布与无机氮再生循环关系密切.

The distribution and behaviour of dissolved Cu, Pb and Cd in the surface water of the Zini Island waters (Jiulong River Estuary), Fujian have been studied in June and November, 1990. The results indicated that Cu and Cd appeared additional behaviour, whereas Pb in June and November appeared generally removal and additional behaviour, respectively. Cd addition comes from regeneration from organic matter degradation and/or release from particles (owing to the formation of soluble Cd-chloro complexes), whereas Cu in June and Cu and Pb in November corne from the same regeneration and release from the resuspended sediment, respectively. The contribution of Cu in June relates closely to the regeneration cycle of inorganic nitrogen.