【摘要】 根据1983-05、09和10月胶州湾水域调查资料,研究和分析胶州湾重金属Hg的水质、平面分布、垂直分布、季节变化以及来源。结果表明:Hg在胶州湾水体中的质量浓度范围为:0.009~0.740μg/L;在5月和9月,胶州湾整个湾内水域没有受到Hg的污染,而在湾外水域受到Hg的污染;10月份,在Hg质量浓度方面,胶州湾整个水域都受到Hg的污染,尤其在西南水域,Hg的污染非常严重,只有在胶州湾的湾口和湾外水域,没有受到Hg的污染。胶州湾Hg质量浓度来源于海流的输送和地表径流的直接输送。Hg质量浓度的表、底层水平分布以及垂直分布展示了Hg质量浓度的表、底层水平分布趋势是一致的,水体中Hg的表层质量浓度最高的在9月,底层质量浓度最高的在10月,而且表、底层的Hg质量浓度都没有季节的变化了。通过胶州湾Hg的时空分布,发现随着输入胶州湾水域的Hg质量浓度的降低和输入方式的改变,Hg质量浓度的季节变化也发生了改变。更多还原

【Abstract】 The water quality,horizontal and vertical distributions,seasonal changes and sources of heavy metal Hg in the water of the Jiaozhou Bay are studied based on the data from the surveys carried out in the bay in May,September and October in 1983.The results show that the Hg content ranges from 0.009μg/L to 0.740μg/L in the water of the bay.In May and September,no pollution of Hg was found in the water of the whole bay,except for the waters outside the bay where the water suffered from the pollution of Hg.In October,however,the water within the whole bay suffered from Hg pollution,especially in the southwestern waters of the bay where Hg pollution was very serious,with the exception that no pollution of Hg was found at the mouth of the bay and in the waters outside the bay.The Hg content in the bay sourced from the inputs of the ocean currents and the surface runoffs.The horizontal and vertical distributions of Hg contents in the surface and the bottom layers showed that the trends of the horizontal distributions of Hg contents both in the surface and in the bottom layers were consistent.The maximum content of Hg in the water occurred in September in the surface layer and in October in the bottom layer.There were no seasonal changes in Hg content both in the surface and in the bottom layers.But,it has been found from the spatial and temporal distributions of Hg in the Jiaozhou Bay that with the decreasing of the Hg content input into the Jiaozhou Bay and the changing in the input ways,the seasonal variations of Hg content would also occur.更多还原