【摘要】 <正> 本文就渤海湾沉积物中总汞的分布特征、本底值及其污染状况等问题作一初步探讨。 一、材料及方法 1978年6月(枯水期)、9月(丰水期)两次在渤海湾40个测站用大样50型采泥器取表层样,为进一步了解汞自陆源入海后的扩散范围及污染过程,于1979—1980年在含汞较高的北更多还原

【Abstract】 121 samples of the surface sediments were taken from Bohai Bay in 1978-1980, their total mercury values ranged from 0.005 to 0.560 ppm, with an average value of 0.065 PPm. The higher levels (0.05 ppm) were in the west part of the Bay adjacent to the estuary of Beitang. The contents of mercury decreased rapidly with increasing distance from the estuary. The area of Bohai Bay polluted by mercury accounts for 5%.According to the data of 7 cores, the background of total mercury was confirmed to be 0. 05 ppm.更多还原