摘要
为了了解广东沿海Ｐｂ含量水平的时空变化特点，１９８９－１９９７年，实施“南海贻贝观察”对广东沿海１２个地点牡蛎体Ｐｂ含量进行了连续监测。广东沿海牡蛎体Ｐｂ含量范围为 ０．２２ × １０－６～ ２．０６ × １０－６（湿重），总平均值为０．７７ × １０－６。牡蛎体Ｐｂ污染指数的范围和平均值分别为０．１１～１．０３和０．３９，总体上属轻污染水平。牡蛎体Ｐｂ含量的空间分布呈粤西海区≥珠江口海区＞粤东海区。广东沿海牡蛎Ｐｂ含量水平在１９８９－１９９３年间呈微弱下降趋势，１９９４年Ｐｂ含量明显升高，此后Ｐｂ含量基本持平。
In order to understand temporal-spatial variation characteristics of lead(Pb) concentration in Guangdong coastal waters, the 'South China Sea Mussel Watch' was carried out for continuous monitoring of lead(Pb) concentration in oyster Crassotrea rivularis Gould at 12 Sampling sites from 1989 to 1997. The Pb concentrations in the oyster samples ringed from 0.22 x 10-6 to 2.06 x 10-6 with an overall average of 0. 77 x 10-6. The Pb pollution indexes of the oyster Samples ranged from 0. 11 to 1 .03 with an overall average of 0. 39, indicating the slight pollution level of Pb along Guangdong coastal waters. The spatial distribution pattern of Pb in the oyster samples were found decline in the following order: the western Guangdong coast waters≥ the Pearl River estuary > the eastern Guangdong coast waters. The Pb concentration in the oyster samples showed a slight decreasing trend ho 1989 to 1993 following a significant increasing trend in 1994, and after 1994, it showed a relatively stable period with no significant difference of Pb levels.
出处
《水产学报》
CAS
CSCD
北大核心
2000年第6期527-532,共6页
Journal of Fisheries of China
基金
中国水产科学研究院"八五"项目!(91-7-1)
农业部渔业局重大渔业环境监测项目!(95-97-1)
