渤海湾砷的研究  

A STUDY ON ARSENIC IN BOHAI BAY

作　　者：李全生[1] 沈万仁[1] 马锡年[1] 

机构地区：[1]中国科学院海洋研究所

出　　处：《山东海洋学院学报》1984年第2期27-39,共13页

摘　　要：渤海湾是个半封闭型的海湾。它三面环陆，东临渤海，周围入湾的河流有滦河、蓟运河、永定新河、海河、独流碱河和黄河等。Observations of the arsenic in Bohai Bay were made during two cruises. Some Primary conclusions are as follows:1.The averages (1.79μg-1 and 2.04 μgl-1)of bissolved arsenic concentrations in the surface waters of Bohai Bay are higher than that in oceans, But their differences are not significant. The horizontal distribution has an obvious gradient with a decrease from the northwest of the bay forward the southeast. However, the vertical distribution is relatively uniform.2.The major factors affecting the variation of the arsenic, concentrations and their gradient of horizontal distribution are the inputs from Jiyun River, Yongdingxin River and Haihe River.3.The salinity ranges from 27 to 32‰, within almost the entire region of the bay during these two cruises. A good negative correlation exiss between dissolved arsenic concentrations and salinities in the surfaces water of the bay. This suggests that the behavior of dissolved arsenic in the bay is of conservative nature.4.The average of arsenic contents in the surface layer of sedi-ments are 13.8 ppm. This value is within the variation range of 5-15 ppm of arsenic contents in shales, and is close to the background value (10 ppm) of oceanic sediments.5.Rain and dust fall from the atmosphere are Probably a significant source of arsenic for this bay.

关 键 词：渤海湾 砷 海水化学 污染监测 悬浮物质 分布特征 

分 类 号：P734.21[天文地球—海洋化学]