Species and distribution of inorganic selenium in the Bohai Sea

• Published in: Chinese journal of oceanology and limnology Vol. 24; no. 2; pp. 204 - 211
• Main Author: 姚庆祯 张经
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer-Verlag 01.06.2006; Springer Nature B.V; State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China; Fisheries College, Fisheries University of Shanghai, Shanghai 200090, China%State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266003, China
• Subjects: Brackish; Cruises; Freshwater; Geographical distribution; Marine; Rivers; Selenite; Selenites; Selenium; Water masses; Yellow Sea; 无机物; 海洋化学; 生物物种; Yellow Sea; INW, Huanghai Sea; China, People's Rep., Huang He R; INW, Bohai Sea; inorganic selenium; distribution; species; Bohai Sea
• ISSN: 0254-4059; 2096-5508; 1993-5005; 2523-3521
• DOI: 10.1007/BF02842820

For studying geochemical behavior of selenium, a marine investigation was conducted in September 1998 cruise in the Bohai Sea. Horizontal and vertical distributions of inorganic selenium and selenite were studied. The inorganic selenium varied from 0.73 to 2.41 nmol/L, with an average of 1.31 nmol/L; while selenite varied from 0.18 to 0.72 nmol/L with an average of 0.47 nmol/L. The average ratio of selenite to selenate was 0.68, and selenate was the predominant species of inorganic selenium in the most study area. Concentrations of inorganic selenium and selenite decreased with distance from the coast. No apparent variations of the concentration between surface and bottom was shown. There were two wa- ter masses in the area, one from the Huanghe （Yellow） River and other from the Yellow Sea. Of the two, Huanghe River was the major source of inorganic selenium.