Mercury contamination in the Yatsushiro Sea, south-western Japan: Spatial variations of mercury in sediment

作者: Takashi Tomiyasu , Ayako Nagano , Norinobu Yonehara , Hayao Sakamoto , Rifardi

DOI: 10.1016/S0048-9697(00)00502-7

关键词: MERCUREContaminationEffluentEnvironmental scienceBayMinamata diseaseHydrologyMercury (element)PollutionGeologic Sediments

摘要: Mercury-contaminated effluent was discharged into Minamata Bay from a chemical plant over 20-year period until 1965 (from 1958 to 1959, River), causing disease. In an effort characterize the extent of contamination in Yatsushiro Sea, vertical and horizontal distributions mercury sediment were investigated. Sediment sampled at 62 locations southern part sea 4 6 March 1996. lower layers long cores sediment, total amount relatively uniform low concentration. We interpret these values represent background concentration absent anthropogenic influence. The value thus estimated for Sea 0.059 +/- 0.013 mg kg(-1) (mean S.D., n = 51). highest each sample ranged 0.086 3.46 (mean, 0.57 kg(-1)). higher obtained stations near River (the sources pollution). Concentrations decreased with distance source. An inspection profiles suggested that deposited had not been fixed but transported, despite 30 years having past since last discharge contaminated effluent. At nine stations, extractable inorganic organic concentrations determined differentially. Inorganic is predominant species comprising approximately 1% total.

参考文章(25)
JEROME O. NRIAGU, WOLFGANG C. PFEIFFER, OLAF MALM, CRISTINA M. MAGALHAES de SOUZA, GREGORY MIERLE, Mercury pollution in Brazil Nature. ,vol. 356, pp. 389- 389 ,(1992) , 10.1038/356389A0
Hirokatsu Akagi, Philippe Grandjean, Yukio Takizawa, Pal Weihe, Methylmercury dose estimation from umbilical cord concentrations in patients with Minamata disease. Environmental Research. ,vol. 77, pp. 98- 103 ,(1998) , 10.1006/ENRS.1997.3822
H. Akagi, O. Malm, F. J. P. Branches, Y. Kinjo, Y. Kashima, J. R. D. Guimaraes, R. B. Oliveira, K. Haraguchi, W. C. Pfeiffer, Y. Takizawa, H. Kato, Human exposure to mercury due to goldmining in the Tapajos River basin, Amazon, Brazil: Speciation of mercury in human hair, blood and urine Water Air and Soil Pollution. ,vol. 80, pp. 85- 94 ,(1995) , 10.1007/BF01189656
Bernard P. Boudreau, Mean mixed depth of sediments: The wherefore and the why Limnology and Oceanography. ,vol. 43, pp. 524- 526 ,(1998) , 10.4319/LO.1998.43.3.0524
Takashi TOMIYASU, Ayako NAGANO, Hayao SAKAMOTO, Norinobu YONEHARA, Differential Determination of Organic Mercury and Inorganic Mercury in Sediment, Soil and Aquatic Organisms by Cold-Vapor Atomic Absorption Spectrometry Analytical Sciences. ,vol. 12, pp. 477- 481 ,(1996) , 10.2116/ANALSCI.12.477
Kim Petersen, Erik Kristensen, Poul Bjerregaard, Influence of bioturbating animals on flux of cadmium into estuarine sediment Marine Environmental Research. ,vol. 45, pp. 403- 415 ,(1998) , 10.1016/S0141-1136(98)00102-0
Mikio Kumagai, Hajime Nishimura, Mercury distribution in seawater in Minamata Bay and the origin of particulate mercury Journal of the Oceanographical Society of Japan. ,vol. 34, pp. 50- 56 ,(1978) , 10.1007/BF02108658