The production of dissolved gaseous mercury from methylmercury photodegradation at different salinity

作者: Moon-Kyung Kim , A-Young Won , Kyung-Duk Zoh

DOI: 10.1080/19443994.2014.986829

关键词:

摘要: AbstractPhotodegradation of methylmercury (MeHg) is an important process in mercury cycling that maintains low concentrations MeHg freshwater lakes; however, less known about importance this marine waters. The photo-induced formation dissolved gaseous (DGM, Hg0) from removal was investigated. This study examined the effect various environmental factors (i.e. light wavelength and intensity, concentration), primary water constituents on abiotic photodegradation MeHg, especially under different salinity. rates were positively correlated with UV implying attenuation radiation had a significant photodegradation. However, high organic matters concentration salinity inhibited DGM always produced during MeHg. Photodegradation production decreased increasing salinity, suggesting p...

参考文章(43)
H. H. M. Paraquetti, L. D. Lacerda, G. A. Ayres, M. D. Almeida, S. Mounier, MERCURY SPECIATION AND DISSOLVED ORGANIC CARBON CHARACTERIZATION IN THE SURFACE WATERS OF SEPETIBA BAY, SE BRAZIL Geochimica Brasiliensis. ,vol. 18, ,(2004) , 10.21715/GB.V18I1.208
S.E. Lindberg, A.F. Vette, C. Miles, F. Schaedlich, Mercury speciation in natural waters: Measurement of dissolved gaseous mercury with a field analyzer Biogeochemistry. ,vol. 48, pp. 237- 259 ,(2000) , 10.1023/A:1006228612872
Hiroshi Ogawa, Eiichiro Tanoue, Dissolved Organic Matter in Oceanic Waters Journal of Oceanography. ,vol. 59, pp. 129- 147 ,(2003) , 10.1023/A:1025528919771
Yu-Ping Chin, Penney L. Miller, Lingke Zeng, Kaelin Cawley, Linda K. Weavers, Photosensitized degradation of bisphenol A by dissolved organic matter. Environmental Science & Technology. ,vol. 38, pp. 5888- 5894 ,(2004) , 10.1021/ES0496569
Janick D. Lalonde, Marc Amyot, Anne M. L. Kraepiel, François M. M. Morel, Photooxidation of Hg(0) in artificial and natural waters. Environmental Science & Technology. ,vol. 35, pp. 1367- 1372 ,(2001) , 10.1021/ES001408Z
P. Seller, C. A. Kelly, J. W. M. Rudd, A. R. MacHutchon, Photodegradation of methylmercury in lakes Nature. ,vol. 380, pp. 694- 697 ,(1996) , 10.1038/380694A0
Changbo Zhang, Lei Wang, Feng Wu, Nansheng Deng, Quantitation of Hydroxyl Radicals from Photolysis of Fe(III)-Citrate Complexes in Aerobic Water (5 pp) Environmental Science and Pollution Research. ,vol. 13, pp. 156- 160 ,(2006) , 10.1065/ESPR2005.10.287
Hong Zhang, Steve E. Lindberg, Sunlight and iron(III)-induced photochemical production of dissolved gaseous mercury in freshwater. Environmental Science & Technology. ,vol. 35, pp. 928- 935 ,(2001) , 10.1021/ES001521P
Patrick L. Brezonik, Jennifer Fulkerson-Brekken, Nitrate-Induced Photolysis in Natural Waters: Controls on Concentrations of Hydroxyl Radical Photo-Intermediates by Natural Scavenging Agents Environmental Science & Technology. ,vol. 32, pp. 3004- 3010 ,(1998) , 10.1021/ES9802908