摘要
沉积物是汞在水体中的主要分布相,同时也被认为是许多水生生物摄取汞的主要途径.本文综述了近年来在沉积物中汞的生物可利用性领域所取得的最新研究进展,包括体外消化液萃取法估测沉积物中汞的生物可利用性、可能影响汞生物可利用性的生物地球化学因素(汞在沉积物中的浓度、沉积物的组成、汞与沉积物的接触时间、汞与沉积物的结合形式,以及沉积物中的细菌等).最后对沉积物中汞生物可利用性的未来研究方向进行了展望.
ediments are often considered as a sink of mercury,but they can also become a source of mercury accumulation in many benthic invertebrates.Here we review the recent progresses in studying the bioavailability of sedimentary mercury（both inorganic mercury and methylmercury）.These include the in vitro digestive extraction of mercury in sediments and the effects of biogeochemical factors on the bioavailability of mercury in sediments（mercury concentration in sediments,sediment composition,contact time between mercury and sediments,different sorption between mercury and sediments,and bacteria in sediments）.We finally discuss the perspectives for future research in the area of mercury bioavailability in sediments.
出处
《环境化学》
CAS
CSCD
北大核心
2011年第1期165-178,共14页
Environmental Chemistry
关键词
汞
沉积物
生物可利用性
消化液萃取
生物地球化学
mercury
sediment
bioavailability
digestive fluid extraction
biogeochemistry
