摘要
研究了东海近岸沉积物中酸可挥发性硫化物（AVS）的水平分布和垂直分布。由于该区域水深较浅、水的垂直交换带来的氧的补充,表层沉积物中AVS的含量较低,大部分站位低于检出限。而对于AVS的垂直分布,其含量范围为0～5.82μmol/g。不同站位检出AVS的深度不同,这主要是由有机质含量和沉积物的孔隙度控制的,高有机质含量和低孔隙度将有利于AVS的生成。从可检测到AVS的层次以深,AVS含量基本随深度增加,呈现出较稳定的沉积状态。通过与不同沉积环境的AVS的测定结果进行比较发现,不同沉积环境下AVS的含量存在一定差异,研究区域AVS的含量与珠江口附近沉积物相近。
The spatial and vertical distributions of acid volatile sulfide （AVS） in sediments of coastal zone of the East China Sea were studied. In this area, the concentrations of AVS were very low, less than the detection limit in surface sediments because of shallow water and free exchange of oxygen between the sediments and water. As to core sediments, the concentrations of AVS ranged from 0 to 5.82μmol/g （dry weight）. The depth in which AVS can be detected is different among the stations. It mainly resulted from different concentrations of organic matter and different porosity. The high concentrations of organic matter and low porosity are attributed to the formation of AVS. In the deep layer of core sediments, the concentrations of AVS are increased with the increase of depth. It shows the steady sedimentation environment. Comparison with the other sea areas, it shows that the concentrations of AVS in the investigated area are different from the other areas, but are comparable with that in the Zhujiang （Pearl River） Estuary.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2009年第5期482-486,共5页
Marine Environmental Science
基金
国家重点基础研究发展规划项目(2006CB400602)
新世纪优秀人才支持计划项目(NCET-05-0593)
关键词
酸可挥发性硫化物(AVS)
东海近岸
沉积物
分布
acid volatile sulfide （AVS）
coastal shelf of East China Sea
sediments
distribution
