摘要
文章对京杭大运河(徐州段)底泥中的11个样品进行研究,对底泥中的砷的总量和形态进行测定,结果表明砷的污染已经达到中度污染并且砷的形态大部分是以钙型和包裹态形式存在。分别采用总有机碳测定仪和X-衍射(XRD)测定11样品中有机碳(TOC)的含量和底泥的成分,结果表明底泥的成分主要有石英、石膏,部分或少量的长石、方解石和粘土矿物,底泥中的有机碳的含量不能决定砷的总量和形态的分布。
18 bottom sediments from Beijing-Hangzhou Grand Canal at northern section of Jiangsu Province as research subject, contents and fractions of arsenic were analyzed by cold atomic fluorophotometry. Results showed that main fractions were Ca-As and O-As. X-ray was used for characterization of mineral composition, and minerals in the bottom sediments were mostly composed of quartz, gypsum and feldspar. No noticeable composition changes were observed from upstream to downstream, at different locations arsenic has different amount and different fractions, which couldn＇t be affected by TOC and composition of the bottom sediment.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2008年第1期69-71,共3页
Environmental Science & Technology
基金
高等学校博士学科点专项科研基金资助项目(20030290010)
关键词
京杭大运河
底泥
砷
总有机碳
徐州段
Beijing-Hangzhou Grand Canal
sediment
speciation of arsenic
total organic carbon
