干旱区生态环境知识资源中心(Arid): Tessier 法和改进BCR 法提取施加熟污泥后黄土中Cd 的对比研究

Arid

	Tessier 法和改进BCR 法提取施加熟污泥后黄土中Cd 的对比研究
其他题名	COMPARATIVE STUDY OF TESSIER METHOD AND MODIFIED BCR METHOD FOR EXTRACTING Cd IN LOESS AMENDED BY COMPOSTED SLUDGE
	张永利 1; 刘晓文 2; 陈启敏 1; 杨潇焱 1; 南忠仁1
来源期刊	环境工程
ISSN	1000-8942
出版年	2019
卷号	37 期号:5 页码:34-38,81
中文摘要	探究适合于施加熟污泥改良后的我国西北干旱区、半干旱区贫瘠黄土中Cd 形态分析的方法,对防治黄土Cd 污染具有重要意义。分别采用Tessier 和改进BCR 连续提取法分析了施加熟污泥后黄土中Cd 形态。施加熟污泥后,黄土中Cd 胁迫增大,Tessier 和改进BCR 连续提取法测定的FMO、OM 含量较对照组均稳定增加,而RES 无明显变化,Cd形态再分布未趋向RES 稳定矿化。使用Tessier 连续提取法,施加熟污泥后的黄土Cd 形态主要为AC;使用改进BCR连续提取法,随着施加熟污泥黄土Cd 胁迫增大,AC 渐为主要形态。改进BCR 连续提取法测得的Cd 形态含量及分布更为显著,生物有效性相关系数大,生物有效性拟合结果更高(P<0.01),因此认为其更适合施加熟污泥后黄土Cd 形态分析研究。
英文摘要	It is of great significance for preventing and controlling Cd contaminated loess to determine Cd fractionation analysis method which is suitable for barren loess applied composted sludge in arid and semi-arid areas of northwest China.This paper researched on the fractionation of Cd in loess amended by composted sludge by Tessier and modified BCR sequential extraction procedures respectively.With application of composted sludge,the Cd stress in the loess increased,and the contents of FMO and OM extracted by Tessier and improved BCR also increased stably compared with the control group,while RES showed no remarkable change and Cd fraction re-distribution showed no stable mineralization to RES.AC was the main Cd fraction in loess amended by composted sludge by Tessier sequential extraction.While for modified BCR sequential extraction,with the increase of Cd stress on loess amended by composted sludge,the AC gradually became the dominant fraction.The content and distribution of Cd fractions extracted by modified BCR were more significant,the correlation coefficient of bioavailability was larger,and the fitting result of bioavailability was better (P<0.01),thus modified BCR method was more suitable for the analysis of Cd fractions in loess amended by composted sludge.
中文关键词	熟污泥 ; 黄土 ; Tessier 法 ; 改进BCR 法
英文关键词	Cd composted sludge loess Cd Tessier method modified BCR method
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:6500137
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/239269
作者单位	1.兰州大学资源环境学院, 兰州, 甘肃 730000, 中国; 2.生态环境部华南科学研究所, 广州, 广东 510655, 中国
推荐引用方式 GB/T 7714	张永利,刘晓文,陈启敏,等. Tessier 法和改进BCR 法提取施加熟污泥后黄土中Cd 的对比研究[J]. 兰州大学,2019,37(5):34-38,81.
APA	张永利,刘晓文,陈启敏,杨潇焱,&南忠仁.(2019).Tessier 法和改进BCR 法提取施加熟污泥后黄土中Cd 的对比研究.环境工程,37(5),34-38,81.
MLA	张永利,et al."Tessier 法和改进BCR 法提取施加熟污泥后黄土中Cd 的对比研究".环境工程 37.5(2019):34-38,81.