Evaluation of a sequential extraction for the speciation of thorium in soils from Baotou area, Inner Mongolia

	Evaluation of a sequential extraction for the speciation of thorium in soils from Baotou area, Inner Mongolia
	Guo PR ; Duan TC ; Song XJ ; Chen HT
刊名	talanta
	2007
卷号	71 期号:2 页码:778-783
关键词	HEAVY-METALS SINGLE EXTRACTIONS SEWAGE-SLUDGE TRACE-METALS SEDIMENTS FRACTIONATION BCR SORPTION ZN CD
ISSN号	0039-9140
通讯作者	chen ht
中文摘要	sequential extraction procedures were widely applied for speciation of radioactive elements. in this study, the sequential extraction procedure developed by martinez-aguirre was employed for quantification of different chemical forms of thorium in the soil. the total amount of thorium in contaminated soil was much higher by four-fold than the local background value. the soil properties affect the amount of thoriurn and distribution of fractions in contaminated soil. results showed that the proportion of thorium in soils from baotou was found as the residual fraction (f5 + f6) > absorbed fraction (f3), coprecipitated fraction (f4) > carbonates fraction (172) and exchangeable fraction (f1) that could be available to plants. the recovery, calculated by ratio of the sum of the six fractions to the pseudo-total content of thorium, was in the range from 96% to 110%. a comparison was carried out between the sequential extraction and the single extraction to evaluate the selectivity of the extractants. it was found that the amount of thorium of absorbed fraction (h) was higher in the single extraction than that estimated in the sequential extraction, possibly duo to transform of the labile form. while for non-residual fraction analysis, the single extraction scheme was a desirable alternative to the sequential extraction procedure.
收录类别	SCI
语种	英语
WOS记录号	WOS:000244369600040
公开日期	2010-07-13
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/14267]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Guo PR,Duan TC,Song XJ,et al. Evaluation of a sequential extraction for the speciation of thorium in soils from Baotou area, Inner Mongolia[J]. talanta,2007,71(2):778-783.
APA	Guo PR,Duan TC,Song XJ,&Chen HT.(2007).Evaluation of a sequential extraction for the speciation of thorium in soils from Baotou area, Inner Mongolia.talanta,71(2),778-783.
MLA	Guo PR,et al."Evaluation of a sequential extraction for the speciation of thorium in soils from Baotou area, Inner Mongolia".talanta 71.2(2007):778-783.