Enrichment and solubility of trace metals associated with magnetic extracts in industrially derived contaminated soils
Enrichment and solubility of trace metals associated with magnetic extracts in industrially derived contaminated soils
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工业污染土壤中与磁性提取物相关的微量金属的富集和溶解度
DOI：
10.1007/s10653-011-9447-6
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发表时间：
2012-01
影响因子：
4.2
通讯作者：
Y.Y.Chen
中科院分区：
文献类型：
--
作者：
S.G.Lu;H.Y.Wang;Y.Y.Chen
采用磁分离法提取工业污染土壤中的磁性组分。采用王水、去离子水、毒性特征浸出法（TCLP）和胃液模拟法（GJST）等提取试验，分析了磁性颗粒和非磁性颗粒中总的、可溶的和生物可利用的Cr、Cu、Pb和Zn。与非磁性组分相比，土壤微纤维富集Fe、Mn、Pb、Cd、Cr、Cu和Ni。提取试验表明，土壤微纤维含有较高的水，TCLP，和GJST提取的铬，铜，铅，锌浓度比土壤NMF。微囊藻土中TCLP提取态Pb含量超过美国环保局危险废物标准，表明微囊藻土具有潜在的环境污染风险。在不同的萃取试验中，微量金属的溶解度是不同的，其顺序为GJST > TCLP >水。TCLP试验表明Cu和Zn的可移动的大于Cr和Pb，GJST试验表明Cu、Cr、Zn的生物可利用性大于Pb。这些结果表明，工业污染土壤中的微生物污染水体的可能性较大，需要进行仔细的环境影响评价。
Magnetic fractions (MFs) in industrially derived contaminated soils were extracted with a magnetic separation procedure. Total, soluble, and bioaccessible Cr, Cu, Pb and Zn in the MFs and non-magnetic fractions (NMFs) were analyzed usingaqua regiaand extraction tests, such as deionized water, toxicity characteristic leaching procedure (TCLP), and gastric juice simulation (GJST) test. Compared with the non-magnetic fractions, soil MFs were enriched with Fe, Mn, Pb, Cd, Cr, Cu, and Ni. Extraction tests indicated that soil MFs contained higher water, TCLP, and GJST-extractable Cr, Cu, Pb, and Zn concentrations than the soil NMFs. The TCLP-extractable Pb concentration in the MFs exceeded the USEPA hazardous waste criteria, suggesting that soil MFs have a potentially environmental pollution risk. Solubility of trace metals was variable in the different extraction tests, which has the order of GJST > TCLP > water. TCLP test showed Cu and Zn were more mobile than Cr and Pb while bioaccessibility of trace metal defined by GJST test showed the order of Cu ≈ Cr ≈ Zn > Pb. These findings suggested that the MFs in the industrially derived contaminated soils had higher possibility of polluting water bodies, and careful environmental impact assessment was necessary.
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DOI：
10.1080/10588339891334212
发表时间：
1998-03
期刊：
Journal of Soil Contamination
影响因子：
--
作者：
R. Rikers;P. Rem;W. Dalmijn;A. Honders
通讯作者：
R. Rikers;P. Rem;W. Dalmijn;A. Honders
影响因子：
8.1
作者：
K. Chiang;Chen-Chiu Tsai;Kuen‐Sheng Wang
通讯作者：
K. Chiang;Chen-Chiu Tsai;Kuen‐Sheng Wang
天然土壤和受污染土壤中潜在有毒元素的固体形态和流动性： 综合方法
影响因子：
8.8
作者：
Kierczak, J.;Neel, C.;Puziewicz, J.
通讯作者：
Puziewicz, J.
影响因子：
11.4
作者：
Ruby, MV;Davis, A;Sellstone, CM
通讯作者：
Sellstone, CM
影响因子：
--
作者：
T. S. Oliveira;M. Fontes;L. M. D. Costa;A. Horn
通讯作者：
T. S. Oliveira;M. Fontes;L. M. D. Costa;A. Horn