有机质对污染土壤中DDTs热脱附行为的影响

环境工程学报

有机质对污染土壤中DDTs热脱附行为的影响

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王瑛, 李扬, 黄启飞, 张增强. 有机质对污染土壤中DDTs热脱附行为的影响[J]. 环境工程学报, 2011, 5(6): 1419-1424.

引用本文:

王瑛, 李扬, 黄启飞, 张增强. 有机质对污染土壤中DDTs热脱附行为的影响[J]. 环境工程学报, 2011, 5(6): 1419-1424.

Wang Ying, Li Yang, Huang Qifei, Zhang Zengqiang. Impact of organic matter on thermal desorption of DDTs in contaminated soils[J]. Chinese Journal of Environmental Engineering, 2011, 5(6): 1419-1424.

Citation:

Wang Ying, Li Yang, Huang Qifei, Zhang Zengqiang. Impact of organic matter on thermal desorption of DDTs in contaminated soils[J]. Chinese Journal of Environmental Engineering, 2011, 5(6): 1419-1424.

有机质对污染土壤中DDTs热脱附行为的影响

1.
西北农林科技大学资源环境学院，杨凌 712100； 2. 中国环境科学研究院，北京 100012
2.
中国环境科学研究院，北京 100012；3. 重庆交通大学土木土建筑工程学院，重庆 400074
基金项目:
国家科技支撑计划（2007BAC16B03，2006BAC02A19）
中图分类号: X705

Impact of organic matter on thermal desorption of DDTs in contaminated soils

1.
College of Resources and Environment， Northwest A&F University，Yangling 712100， China； 2. Chinese Research Academy of Environmental Sciences， Beijing 100012， China
2.
Chinese Research Academy of Environmental Sciences， Beijing 100012， China； 3. School of Civil and Architectural Engineering， Chongqing Jiaotong University， Chongqing 400074， China
Fund Project:

摘要: 采用2种不同性质土壤（黑土和棕壤）作为供试土壤，利用DDT农药自配滴滴涕类（DDTs，包括p，p′-DDT、o，p′-DDT、p，p′-DDD、p，p′-DDE）污染土壤。采用热脱附方法，研究了原土及去有机质后土壤中DDTs在300℃，6个停留时间（5、10、20、30、40和50 min）下的去除率以及脱附后土壤中DDTs的残留情况。结果表明，有机质的存在能够显著提高p，p′-DDT在土壤中的脱附效率(P＜0.05)，降低其在土壤中的残留浓度。同时，对p，p′-DDE的转化和脱附也有显著影响。但是对o，p′-DDT和p，p′-DDD在土壤的脱附并不存在显著影响。同时，有机质对DDTs在土壤中的去除率影响显著。
- 有机质 /
- 热脱附 /
- 污染土壤 /
- DDTs
Abstract: Two different soils， black earth and brown earth， were chosen as test samples. They were both mixed with DDT pesticide (known as DDTs， including p，p′-DDT、o，p′-DDT、p，p′-DDD and p，p′-DDE）. Under six gradually increase levels of residue times， 5，10，20，30，40 and 50 min， respectively， thermal desorption technology was adopted to study the removal rates and residual concentrations of DDTs in soils at 300℃. The results showed that the removal of p，p′-DDT could be significantly enhanced by organic matter. In addition， organic matter could remarkably influence the transformation and desorption of p，p′-DDE. By contrast， it had little impact on the removal of o，p′-DDT and p，p′-DDD. Moreover， there were significant differences in the removal rates of DDTs in soils before the removal of organic matter and after that.
- organic matter /
- thermal desorption /
- contaminated soils /
- DDTs

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王瑛, 李扬, 黄启飞, 张增强. 有机质对污染土壤中DDTs热脱附行为的影响[J]. 环境工程学报, 2011, 5(6): 1419-1424.

引用本文:

王瑛, 李扬, 黄启飞, 张增强. 有机质对污染土壤中DDTs热脱附行为的影响[J]. 环境工程学报, 2011, 5(6): 1419-1424.

Wang Ying, Li Yang, Huang Qifei, Zhang Zengqiang. Impact of organic matter on thermal desorption of DDTs in contaminated soils[J]. Chinese Journal of Environmental Engineering, 2011, 5(6): 1419-1424.

Citation:

Wang Ying, Li Yang, Huang Qifei, Zhang Zengqiang. Impact of organic matter on thermal desorption of DDTs in contaminated soils[J]. Chinese Journal of Environmental Engineering, 2011, 5(6): 1419-1424.

有机质对污染土壤中DDTs热脱附行为的影响

1. 西北农林科技大学资源环境学院，杨凌 712100； 2. 中国环境科学研究院，北京 100012
2. 中国环境科学研究院，北京 100012；3. 重庆交通大学土木土建筑工程学院，重庆 400074

收稿日期: 2011-02-26

基金项目:

国家科技支撑计划（2007BAC16B03，2006BAC02A19）

关键词:

有机质 /
热脱附 /
污染土壤 /
DDTs

摘要: 采用2种不同性质土壤（黑土和棕壤）作为供试土壤，利用DDT农药自配滴滴涕类（DDTs，包括p，p′-DDT、o，p′-DDT、p，p′-DDD、p，p′-DDE）污染土壤。采用热脱附方法，研究了原土及去有机质后土壤中DDTs在300℃，6个停留时间（5、10、20、30、40和50 min）下的去除率以及脱附后土壤中DDTs的残留情况。结果表明，有机质的存在能够显著提高p，p′-DDT在土壤中的脱附效率(P＜0.05)，降低其在土壤中的残留浓度。同时，对p，p′-DDE的转化和脱附也有显著影响。但是对o，p′-DDT和p，p′-DDD在土壤的脱附并不存在显著影响。同时，有机质对DDTs在土壤中的去除率影响显著。

English Abstract

Impact of organic matter on thermal desorption of DDTs in contaminated soils

1. College of Resources and Environment， Northwest A&F University，Yangling 712100， China； 2. Chinese Research Academy of Environmental Sciences， Beijing 100012， China
2. Chinese Research Academy of Environmental Sciences， Beijing 100012， China； 3. School of Civil and Architectural Engineering， Chongqing Jiaotong University， Chongqing 400074， China

Received Date: 2011-02-26

Fund Project:

Keywords:

Abstract: Two different soils， black earth and brown earth， were chosen as test samples. They were both mixed with DDT pesticide (known as DDTs， including p，p′-DDT、o，p′-DDT、p，p′-DDD and p，p′-DDE）. Under six gradually increase levels of residue times， 5，10，20，30，40 and 50 min， respectively， thermal desorption technology was adopted to study the removal rates and residual concentrations of DDTs in soils at 300℃. The results showed that the removal of p，p′-DDT could be significantly enhanced by organic matter. In addition， organic matter could remarkably influence the transformation and desorption of p，p′-DDE. By contrast， it had little impact on the removal of o，p′-DDT and p，p′-DDD. Moreover， there were significant differences in the removal rates of DDTs in soils before the removal of organic matter and after that.

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