太湖地区土壤环境中SAS的分布和降解特点

应用生态学报 ›› 2002, Vol. ›› Issue (2): 171-174.

太湖地区土壤环境中SAS的分布和降解特点

潘根兴¹, 韩永镜¹, 诸清河²

1. 南京农业大学资源与环境科学学院, 农业资源与生态环境研究所, 南京 210095;
2. 山西省农业科学院农业资源综合考察研究所, 太原 030001

收稿日期:2000-01-03 修回日期:2000-04-10 出版日期:2002-02-15
通讯作者: 潘根兴,男,1958年生,博士,教授.主要从事土壤环境学和土壤与地球表层生态系统研究.已发表论文近70篇.E-mail:gxpan@mail.njau.edll.cn
基金资助:
国家自然科学基金重点项目(49831070);教育部优秀年轻教师基金;江苏省青年科技基金;江苏省自然科学基金;教育部博士点专项研究基金资助项目

Distribution and degradation of SAS in soil environments in the Taihu Lake region

PAN Genxing¹, HAN Yongjing¹, ZHU Qinghe ²

1. Nanjing Agricultural University, Nanjing 210095;
2. Institute of Agricultural Resources Survey, Shanxi Academy of Agricultural Sciences, Taiyuan 030001

Received:2000-01-03 Revised:2000-04-10 Online:2002-02-15

摘要/Abstract

摘要： 采集了江苏省吴县市不同利用、不同乡镇和环境影响类型下的土壤样品,采用比色法分析其SAS含量,并以LAS为标物研究了SAS在土壤环境中的降解行为.结果表明,供试土壤环境中SAS达2～10mg·kg^-1,并在土壤全剖面检测到.土壤环境中SAS含量与土壤性质及其环境影响特点有关.LAS在供试土壤环境中的降解符合土壤有机质分解的一级反应动力学方程,其半衰期为10～16d,因土壤种类而异,说明SAS作为特殊的有机污染物在土壤环境中的滞留性及其可能的环境危害.

关键词: 太湖地区, 土壤环境, SAS降解, 有机污染物

Abstract: Soil samples of different soil types under different land use patterns and environmental impacts were collected in Wuxian City in the Taihu Lake region.The contents of SASwere determined by Azure Acolorimeter.Degradation of LASwas studied in the water and soil mediums by using laboratory incubation.The SASconcentration in the studied soils ranged from 2 to 10mg·kg^-1 ,varied with soil conditions.Profile distribution of SASshowed decreasing trend down to the soil bottom,where 0.7mg·kg^-1 of SASwas still detected.The degradation of LASin three dominant types of paddy soils obeyed the primary reaction equation like that of soil organic matter with the half residence time in range of 9～16 days.The data indicates the relative accumulation of SASin the soils in the Taihu Lake region and longer residence of such synthetic organic compounds in the soil environments.

Key words: Organic pollutant, SAS, Degradation, Soil environment, Taihu Lake region

中图分类号:

X131.3

潘根兴, 韩永镜, 诸清河. 太湖地区土壤环境中SAS的分布和降解特点[J]. 应用生态学报, 2002, (2): 171-174.

PAN Genxing, HAN Yongjing, ZHU Qinghe . Distribution and degradation of SAS in soil environments in the Taihu Lake region[J]. Chinese Journal of Applied Ecology, 2002, (2): 171-174.

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