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| 地下水中苯并[a]芘来源探讨 | |
| 引用本文： | 李海明,陈鸿汉,郑西来,张达政.地下水中苯并[a]芘来源探讨[J].水文地质工程地质,2006,33(6):21-24. |
| 作者姓名： | 李海明 陈鸿汉 郑西来 张达政 |
| 作者单位： | 1. 天津科技大学水土环境污染控制研究室,天津,300457;中国海洋大学环境科学与工程学院,青岛,266071 2. 中国地质大学水资源与环境工程学院,北京,100083 3. 中国海洋大学环境科学与工程学院,青岛,266071 4. 浙江省地质环境监测总站,杭州,310007 |
| 基金项目： | 国家自然科学基金;天津市教委资助项目;天津科技大学校科研和教改项目 |
| 摘 要： | 采用色谱质谱法对2000~2002年地下水中苯并a]芘含量进行了分析,在分析苯并a]芘在地下水环境中迁移特征的基础上,初步探讨了地下水中苯并a]芘的来源。结果表明,苯并a]芘在潜水含水层、200m的承压含水层以及500m的煤系地层和1000m以上的岩溶水中都有检出,含量低,为数个ng/L;由于苯并a]芘的辛醇-水分配系数kow很大,为106个数量级,具有很强的憎水性,会强烈地被吸附在土壤颗粒物的有机碳上,因此苯并a]芘很难从表层土壤中迁移进入地下水,土壤和沉积物是其主要的环境归宿;从理论上看,地下水中的苯并a]芘是天然来源。 |
| 关 键 词： | 地下水 苯并[a]芘 来源 迁移 |
| 文章编号： | 1000-3665(2006)06-0021-04 |
| 收稿时间： | 2006-02-09 |
| 修稿时间： | 2006-04-01 |
A discussion of the source of B [a] p in groundwater |
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| LI Hai-ming,CHEN Hong-han,ZHENG Xi-lai,ZHANG Da-zheng.A discussion of the source of B [a] p in groundwater[J].Hydrogeology and Engineering Geology,2006,33(6):21-24. | |
| Authors: | LI Hai-ming CHEN Hong-han ZHENG Xi-lai ZHANG Da-zheng |
| Abstract: | The Ba]p contents in groundwater samples collected from 2000 to 2002 were detected with chromatogram and mass spectrum.The characteristics of Ba]p in surface water transported into the shallow groundwater system and the source of Ba]p were discussed in this paper.The results show that the contents of Ba]p occurring in groundwater in the phreatic aquifer,the confined aquifer at a depth of 200 m,the coal-bearing formation at a depth of 500 m and the karst aquifer at a depth of 1000 m are several ng/L.Ba]p is of high hydrophobicity because the octanol-water partition coefficient k_ow is 10~6,which is easily absorbed in the organic matter of particles in sediments,and is not easily transport through sediments into groundwater.In principle,Ba]p in groundwater comes from natural sources. |
| Keywords: | groundwater B[a]p source transport |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
