水土保持通报2017，Vol.37Issue(4)：99-105,7.DOI:10.13961/j.cnki.stbctb.2017.04.017
太原小店污灌区农田土壤多环芳烃的污染特征及其来源
Pollution Characteristics and Sources of Polycyclic Aromatic Hydrocarbons in Farmland Soil of a Sewage Irrigation Area
摘要
Abstract
[Objective] This study analyzed the pollution characteristics and sources of polycyclic aromatic hydrocarbons(PAHs) in farmland soil from Xiaodian sewage irrigation area in Taiyuan City.The results should facilitate the development of farmland environment evaluation and soil pollution prevention strategy in the study area.[Methods] 15 surface soil samples were collected,and their concentrations and composition of 16 PAHs listed for prior control by US EPA were detected with a gas chromatography equipped with mass spectrometry (GC/MS).The sources and ecological risks of the soils were assessed.[Results] The results showed that 16 PAHs were generally detected,with the detection ratio of 100％.The total PAHs concentrations varied from 0.315 to 7.661 μg/g,with an average value of 3.568 μg/g.In terms of composition,the contents of PAHs of 2,3 rings accounted for 64.2％ of the total PAHs,the contents of PAHs of 4 rings accounted for 14.2％,and the percentage of 5,6 ring-PAHs was 21.6％.Thus,the contents of PAHs with low and middle rings were much higher.Based on ratio method and in-site investigation,it was induced that the PAHs sources were not only related with water quality and history of sewage irrigation,but also with the sources from the combustions of wood,coal and fossil fuels.[Conclusion] Compared with the relative research of farmland soils at home and abroad,PAHs pollution in this area was in medium or higher level.According to the standards recommended by Maliszewska-Kordybach,the total concentrations of PAHs exceeded the limited value in all the sampling points.However,these values were below the "National Environmental quality standards for soils (GB15618-2008)" proposed by China.关键词
污灌区/农田土壤/多环芳烃/污染特征/来源Key words
sewage irrigation area/farmland soil/PAHs/pollution characteristics/sources分类
资源环境引用本文复制引用
赵颖,张丽..太原小店污灌区农田土壤多环芳烃的污染特征及其来源[J].水土保持通报,2017,37(4):99-105,7.基金项目
国家自然科学基金项目“白洋淀湿地水—土—植被体系碳排放及其调控机理研”(41601202),“生态补水影响下白洋淀湿地水生态系统对水文—气象—环境要素的响应关系研究”(41401020) （41601202）
山西省青年科技研究资助项目(2015021173) （2015021173）
