摘要
异味污染近几年已引起高度重视,但由于相关导则标准不完善,致使异味调查是当前污染地块调查工作中的突出难点。针对华南地区某农药厂地块进行异味调查,从生产工艺分析和预采样分析两方面着手,构建污染地块异味污染物识别技术路线,提出异味污染物筛选的基本原则和依据,探索开展土壤气异位采样分析。结果显示,从生产工艺分析、土壤预采样以及土壤气预采样中分别识别出异味污染物21种、31种和12种,汇总后共40种。此外,从相邻地块调查中识别出2种。最终筛选出试验地块关注的异味污染物为42种,包括苯系物14种、烷烯烃10种、硫化物5种、含氧有机物6种、氯代烃3种、胺类和其他4种。异味污染较为严重的点位主要位于亚胺硫磷车间、氯乙酸车间和排水管网附近,其中黏土层的污染物质量浓度较高,相关区域和土层应作为今后调查的重点。研究可为农药厂地块或其他类似污染地块的异味污染调查提供参考。
Due to a lack of investigation protocols and estimation standards,nowadays,investigation of odor pollution of pollutant sites is very difficult in China.Aiming at investigating the odor pollution condition of a pesticide factory site in South China,a technical route is proposed to select the odor pollutants of a pesticide factory site,through production processes analysis and pre-sampling analysis.The selection standards of odor pollutants were suggested.Based on preliminary pollution recognition,the pre-sampling of soil and underground water were carried out,and a total of 15 soil samples and five underground water samples were collected.Because the groundwater level in this site was high,it was difficult to set up a soil gas monitoring well,thus the soil gas was sampled in an off-line way,which means the deep soil samples were collected in gas bags,where soil gas evaporated for 30 min and was sampled.Results showed that the odor pollutants selected from production processes analysis,soil,and soil gas sampling,and analysis were 21,31 and 12,respectively,with a sum of 40 kinds.Furthermore.Two kinds of odor pollutants were selected from the investigation results of a nearby site.As a result,42 kinds of chemicals were recognized as the odor constituents of concern,including five kinds of benzenes,ten hydrocarbons,five sulfides,three alcohols,two aldehydes,one of ketone,three chloralkanes,and four amines and others.The main odor-polluted area includes the phosmet workshop,the chloroacetic acid workshop,the drain pipe,and the surroundings.Besides,the odor pollutants in the clay were higher than those of other layers,which should be focused on in later investigations.The approach and methods proposed in this study could be a reference for odor investigation of pesticide factory sites and other similar contaminated sites.
作者
刘钢
叶田田
徐冲
何晨晖
刘丽红
王振兴
谌建宇
张文珊
LIU Gang;YE Tiantian;XU Chong;HE Chenhui;LIU Lihong;WANG Zhenxing;CHEN Jianyu;ZHANG Wenshan(South China Institute of Environmental Science,Ministry of Ecology and Environment,Guangzhou 510655,China;Centre Testing International Pinbiao(Guanzhou)Co.,Ltd.,Guangzhou 510700,China)
出处
《安全与环境学报》
CAS
CSCD
北大核心
2024年第4期1623-1632,共10页
Journal of Safety and Environment
基金
公益性科研院所基本科研业务费专项资金项目(PM-zx703-202204-069)。
关键词
环境工程学
土壤污染调查
农药厂
恶臭污染
environmental engineering
soil pollution investigation
pesticide factory
odor pollution
