| 某垃圾焚烧厂投产前后周边土壤二英类化合物的分布 |
| |
| 引用本文： | 王宇珊,黄道建,陈继鑫,陈晓燕,杨文超.某垃圾焚烧厂投产前后周边土壤二英类化合物的分布[J].环境科学研究,2020,33(8):1938-1945. |
| |
| 作者姓名： | 王宇珊 黄道建 陈继鑫 陈晓燕 杨文超 |
| |
| 作者单位： | 生态环境部华南环境科学研究所, 广东 广州 510655 |
| |
| 基金项目： | 中央级公益性科研院所基本科研业务专项基金（No.PM-zx703-201701-029）；广东省科技计划项目（No.2016A020221017） |
| |
| 摘 要： | 为研究垃圾焚烧厂运行对周边土壤二英类化合物（PCDD/Fs）含量的影响，采集了珠三角地区某垃圾焚烧厂投产前和投产后周边土壤样品，分析研究了该垃圾焚烧厂运行对周边土壤中PCDD/Fs含量和组分的变化.结果表明:①2012年（投产前）珠三角地区某垃圾焚烧厂周边土壤PCDD/Fs含量较低，范围为163~591 ng/kg（毒性当量范围为0.198~0.863 ng I-TEQ/kg，I-TEQ为国际毒性当量因子折算的毒性当量值）；2017—2019年（投产后）周边土壤PCDD/Fs含量范围为151~1.75×103 ng/kg（毒性当量范围为0.812~3.88 ng I-TEQ/kg），与其他研究相比处于较低的水平.②投产后，距该垃圾焚烧厂较近（1.5 km）的采样点（S1）土壤PCDD/Fs含量逐年增长，在较远（5.2 km）但人口较密集的采样点（S3）土壤PCDD/Fs含量整体较高，但呈逐年下降趋势.③投产后，土壤中的17种PCDD/Fs单体组分中，毒性当量贡献率最高的单体为八氯二苯并二英（OCDD）和2，3，4，7，8-五氯二苯并呋喃（2，3，4，7，8-PeCDF），二者毒性当量贡献率范围为15.7%~45.4%.④在同一采样点土壤PCDD/Fs单体组分年间差异不明显，但同一年份不同采样点差异明显.研究显示，目前该垃圾焚烧厂周边土壤PCDD/Fs含量较低，但仍需要长期监测其可能带来的风险.
|
| 关 键 词： | 二 id="hjkxyj-33-8-1938-M13"> 英类化合物(PCDD/Fs)" target="_blank">xlink:href="hjkxyj-33-8-1938-M1.jpg"/>英类化合物(PCDD/Fs) 土壤 生活垃圾焚烧厂 |
| 收稿时间： | 2019/9/12 0:00:00 |
| 修稿时间： | 2020/2/11 0:00:00 |
Distribution of PCDD/Fs in Soil before and after Operation of Municipal Solid Waste Incinerator |
| |
| WANG Yushan,HUANG Daojian,CHEN Jixin,CHEN Xiaoyan,YANG Wenchao.Distribution of PCDD/Fs in Soil before and after Operation of Municipal Solid Waste Incinerator[J].Research of Environmental Sciences,2020,33(8):1938-1945. |
| |
| Authors: | WANG Yushan HUANG Daojian CHEN Jixin CHEN Xiaoyan YANG Wenchao |
| |
| Affiliation: | South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China |
| |
| Abstract: | In order to investigate the concentrations and congener profiles of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in the vicinity of a municipal solid waste incinerator (MSWI) before and after its operation, soil samples were collected around a MSWI in the Pearl River Delta. The results showed that: (1) Before the MSWI operation, PCDD/Fs concentrations ranged from 163 to 591 ng/kg (0.198-0.863 ng I-TEQ/kg) in 2012. After its operation, PCDD/Fs concentrations in all soil samples from 2017 and 2019 were in the range of 151-1.75×103 ng/kg (0.812-3.88 ng I-TEQ /kg) and the concentrations were lower than those reported in other previous studies. (2) Since the MSWI operation, the PCDD/Fs concentrations in the sample closest to the MSWI (sample S1 within 1.5 km) increased year by year. And the PCDD/Fs concentrations in sample S3 (5.2 km from MSWI) located in a densely populated area was higher and decreased slightly. (3) After the operation of MSWI, the main contributors in congener profiles in the TEQ values of PCDD/Fs were OCDD and 2,3,4,7,8-PeCDF with contributions ranging from 15.7% to 45.4%. (4) The present study showed that there was little difference in the congener profiles of PCDD/Fs from the same site in different years. But there was huge difference in the congener profiles of PCDD/Fs from different sites in the same year. In conclusion, the PCDD/Fs in the soils near the MSWI was low at present, but PCDD/Fs concentration monitoring should be maintained to determine possible risks. |
| |
| Keywords: | polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) soil municipal solid waste incinerator |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《环境科学研究》浏览原始摘要信息 |
|
点击此处可从《环境科学研究》下载全文 |
|
&prev_q=xlink:href=){kind=link}