| 造纸厂土壤中短链和中链氯化石蜡的污染特征和风险评估 |
| 摘要点击 2238 全文点击 733 投稿时间：2020-11-01 修订日期：2020-12-03 |
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| 中文关键词 短链氯化石蜡(SCCPs) 中链氯化石蜡(MCCPs) 土壤 造纸厂 风险评估 |
| 英文关键词 short-chain chlorinated paraffins (SCCPs) medium-chain chlorinated paraffins (MCCPs) soil paper mill plant risk assessment |
| 作者 | 单位 | E-mail | | 张佩萱 | 西安科技大学地质与环境学院, 西安 710054
中国科学院生态环境研究中心环境化学与生态毒理学国家重点实验室, 北京 100085 | pxzhang1910@163.com | | 高丽荣 | 中国科学院生态环境研究中心环境化学与生态毒理学国家重点实验室, 北京 100085 | gaolr@rcees.ac.cn | | 宋世杰 | 西安科技大学地质与环境学院, 西安 710054 | | | 乔林 | 中国科学院生态环境研究中心环境化学与生态毒理学国家重点实验室, 北京 100085 | | | 徐驰 | 中国科学院生态环境研究中心环境化学与生态毒理学国家重点实验室, 北京 100085 | | | 黄帝 | 中国科学院生态环境研究中心环境化学与生态毒理学国家重点实验室, 北京 100085 | | | 王爽 | 中国科学院生态环境研究中心环境化学与生态毒理学国家重点实验室, 北京 100085 | | | 蒋思静 | 中国科学院生态环境研究中心环境化学与生态毒理学国家重点实验室, 北京 100085
江汉大学环境与健康研究院, 武汉 430056 | | | 郑明辉 | 中国科学院生态环境研究中心环境化学与生态毒理学国家重点实验室, 北京 100085
江汉大学环境与健康研究院, 武汉 430056 | |
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| 中文摘要 |
| 短链氯化石蜡是一类新型持久性有机污染物，氯化石蜡在造纸工业中常用作施胶剂，为了评估造纸厂区土壤中短链及中链氯化石蜡（SCCPs及MCCPs）的污染状况及其潜在风险，采集厂区表层和不同深度的土壤，利用全二维气相色谱-电子捕获负化学离子源-质谱（GC×GC-ECNI-MS）测定土壤中短链及中链氯化石蜡（SCCPs及MCCPs）的含量及同类物分布特征.结果表明，SCCPs和MCCPs在厂区土壤中均有检出，其含量分别为42~3853 ng·g-1和34~2091 ng·g-1，氯含量分别为59.9%~61.9%和48.7%~52.8%.不同采样点土壤样品中CPs（ΣSCCPs+ΣMCCPs）含量差异较大，污水处理区及施胶区土壤中SCCPs及MCCPs含量较高.与其他地区相比，厂区土壤中SCCPs及MCCPs处于较高水平.C10Cl6-7及C14-15Cl5是大部分土壤样品的主要同类物.主成分分析表明，厂区土壤中SCCPs及MCCPs可能主要来自于CP52产品的生产和使用.运用风险商值模型（RQ）评价SCCPs及MCCPs在造纸厂区土壤中的潜在风险，发现厂区土壤中SCCPs风险商范围为0.01~0.73，处于中等风险范围，MCCPs风险商范围为0~0.07，处于低等风险范围.儿童和成人人体暴露值低于TDI［10 μg·（kg·d）-1］，造纸厂区非饮食暴露导致的健康风险较低. |
| 英文摘要 |
| Short-chain chlorinated paraffins are persistent organic pollutants, and chlorinated paraffins were widely used as sizing agent in the paper industry. In order to investigate the levels and risk assessment of short-chain and medium-chain chlorinated paraffins in the paper mill plant, the surface soil and soil of different depths were collected.The concentrations, congener group profiles of short-chain chlorinated paraffins (SCCPs) and medium-chain chlorinated paraffins (MCCPs) in soil were determined by two-dimensional gas chromatography coupled with electron capture-negative ion mass spectrometry. The SCCPs and MCCPs concentrations were 42-3853 ng·g-1 and 34-2091 ng·g-1. The chlorine contents were 59.9%-61.9% and 48.7%-52.8%. The concentrations of SCCPs and MCCPs were different in the soil collected in different sampling site. The concentration of SCCPs and MCCPs were relatively higher in soil of sewage treatment area and coating area. The CP levels in soil from the paper mill plant were at a high level compared with those in other regions. C10Cl6-7 and C14-15Cl5 were the main congener groups in most soil samples. The results of principal component analysis showed that the CP52 commercial products may be sources of SCCPs and MCCPs in the soil. The risk quotient (RQ) for SCCPs and MCCPs were assessed in soil of paper mill plant. The results showed that the RQ values for SCCPs in soil ranged from 0.01 to 0.73 which are the medium risk, and the RQ values for MCCPs in soil ranged from 0 to 0.07, which are the low risk. The human exposure values of children and adults are lower than TDI[10 μg·(kg·d)-1] in both cases. The health risks caused by non-dietary exposure under paper mill area are low. |
