Crop bioaccumulation and human exposure of perfluoroalkyl acids through multi-media transport from a mega fluorochemical industrial park, China
文献类型：期刊论文
| 作者 | Liu, Zhaoyang; Lu, Yonglong; Shi, Yajuan; Wang, Pei; Jones, Kevin; Sweetman, Andrew J.; Johnson, Andrew C.; Zhang, Meng; Zhou, Yunqiao; Lu, Xiaotian |
| 刊名 | ENVIRONMENT INTERNATIONAL
 |
| 出版日期 | 2017-09-01 |
| 卷号 | 106页码:37-47 |
| 关键词 | Pfaas Agricultural Soil Precipitation Crop Bioaccumulation Human Exposure |
| 英文摘要 | Significant quantities of perfluoroalkyl acids (PFAAs) are released to the environment from fluorochemical manufacturing processes through wastewater discharge and air emission in China, which may lead to human exposure and health risks through crop bioaccumulation from PFAAs-contaminated soil and irrigation water. This paper systematically studied the distribution and transport of PFAAs in agricultural soil, irrigation water and precipitation, followed by crop bioaccumulation and finally human exposure of PFAAs within a 10 km radius around a mega-fluorochemical industrial park (FIP). Hotspots of contamination by PFAAs were found near the FIP and downstream of the effluent discharge point with the maximum concentrations of 641 ng/g in agricultural soil, 480 ng/g in wheat grain, 58.8 ng/g in maize grain and 4,862 ng/L in precipitation. As the distance increased from the FIP, PFAAs concentrations in all media showed a sharp initial decrease followed by a moderate decline. Elevated PFAA concentrations in soil and grains were still present within a radius of 10 km of the FIP. The soil contamination was associated with the presence of PFAAs in irrigation water and precipitation, and perfluorooctanoic acid (PFOA) was the dominant PFAA component in soil. However, due to bioaccumulation preference, short-chain perfluoroalkyl carboxylic acids (PFCAs), especially perfluorobutanoic acid (PFBA), became the major PFAA contaminants in grains of wheat and maize. The bioaccumulation factors (BAFs) for both grains showed a decrease with increasing chain length of PFAAs (approximately 0.5 log decrease per CF2 group). Compared to maize grain, wheat grain showed higher BAFs, possibly related to its higher protein content. The PFCA (C4-C8) concentrations (on a log(10) basis) in agricultural soil and grain were found to show a linear positive correlation. Local human exposure of PFOA via the consumption of contaminated grains represents a health risk for local residents, especially for toddlers and children. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/38982]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Liu, Zhaoyang,Lu, Yonglong,Shi, Yajuan,et al. Crop bioaccumulation and human exposure of perfluoroalkyl acids through multi-media transport from a mega fluorochemical industrial park, China[J]. ENVIRONMENT INTERNATIONAL,2017,106:37-47. |
| APA | Liu, Zhaoyang.,Lu, Yonglong.,Shi, Yajuan.,Wang, Pei.,Jones, Kevin.,...&Khan, Kifayatullah.(2017).Crop bioaccumulation and human exposure of perfluoroalkyl acids through multi-media transport from a mega fluorochemical industrial park, China.ENVIRONMENT INTERNATIONAL,106,37-47. |
| MLA | Liu, Zhaoyang,et al."Crop bioaccumulation and human exposure of perfluoroalkyl acids through multi-media transport from a mega fluorochemical industrial park, China".ENVIRONMENT INTERNATIONAL 106(2017):37-47. |
入库方式： OAI收割
来源：生态环境研究中心
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