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| Pollution characteristics and health assessment of phthalate esters and polycyclic aromatic hydrocarbon in soils of plastic-producing site |
| Received:December 05, 2021 |
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| KeyWord:soil;polluted site;plastic;phthalate esters;polycyclic aromatic hydrocarbon;pollution characteristics;health risk |
| Author Name | Affiliation | E-mail | | YAN Qingyun | Guangzhou Research Institute of Environmental Protection, Guangzhou 510620 | | | YANG Yaoshuai | Guangzhou Research Institute of Environmental Protection, Guangzhou 510620 | | | LUO Haikun | Guangzhou Research Institute of Environmental Protection, Guangzhou 510620 | | | WU Jing | Guangzhou Research Institute of Environmental Protection, Guangzhou 510620 | | | ZHANG Shengwei | Guangzhou Research Institute of Environmental Protection, Guangzhou 510620 | | | LI Yanwen | Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632 | | | XIANG Lei | Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632 | xianglei@jnu.edu.cn | | MO Cehui | Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632 | tchmo@jnu.edu.cn |
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| Abstract: |
| In order to clarify the soil pollution induced by plastic producing, contents of phthalate esters(PAEs) and polycyclic aromatic hydrocarbons(PAHs) were investigated in soils of typical plastic-producing site in southern China. Furthermore, the health assessments of the target compounds were also conducted. Results showed that only Di-2-ethyl hexyl phthalate(DEHP) was detected among PAE compounds, with 80.6% of detection rate, 16.0 mg·kg-1 of mean content, and 1 300 mg·kg-1 of maximum detected contents. Such a content (1 300 mg·kg-1) is the maximum content of PAE compounds detected in China soil so far. Fifteen PAH compounds were detected to some extent, with 33.1% of detection rate, 0~35.4 mg·kg-1 of detected content, and 1.7 mg·kg-1 of mean content. Based on the Soil Environment Quality-Risk Control Standard for Soil Contamination of Development Land(GB 36600-2018), the detected contents of DEHP, Benzo(a) pyrene(BaP), and Dibenzo(a, h) anthracene(DahA) exceeded the screening values of the fist-class land, with the over-limit ratios of 1.4%, 5.0%, and 1.4% for DEHP, BaP, and DahA, respectively. DEHP exceeded the screening value in pipe material warehouse, which was associated with storage and use of PVC materials. BaP and DahA exceeded the screening value in materials warehouse, and the similar issue for BaP also occurred in printing ink warehouse and printing recombination workshop. This could be attributed to the fact that coal and crude oil were used as fuels and printing ink was applied, which could release PAH compounds. The detected rates and contents of DEHP, BaP and DahA obviously decreased with the increasing soil depth. Health assessment showed that non-carcinogenic risks of DEHP, BaP and DahA were within the acceptable range, but carcinogenic risks of DEHP in 1.4% sample and BaP in 2.8% sample exceeded the acceptable level, which were mainly attributed to oral intake and skin exposure. The findings of this study indicated that plastic producing could cause severer pollution of PAEs and PAHs in soils. |
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