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Sci Total Environ. 2018 Aug 1;631-632:81-91. doi: 10.1016/j.scitotenv.2018.03.009. Epub 2018 Mar 7.

The health risk levels of different age groups of residents living in the vicinity of municipal solid waste incinerator posed by PCDD/Fs in atmosphere and soil.

Author information

1
School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.
2
MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China. Electronic address: zhangying@nankai.edu.cn.
3
SINOPEC PSTC Ningbo Oil Transportation Department, Ningbo 315207, China.
4
Pharmaron Ningbo Co., Ningbo 315207, China.
5
Jiangsu Jiaxin Testing Company Limited, Suzhou 215000, China.
6
School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China. Electronic address: nzg@tju.edu.cn.

Abstract

In our study, health risk levels of different age groups of residents living in the vicinity of a municipal solid waste incinerator (MSWI) posed by polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) in atmosphere and soil were evaluated. The toxic equivalent concentrations of PCDD/Fs (TEQ) in surrounding atmosphere and soil of studied MSWI were 0.05-0.12 pg I-TEQ Nm-3 and 7.622-15.450 ng I-TEQ kg-1, respectively. The PCDFs/PCDDs (F/D) values of PCDD/Fs in surrounding atmosphere of studied MSWI ranged from 0.40 to 5.90 with a mean of 1.80, suggesting that the PCDD/Fs mainly came from combustion sources and studied MSWI could be a key source of PCDD/Fs in surrounding atmosphere. The F/D ratios of PCDD/Fs in surrounding soil ranged from 0.18 to 1.81 with a mean of 0.90, suggesting combustion is not the mainly sources of PCDD/Fs in surrounding soil, and studied MSWI may have limited influence on PCDD/Fs in surrounding soil. O8CDD and 2,3,4,7,8-P5CDF could be the total PCDD/Fs and TEQ indicators in surrounding atmosphere of studied MSWI, respectively. The carcinogenic risk (CR) values of PCDD/Fs in surrounding atmosphere and soil for children, teens and adults were 1.24E-06, 9.06E-07 and 4.41E-06, respectively, suggesting that the potential cancer risk occurred but the risk was at acceptable levels for both children and adults (<1.00E-05), and the cancer risk for teens was negligible (<1.00E-06). The non-carcinogenic risk (non-CR) values of three age groups were lower than 1, indicating that no obvious non-carcinogenic effects occurred. Inhalation of air was the largest contributor of health risk (both CR and non-CR) for three age groups. In addition, a comparison of the health risk between PCDD/Fs and other emerging contaminants and traditional pollutants in soil and atmosphere was performed, which will help us have a good view of the health risk levels of PCDD/Fs in surrounding environment of MWSI.

KEYWORDS:

Health risk and health risk levels; PCDD/Fs; PCDFs/PCDDs ratio; Surrounding atmosphere and soil; Surrounding residents; Total PCDD/F and TEQ indicators

PMID:
29524905
DOI:
10.1016/j.scitotenv.2018.03.009
[Indexed for MEDLINE]

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