Occurrence and Toxicological Risk Assessment of Polycyclic Aromatic Hydrocarbons and Heavy Metals in Drinking Water Resources of Southern China

Muting Yan, Huayue Nie, Wenjing Wang, Yumei Huang and Jun Wang
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Muting Yan: College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
Huayue Nie: College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
Wenjing Wang: College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
Yumei Huang: College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
Jun Wang: College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China

IJERPH, 2018, vol. 15, issue 7, 1-12

Abstract: Polycyclic aromatic hydrocarbons (PAHs) and heavy metals exposure is related to a variety of diseases and cancer development, posing a great health risk to humans. In this study, water samples were collected from nine important water sources in Guangdong, Guangxi and Hainan provinces to determine the degree of PAHs and heavy metals contamination. Overall, the total contents of 16 PAHs and heavy metals were found within the permissible levels. In human health risk assessment, the benzo( a )pyrene equivalent concentration (BaP eq ) presented a much lower level than the guideline values announced by Chinese Environmental Protection Agency (CEPA) and United States Environmental Protection Agency (US EPA), demonstrating that the PAHs contamination level in drinking water was mostly acceptable. For heavy metals, the Chronic daily intake (CDI), hazard quotient (HQ) or hazard index (HI) suggested that the water quality in nine water sources was desirable and did not present a risk to human health.

Keywords: drinking water; health risk; PAHs; heavy metals; water pollution (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2018
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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