Received:26 December 2019,
Published:15 June 2020
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Hui ZENG, Jiaohua LUO, Weidong ZHANG, et al. Health risk assessment of polycyclic aromatic hydrocarbons and phthalates in finished water from waterworks in a metropolis[J]. Journal of Third Military Medical University, 2020, 42(11): 1116-1123.
Hui ZENG, Jiaohua LUO, Weidong ZHANG, et al. Health risk assessment of polycyclic aromatic hydrocarbons and phthalates in finished water from waterworks in a metropolis[J]. Journal of Third Military Medical University, 2020, 42(11): 1116-1123. DOI: 10.16016/j.1000-5404.201912256.
Objectives
2
To evaluate the potential hazards of polycyclic aromatic hydrocarbons (PAHs) and phthalates (PAEs) in the finished water from waterworks in a big city.
Methods
2
A total of 300 L finished water were collected from 3 waterworks with water intakes at Jialing river and Yangtze river before and after the confluence of 2 rivers
respectively. After enrichment
16 kinds of optimal control PAHs and 17 kinds of PAEs were detected. Carcinogenic risk and non-carcinogenic risk were calculated according to the test results by using the water environmental health risk assessment model recommended by International Commission on Radiological Protection (ICRP).
Results
2
There were 7 PAHs and 9 PAEs detected. The total amount of PAHs was 0.605~0.947 μg /L
and benzoa (a) pyrene (BaP) ranged from 0.011 to 0.014 μg/L
and diethylhexyl phthalate (DEHP) from 3.047 to 3.608 μg/L. The total health risk was 1.82×10
-5
~2.13×10
-5
a
-1
for men and 2.42×10
-5
~2.83×10
-5
a
-1
for women.
Conclusion
2
Persistent organic pollutants (POPs) are detected in the finished water of 3 water plants in the main urban area of a metropolis. The contents of PAHs are lower than the limiting levels of the Water Quality Standards for Urban Water Supply (CJ/T206-2005); but that of BaP is slightly larger than 0.01 μg/L
the limiting value of the Standards for Drinking Water Quality (GB5749-2006). The level of DEHP is lower than the limiting value of the above standard. The health risks caused by it are still under the acceptable level of ICRP (5.0×10
-5
a
-1
).
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