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| Risk assessment of polycyclic aromatic hydrocarbons exposed from cereal,fried and grilled food in Hangzhou |
| ZHOU Yu*, SHEN Yi, WANG Shu-ting, ZHAO Dong
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| * Department of Health Education,Hangzhou Center for Disease Control and Prevention,Hangzhou,Zhejiang,310021,China |
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Abstract Objective To assess the health risks of polycyclic aromatic hydrocarbons（PAHs）exposed through cereal,fried and grilled foods in Hangzhou.Methods A cross-sectional study was conducted to collect food consumption data of three inconsecutive days among 1 769 subjects selected by probability proportional to size sampling method from two districts in Hangzhou.Fifty samples of fried and grilled food and twenty samples of cereal were collected from five districts in Hangzhou. They were tested for B（a）P,PAH2,PAH4 and PAH8 by high performance liquid chromatography coupled with triple quadrupole gas chromatography-tandem mass spectrometry. The probabilistic models were established for the evaluation of PAHs exposure by @risk software and then margin of exposure（MOE）was calculated.Results The contents of B（a）P in one sample of fried and grilled food exceeded the limit. The median contents of PAHs ranged from 0.20 to 3.64 μg/kg. The median exposures of B（a）P,PAH2 and PAH4 from both two kinds of foods were 1.54,3.54 and 8.13 ng/（kgbw·d）in the mixed model,1.61,3.76 and 8.09 ng/（kgbw·d）in the non-parameter model. The MOEs of≤95% PAHs exposure level in one kind of food or ≤90% PAHs exposure level in both kinds of foods were more than 10 000. The MOEs of ≥97.5% exposure level of B（a）P,≥95% exposure levels of PAH2 and PAH4 in both kinds of foods in the mixed model,and ≥95% exposure levels of B（a）P,PAH2,PAH4 in both kinds of foods in the non-parameter model were less than 10 000.Conclusion The health risk of PAHs exposure was very low in more than 90% of the population in Hangzhou. However,for high-end consumers,97.5% or 99% exposure level in one kind of food and 95% exposure level in both kinds of foods had a potential health risk.
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Received: 21 September 2018
Published: 04 March 2019
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