WU Minmin1,2, XIA Zhonghuan1,2,3,4, ZHANG Qianqian1,2, YIN Jing1,2, ZHOU Yanchi1,2, SUN Shiqi1,2, YANG Hao2,3,4
（1.Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, School of Environment,Nanjing Normal University,Nanjing210023, China;
2.Key Laboratory of Virtual Geographic Environment (Nanjing Normal University), Ministry of Education, Nanjing 210023, China;
3.Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing210023, China;
4.State Key Laboratory Cultivation Base of Geographical Environment Evolution (Jiangsu Province), Nanjing 210023, China）
Abstract:Eight kinds of vegetables, which are widely consumed by the residents in Nanjing City, were sampled in May 2015 from local large farmer’s markets and supermarkets and the concentration of PAHs(polycyclic aromatic hydrocarbons) were determined by using gas chromatography-mass spectrometry. Results show that the total amount of PAHs was within the range from 53.2±7.54 to 290±6.80 ng/g, and the 4 ring PAHs accounted for 50.0%. Total PAHs concentrations for different types of vegetables are in decreasing order as leafy vegetables, fruit vegetables, and rhizome vegetables. Source analysis and hierarchical cluster analysis by using features ratios found that incomplete combustion of coal, oil or other biomass mainly contributes to the concentration of PAHs. Ingestion of PAHs by different groups of people in Nanjing is in the range of 193-328 ng/d, and the incremental lifetime cancer risk was 4.12×10-6-2.39×10-5, indicating low potential carcinogenic risk. However, health effect owing to the consumption of PAHs should not be ignored.
Keywords:PAHs;vegetables;characterization;ingestion exposure; health risk
EARTH AND ENVIRONMENT Vol.45, No.4, Tot No.318, 2017, Page 447-454
