6WHO. GEMS/Food-EURO second workshop reliable evaluation of low-level contamination of food-report of a workshop in the frame of GEMS/Food-EURO. WHO : 1995.
8CHAO D, NI H G, ZENG H. Parent and halogenated polycyclic romatic hydrocarbons in rice and implications for human health in China[J]. Environmental Pollution ,2012,168:80-86.
9Parikhit Sinha, Michael, Lambert B, et al. Evaluation methods for left-censored environmental data with detection limits [ J ]. Environmental Toxicology and 2006,25 ( 9 ) :2533 -2540.
