The Accumulation Characteristics,Residues Detection and Risk Assessment of Lead(Pb) in Chinese Prickly Ash from Main Production Areas in Sichuan

In this paper,18 experimental points of Chinese prickly ash main production areas in Sichuan were taken as objects,aiming to study the accumulation characteristics of lead and risk of eating.The results showed that:barks,branches,leaves,and cones of Chinese prickly ash all had certain ability to enrich lead in soil; the organic form contents in every plant tissue of Chinese prickly ash were significantly higher than other 4 forms; the total lead content in every peel sample was significantly higher than that in other tissue samples; the difference in total lead content between branch and leaf samples was not obvious;The total lead contents of barks was lower; The Nemerow Pollution Index P value grade showed certain overproof risk; The total lead content of soil had no obvious relationship with peels; But the higher the bioavailability K value of soil,the bigger the enrichment risk of peels; The target risk factor (THQ) of Pb in Chinese prickly ash for adults was far lower than 1.0,which explained that the Pb content in edible parts of Chinese prickly ash was extremely low-risk to our consumers' health in a short period.