Analysis of 11 kinds of trace elements in flue-cured tobacco from Hebei province

11 kinds of trace elements(Cr,Co,Ni,Se,Mn,Zn,Cu,As,Cd,Pb,Hg)in flue-cured tobacco samples containing 3 grades from 3 main tobacco-growing areas in Hebei province were detemined by ICP-MS combining with microwave digestion.The results indicated that the trace element contents from different areas were different.The differentiation of Mn,Cu,Zn,As and Pb was significant.The contents of trace elements in different parts distributed regularly.The Cu element accumulated more in middle and upper leaves while the other elements were the most in lower leaves.The Mn element content was the hightest among the 1l measured elements.The average contents of Cu,Cr,Cd,Pb,Ni,Hg and As in flue-cured tobacco from Hebei all reached the level of pollution-free tobacco from the demonstration regions.