河北烤烟中11种微量元素含量分析
Analysis of 11 kinds of trace elements in flue-cured tobacco from Hebei province
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摘要: 采用微波消解-电感耦合等离子体质谱法,测定河北省石家庄、保定、蔚县3个烤烟主产区不同部位烟叶样品中11种微量元素(Cr,Co,Ni,Se,Mn,Zn,Cu,As,Cd,Pb,Hg)含量.结果表明:烤烟中微量元素含量呈现地域性差异,Mn,Cu,Zn,As和Pb含量差别较大;不同部位烤烟中各微量元素含量呈现规律性分布,Cu在中、上部叶片含量较高,其余微量元素在下部叶含量较高;Mn在测定的元素中含量最高,具有潜在生理毒性的Cu,Cr,Cd,Pb,Ni,Hg,As含量较低,均达到无公害烟叶生产示范区水平.
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关键词:
- 电感耦合等离子体质谱 /
- 河北烤烟 /
- 微波消解 /
- 微量元素
Abstract: 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. -
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[1]
曹祥练,孙敬国,卢红良.重金属对烤烟产量及品质影响的研究进展[J].河北农业科学,2009,13(9):3.
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[2] FAO/UNEP/WHO GEMS. Food Contamination Monito ring Programme, Summary of 1986-1988 Monitoring Data[R]. Geneva:WHO, 1991
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