最新6.6-何杰论文.doc

-何杰论文
用ICP-oaTOF-MS对进出口烟叶及制品中几种重金属检测方法研究
ICP-oaTOF-MS检测进出口烟叶和卷烟中重金属和微量元素
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分类号： 好〔3天内RSD %～%〕等优点，可用于烟叶重金属的检测及质量控制，对于判断烟株的丰缺情况、鉴别和判断烟叶制品的品质具有一定的意义。
关键词：烟草；卷烟；直角加速飞行时间；微波消解；微量元素；重金属

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ICP-oaTOF-MS检测进出口烟叶和卷烟中重金属和微量元素
ICP-oaTOF-MS检测进出口烟叶和卷烟中重金属和微量元素
ABSTRACT
Smoking and health has always been greatly concerned about, the use of tobacco has great telations with death and prevalence of diseases. Some countries have carried out studies on trace elements and heavy metals in tobacco plant. Nowadays, the creation of standard, fast, and accurate methods for determining trace elements and heavy metals in tobacco is one of the imperatine research subjects of the tobacco industry.
In this thesis, the methods for digested thoroughly in a closed-vessel microwave digestion system with nitric acid and hydrogen peroxide with trace elements and heavy metals in tobacco, using time of acceleration flight inductively coupled plasma mass spectrometry (ICP-oaTOF-MS) determination of trace elements and heavy metals. The simultaneousness determination methods for 5 trace elements(Ge, Se, Mn, Zn, Fe)and 7elements(As, Cd, Hg, Pb, Cu, Cr, Ni)with 21 species domestic tobacco and 29 species foreign tobacco are studies. Then, has tudies in determination of metal ten elements (Cu, Zn, Pb, Cd, Fe, Mn, Ni, Cr, As, B)in the 8 species domestic tobacco and 9 species foreign tobacco import and export of cigarettes. Factors affecting the determination are analyzed in detail, such as sampling quantity, digestion solvent, MS detection parameters measurement isotopes for tested elements, recovery and precision tests of the method. The optimum conditions for the determination were tested and discussed.
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ICP-oaTOF-MS检测进出口烟叶和卷烟中重金属和微量元素
ICP-oaTOF-MS检测进出口烟叶和卷烟中重金属和微量元素
Then, analysis level of elements content in domestic or foreign tobacco for twelve elements, import and export of cigarettes for