福建省地产茶叶中14种元素的分析与研究
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王文伟 男 主管技师 研究方向为食品卫生理化检验

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TS272

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厦门市卫生局青年创新科研项目(WQK0624)


Fourteen kinds of elements in teas from Fujian province
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    摘要:

    目的 了解福建省不同地区不同茶叶中铅、砷、铜、铁、锰、锌、镉、铝、硒、镍、铬、钴、锡、铋等14种元素的含量分布,为茶叶资源的开发利用提供科学依据。 方法 从福建省主要产茶地区的产地和市场随机抽取9个茶叶品种共112份样品,用微波消解-电感耦合等离子体质谱法(ICP-MS)测定样品中14种元素含量。 结果 9种茶叶中14种元素的含量水平分别为:锰135?1797mg/kg,铝69?1126mg/kg,铁37?371mg/kg,锌3.93?90.05mg/kg,铜2.25?43.66mg/kg,镍0.95?7.40mg/kg,铅0.29?5.45mg/kg,铬0.10?2.39mg/kg,钴0.018?0.67mg/kg,硒0.020?0.68mg/kg,镉0.014?0.24mg/kg,砷0.023?0.30mg/kg,锡0.010?0.49mg/kg,铋0.006?0.073mg/kg,铅合格率为99.1%,铬、镉、砷合格率为100%。 结论 福建省地产茶叶中都富含锰、铝、铁、锌、铜。铬、镉、砷、铅等有害元素污染水平较轻,且不同地区不同茶叶中元素含量存在差异。

    Abstract:

    Objective To understand the content of fourteen kinds of elements including plumbum, arsenic, cuprum, ferrum, manganese, zinc, cadmium, aluminum, selenium, nickel, chromiumo, cobalt, stannum and stibium in teas collected from different areas with different categories in Fujian so as to provide a scientific basis for the development of tea resources. Methods Inductively coupled plasma mass spectrometry with microwave digestion was developed to determine the content of Pb, As, Cu, Fe, Mn, Zn, Cd, Al, Se, Ni, Cr, Co, Sn and Sb from nine categories of teas in Fujian province. Results The content of 14 kinds of elements in 9 categories of teas were: Mn 135-1797mg/kg, Al 69-1126mg/kg, Fe 37-371mg/kg, Zn 3.93-90.05mg/kg, Cu 2.25-43.66mg/kg, Ni 0.95-7.40mg/kg, Pb 0.29-5.45mg/kg, Cr 0.10-2.39mg/kg, Co 0.018-0.67mg/kg, Se 0.020-0.68mg/kg, Cd 0.014-0.24mg/kg, As 0.023-0.30mg/kg, Sn 0.010-0.49mg/kg and Bi 0.006-0.073mg/kg. The qualified rate for Cr, Cd and As was 100%, and that for Pb was 99.1%. Conclusion The contents of Mn, Al, Fe, Zn and Cu were abundant in teas from Fujian province. The pollution of hazardous elements Cr, Cd, As and Pb was low, and the content of elements in teas was varied with the areas of production and categories.

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王文伟,骆和东,周娜,白艳艳.福建省地产茶叶中14种元素的分析与研究[J].中国食品卫生杂志,2011,23(3):265-269.

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  • 收稿日期:2010-09-08
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