| 氢化物原子荧光光谱法测定烟草中砷 |
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| 引用本文： | 梁敏仪,王小军,冯才敏.氢化物原子荧光光谱法测定烟草中砷[J].顺德职业技术学院学报,2012,10(3):11-13. |
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| 作者姓名： | 梁敏仪 王小军 冯才敏 |
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| 作者单位： | 1. 顺德职业技术学院应用化工技术系,广东 佛山,528333
2. 勒流职业技术学校,广东 佛山,528322 |
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| 摘 要： | 采用微波消解-氢化物原子荧光法测定烟草中痕量砷:空心阴极灯电流130 mA,开启高强度模式,检测器电压为320 V,载气与保护气流速分别为200、700 mL/min,添加硫脲-抗坏血酸预还原样品中的As5+,方法检出限为0.034 ng/mL,线性相关系数为0.999。测试4种市售香烟,测试变异系数为1.34%~4.55%,加标回收率97.7%~100.2%,方法适用于烟草中砷的测定。
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| 关 键 词： | 原子荧光 烟草 砷 |
Determination of Arsenic of Tobacco by Hydride Generation Atomic Fluorescence Spectrometry |
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| Authors: | LIANG Min-yi WANG Xiao-jun FENG Cai-min |
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| Institution: | 1(1.Department of Applied Chemical Engineering,Shunde Polytechnic,Foshan Guangdong 528333,China; 2.Leliu Vocational-technical School,Foshan Guangdong 528322,China) |
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| Abstract: | Trace arsenic in tobacco was determinated by means of atomic fluorescence spectrometry with microwave digestion.The instrument parameters were as following: hollow cathode lamp current and detector voltage at 130 mA and 320 V with high intensity mode,and flow rate of Carrier gas and protecting gas at the velocity of flow of 200 mL/min and 700 mL/min respectively.Thiourea and ascorbic acid were added into sample,and arsenic was reduced from As5+ to As3+ before test by AFS.The detection limit was 0.034 ng/mL and linear correlation coefficient was 0.999.Four different tobaccos were tested,the Coefficient of variation(CV) and the recovery rate of this method were between 1.34% and 4.55% and from 97.7% to 100.2% respectively.The method is suitable for arsenic determination of tobacco. |
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| Keywords: | atomic fluoresces tobacco arsenic |
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