Position: Home > Articles > Bromothymol Blue as Indicator for Lead Determinatin in Food by Atomic Fluorescence Spectrometry
FOOD SCIENCE
2008,29
(5)
358-360
溴百里香酚蓝作指示剂原子荧光光谱法测定食品中的铅
作 者：
童德华;张瑞平;王永双;窦贤中;樊丹丹
单 位：
襄樊出入境检验检疫局
关键词：
溴百里香酚蓝;原子荧光光谱法;食品;铅
摘 要：
研究了氢化物原子荧光光谱法测定食品中铅的酸度控制。对样品溶液进行酸度调节后补加酸的方法来准确控制酸度,并确定样品溶液的最佳酸度为0.18mol/L,铅的浓度在5～40μg/L范围内呈现线性,相关系数达0.9999,RSD为0.22%,检出限为0.15μg/L,回收率为98.3%～104.6%。所拟方法用于米粉、奶粉、橡子淀粉、木耳、香菇等样品测定,结果满意。
译 名：
Bromothymol Blue as Indicator for Lead Determinatin in Food by Atomic Fluorescence Spectrometry
作 者：
TONG De-hua,ZHANG Rui-ping,WANG Yong-shuang,DOU Xian-zhong,FAN Dan-dan(Xiangfan Entry-Exit Inspection and Quarantine Bureau,Xiangfan 441003,China)
关键词：
bromothymol blue;atomic fluorescence spectrometry(AFS);food;lead
摘 要：
A study on effect of acidity in determination of lead in food by hydride-generation atomic fluorescence spectrometry(HG-AFS) was introduced.Instrumental and analytical conditions were optimized.The optimal acidity of the sample solution is 0.18 mol/L.The linear range of the standard curve is 5～40μg/L with the regression coefficient of 0.9999.And the detection limit of this method is found to be 0.15μg/L.The relative standard deviation(RSD) is 0.22 %.The recovery rate is between 98.3 %～104.6 %.The method has been applied to the determination of lead in starch fungi mushrooms etc with satisfactory results.
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