| 恒温消化原子荧光法测定面粉中的痕量铅 |
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| 引用本文： | 蒋伯成,王博.恒温消化原子荧光法测定面粉中的痕量铅[J].齐齐哈尔轻工业学院学报,2009(3):14-16. |
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| 作者姓名： | 蒋伯成 王博 |
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| 作者单位： | 黑龙江省质量监督检测研究院,哈尔滨163001 |
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| 摘 要： | 研究了恒温消化发生原子荧光恒温消化法测量面粉中的痕量铅含量,采用DTD-30恒温消解仪于90℃预消解35 min,180℃消化35 min除去残酸。采用AFS-230E型双道原子荧光光度计,采用氢化物—原子荧光法测定面粉中的铅含量,实验确定了最佳测定条件。该法测定面粉中铅含量的相对标准偏差RSD为1.35%（n=9）,检出限为0.1 ng/mL。铅的线性范围为0～30 ng/mL,相关系数大于0.998。加标回收率为106.92%。
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| 关 键 词： | 原子荧光 面粉 铅 |
Determination of lead in flour by constant temperature digestion atom fluorescence spectrometer |
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| Authors: | JIANG Bo-cheng WANG Bo |
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| Affiliation: | ( Quality Monitor and Test Institute of Heilongjiang Province, Harbin 150050, China ) |
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| Abstract: | In this paper Lead in was determined by constant temperature digestion atom fluorescence spectrometry by AFS-230E Atom Fluorescence Spectrometer. Pre-digestion for 30 min with DTD-30 constant-temperaturc digestion apparatus at 90℃, and digestion for 35 min at 180% to removal residual acid. The optimum test conditions were determined by experiment. The relative standard deviation of the method is 1.35%（n=9）, test limit is 0.1ng/mL,the linearly with the concentration over the range of 0-30 ng/mL for lead, relative ratio is 0.998. The recovery date was 106.92%. |
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| Keywords: | atom fluorescence flour lead |
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