| 亚硫酸钠中痕量铅的原子吸收测定 |
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| 引用本文： | 张秀香.亚硫酸钠中痕量铅的原子吸收测定[J].鲁东大学学报,1990(1). |
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| 作者姓名： | 张秀香 |
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| 作者单位： | 烟台师范学院化学系 |
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| 摘 要： | 用APDC-DDTC-MIBK-环已烷体系萃取Na_2SO_3中的铅,并利用空气-乙炔火焰测定其含量。建立了优化的萃取和测定条件,并对可能存在的元素进行了干扰实验。结果测出分析纯的Na_2SO_3中铅含量为2.3mg·L~(-1),食品保鲜剂中铅含量为0.15mg·L~(-1)。本方法的相对标准偏差(D_(RS))为2·4%左右,回收率接近99%。
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| 关 键 词： | 原子吸收法 铅 萃取 测定 |
ATOMIC ABSORPTION DETERMINATION OF TRACE LEAD IN SODIUM SULPHITE |
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| Zhang Xiuxiang.ATOMIC ABSORPTION DETERMINATION OF TRACE LEAD IN SODIUM SULPHITE[J].Ludong University Journal (Natural Science Edition),1990(1). |
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| Authors: | Zhang Xiuxiang |
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| Institution: | Chemistry Department |
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| Abstract: | Lead in Na2SO3 is extracted with systems of APDC-UUTC-MIBK-cyclohexane and determined with air-ethyne flame method. Optimal extraction and determination conditions are established , and some
nterfering elements are also studied.The results show that concentrations of lead in AR grade Na2SO3 and in food protecting agent are 2.3mg-L-1 and 0.15mg-L-1, respectively. The relative standard deviation (DRS) of this method is about 2.4%, and the rate of recovery is close to 99%. |
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| Keywords: | atomic absorption spectrometry lead extraction determination |
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