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汽油中常加入有机铅作为抗爆剂。汽油在燃烧过程中 ,铅会随着汽车尾气直接排放入大气 ,从而造成铅污染。从环境和技术要求出发 ,经常要对汽油中的铅含量进行测量。本文综述了汽油试样的前处理技术和汽油中有机铅及各种形态铅的测量方法 ,对应用于汽油中铅含量测定的化学分析法、光谱法、色谱法、电化学法等方法的分析依据、测量精度、检出限、应用范围都进行了比较和评述。色谱与选择性检测器联用能对有机铅进行形态分析 ,不受汽油组分的干扰 ,并且不需要前处理。引用参考文献 2 5篇
Petrol often join organic lead as antiknock agent. In the combustion process of gasoline, lead will be directly discharged into the atmosphere as the vehicle exhaust gas, resulting in lead pollution. From the environmental and technical requirements, often to the gasoline content of lead in the measurement. This article reviews the pretreatment technology of gasoline samples and the measurement methods of organic lead and various forms of lead in gasoline, and analyzes the chemical analysis, spectroscopy, chromatography and electrochemical methods which are applied to the determination of lead in gasoline Based on, measurement accuracy, detection limit, the scope of application are compared and reviewed. Chromatography coupled with a selective detector enables morphological analysis of organic lead without interference from gasoline components and without pretreatment. Citation Reference 25 articles