微波消解-原子吸收法快速测定汽油中的锰铅铁

Microwave Digestion-Atomic Absorption Spectrometry for Rapid Determination of Gasoline of Mn,Pb and Fe

提出了微波消解-原子吸收法测定汽油中锰、铅、铁的分析方法。汽油样品用硝酸和少量高氯酸(混酸)做溶剂经过60℃水浴预处理后。在密闭容器中进行消解,样品溶解完毕泄压后,定容,用原子吸收仪器自有的快速序列分析功能的同时测定锰、铅、铁的含量,快速高效。同时考察了微波消解称样量、溶剂用量及共存离子对分析结果的影响,其标准样品的测定结果与标准值一致。本法适应于汽油中锰、铅、铁的测定。

The microwave digestion -atomic absorption spectrometry analysis method of manganese, lead and iron in gasoline was proposed. Gasoline samples with nitric acid and small amounts of perchlorate （ mixed acid） do solvent after 60 °C water bath pretreatment. In the sealed container, the sample was dissolved after pressure relief, constant volume with the atomic absorption instrument own rapid sequence analysis function and the content of manganese, and lead, iron were determined fast and efficiently. The weight, the amount of solvent, and ions of the microwave digestion sample on the analysis results were also investigated, and the measurement result was consistent with the standard value of its standard samples. This method was suitable to the determination of manganese, lead and iron in gasoline.