CAJ | 학술논문

通过时双硫腙目视比色法测定四乙基铅的方法进行改进,利用四乙基铅标制作工作曲线,用浓硝酸取代溴-硝酸进行消解,使有机铅变成无机铅后,用石墨炉原子吸收方法定量测定.此方法操作简单、节省试剂,对测定环境水样中四乙基铅的灵敏度、准确度都有很大提高.该方法的最低检出浓度为0.02μg/L,测量范围为0.1～80μg/L,回收率88%～101%.
통과시쌍류종목시비색법측정사을기연적방법진행개진,이용사을기연표제작공작곡선,용농초산취대추-초산진행소해,사유궤연변성무궤연후,용석묵로원자흡수방법정량측정.차방법조작간단、절성시제,대측정배경수양중사을기연적령민도、준학도도유흔대제고.해방법적최저검출농도위0.02μg/L,측량범위위0.1～80μg/L,회수솔88%～101%.
In this paper, Visual dithizone cdofimetric assay method of tetraethyl lead has been improved. The working curve was produced with the tetraethyl lead standard solution. Organic lead was translated into inorganic lead by using G. R nitric acid to digest instead of bromine nitric acid .The concentration of inorganic lead was quantitatively determined by graphite furnace atomic absorption method. This method which improved the sensitivity and the accuracy greatly in environmental sample was simple to execute. The minimum detection concentration was 0.02 μg/L, measuring range was 0.1～80μg/L and the recoveries were 88%～101%.