摘要
建立了微波消解-石墨炉原子吸收法测定汽油中铅的方法。采用微波消解的方法对样品进行前处理,酸消解体系为硝酸,在特定的消解程序下对样品进行消解,经过排酸,用石墨炉原子吸收法测定铅。在浓度范围0~50μg/L时呈现良好的线性,相关系数为0.9990,相对标准偏差为:0.9%,方法的检出限为:0.162μg/L。运用所建立的方法对1个汽油样品及铅含量标准样品中的铅含量进行检测,结果显示该方法选择性强、灵敏度高,前处理方法简单、快速、安全,适合汽油中铅的测定。
A new method for the determination of Pb in gasoline by microwave digestion-GF-AAS.Microwave digestion has been used,HNO3has been used as digestion reagents,and digested at the special procedures,then released the acid,at last,the GF-AAS has been used to detectPb.The absorption of Pb showed a good linear relationship within the range from 0μg/L to 50μg/L with a linear correlation coefficient of 0.9990,with a relative standard deviations at 0.21%.The limit of detection(LOD)is 0.162μg/L.To detected 1 cements and a standard sample,the results showed this method is suitable for detection of Pb in gasoline,in cements with high selectivity and sensitivity,and the pretreatment is simple,fast and safety.
作者
李颖
陈朋云
王坤
Li Ying;Chen Pengyun;Wang Kun(Dali Quality and Technical Supervision Comprehensive Inspection Center Dali 671000 China)
出处
《云南化工》
CAS
2019年第7期54-55,57,共3页
Yunnan Chemical Technology
