摘要
报道了用火焰原子吸收光谱法测定裂解汽油中铅的方法。用碘 二甲苯溶液对汽油进行氧化处理,用稀硝酸进行萃取,萃取后浓缩液用原子吸收光谱法进行测定。铅含量在0～7.0μg·ml-1范围内符合比耳定律。对汽油样品进行分析时,相对标准偏差小于3.95%,对样品进行加标回收试验,回收率为97.7%～101.7%,方法的精密度和准确度良好。
The oil sample is oxidized with xylene solution of iodine, and lead is extracted into aqueous solution with dilute nitric acid, in which lead is determined by FAAS. Working conditions of instrument were described. Linear relationship between absorbance and concentration of lead was obtained in the range of 0～7.0μg·ml^(-1). In the analysis of oil samples, RSD′s of less than 3.95% were obtained, and recoveries were in the range of 97.7%～101.7%.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2004年第9期527-528,530,共3页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
