摘要
采用双缝式原子捕获石英管在火焰原子吸收光谱仪上测定无铅汽油中铅含量 ,探讨了原子捕获的机理 ,研究了捕获的时间乙炔流量等测试条件。试验表明 ,方法的灵敏度比GB/T80 2 0 .6 5～ 6 7- 1998中火焰原子吸收光谱法提高了 4倍 ,能测定无铅汽油中 μg·L-
A double-slotted atomic trapping quartz tube was used in the FAAS determination of lead in nonleaded gasoline. The influences of the time of atomic trapping and the flow rate of acetylene gas were studied. A brief discussion on the mechanism of atomic trapping was also given. It was proved by experimental results, that micro- amounts of lead at the concentration level of μg·L -1 could be determined by the present method, which was found to be about 4 times more sensitive than that of the method mentioned in GB/T8020.65～67-1998.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2002年第10期504-505,508,共3页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
