摘要
本文研究了 GB/ T 80 2 0汽油中铅含量的测定方法 (原子吸收光谱法 ) ,对该方法使用的溶剂进行了改进 ,在用 MIBK稀释油样时 ,添加冰醋酸能更好地改善火焰燃烧性、降低背景、提高方法的灵敏度和溶剂体系的稳定性。经试验 ,冰醋酸的加入量以 5 %为宜。该法在实际运用中使标样的稳定时间明显延长 ,收到良好测定的效果。
The method of determining the content of lead in unleaded gasoline (GB/T8020) by flame atomic absorption is discussed and the solvent is improved. At the time of diluting sample by MIBK, adding glacial acetic acid can make flame combustibility better, cut down background, and improve the sensitivity of the method and the stability of solvent system. Testing proves adding 5% glacial acetic acid is suitable. The improved method can make the stable time of standard sample longer and achieve good result.
出处
《光谱实验室》
CAS
CSCD
2000年第2期199-203,共5页
Chinese Journal of Spectroscopy Laboratory
