摘要
采用中红外光谱法研究了汽油中典型非常规添加物的测定。确定了汽油中较为常见的非常规添加物苯胺、甲缩醛、乙酸仲丁酯的红外光谱峰位置,并在质量浓度0.5~9.0g/L范围内建立了标准校正曲线,质量浓度与吸光度相关性系数均大于0.999,相对标准偏差均小于2.0%,加标回收率在99.38%~101.20%,该方法具有较高的准确度与精密度,单个样品测定仅需3~5min,可以实现汽油中苯胺、甲缩醛、乙酸仲丁酯的快速同时检测。
This study utilizes mid-infrared spectroscopy to determine typical unconventional additives in gasoline.The infrared spectral peak positions for common unconventional additives such as aniline,paraformaldehyde,and iso-butyl acetate in gasoline were established.A standard calibration curve was developed within the concentration range of 0.5 g/L to 9.0 g/L,with correlation coefficients between concentration and absorbance exceeding 0.999 and relative standard deviations below 2.0%.The spiked recovery rate ranged from 99.38% to 101.20%.This method demonstrates high accuracy and precision,with a single sample measurement requiring only 3 to 5 minutes,enabling rapid simultaneous detection of aniline,paraformaldehyde,and iso-butyl acetate in gasoline.
作者
宗玲辉
ZONG Linghui(China Petroleum&Chemical Corporation,Nanjing Branch,Nanjing 210046,Jiangsu,China)
出处
《四川化工》
2025年第2期16-19,共4页
Sichuan Chemical Industry
关键词
中红外光谱法
快速
同时
检测
汽油
苯胺
甲缩醛
乙酸仲丁酯
mid infrared spectroscopy
quickly
at the same time
testing
gasoline
aniline
formaldehyde
sec-butyl acetate
