摘要
考察了光管温度和尾吹等因素对气相色谱傅里叶变换红外光谱联机检测（ＧＣ／ＦＴＩＲ）的影响。以烷基酚混合物为分析样品，得出了ＧＣ／ＦＴＩＲ操作的最佳条件。光管温度越低，信号强度越高，噪音越低；样品组成不太复杂时，用中粗毛细柱，载气流量在２ｍｌ／ｍｉｎ左右时，可不加尾吹。ＧＣ／ＦＴＩＲ对同分异构体的鉴定比ＧＣ／ＭＳ可靠。通过分析烷基酚混合物，进行谱库检索，鉴定了混合物中的８种化合物，与标准谱图匹配相当好。
The effects of lightpipe temperature,make up gas on the detection sensitivity of gas chromatography/Fourier transform infrared spectroscopy(GC/FTIR)are studied FTIR exhibits a higher signal intensity when lightpipe temperature is set at a lower value The make up gas is not necessary when using middle size capillary column at a flow rate of 2ml/min An application of capillary column GC/FTIR to the separation and identification of alkylphenol mixtures is reported FTIR spectra between isomeres of alkylphenol have significant difference Eight compounds in mixtures are identified by searching Nicolet vapor phase library
出处
《江汉石油学院学报》
EI
CSCD
北大核心
1998年第3期24-27,共4页
Journal of Jianghan Petroleum Institute
关键词
气相色谱
红外光谱法
化学分析
石油
gas chromatogaphy
infrared spectroscopy
chemical analysis
