氨化学电离色谱-质谱法分析原油及岩石抽提物中的咔唑类含氮化合物  

Determination and quantification of carbazoles in crude oil and rock extracts by ammonia chemical ionization GC-MS

作　　者：史权[1] 朱雷[2] 朱丹[2] 王春江[2] 王铁冠[2] 

机构地区：[1]石油大学重质油国家重点实验室,北京102200 [2]石油大学资源与信息学院,北京102200

出　　处：《地球化学》2004年第4期395-399,共5页Geochimica

摘　　要：利用色谱氨化学电离质谱(GC-NH3CIMS)法分析了原油及烃源岩中的咔唑类含氮化合物,分析结果与普通色谱质谱(GC-MS)进行了对比与评价。结果表明,氨化学电离质谱法对含氮化合物具有较高的灵敏度和选择性,在氮化物含量较低或有芳烃共逸出的情况下,可以进行定量分析。氨化学电离质谱没有碎片离子产生,质量色谱图上同系物间没有碎片离子产生的相互干扰,定量结果比较准确。Carbazoles in oils and rocks were identified and quantified by mea ns of gas chromatograph and ammonia chemical ionization mass spectrometry (GC-N H3CIMS). NH3CIMS, compared with EI mass spectrometry, has higher sensitivity and selectivity on nitrogen compounds which usually interfered by polyaromatics. Ni trogen compounds could be quantified exactly even if with poor purity or lower c oncentration. There were not fragments produced in NH3CIMS condition, and theref ore, the quantification of carbazole compounds were not interfered by their larg er molecular homologues.

关 键 词：氮化物 咔唑 色谱 质谱 氨 化学电离 

分 类 号：P599[天文地球—地球化学] P593[天文地球—地质学]