荧光光谱法分析煤焦油组分

研究煤焦油组分时,为了防止组分相互之间的干扰,在测定前用几种不同极性的溶剂:石油醚;80%石油醚-20%甲苯;60%石油醚-40%甲苯;40%石滑醚-60%甲苯;20%石油醚-80%甲苯;甲苯;氯仿;50%氟仿-50%甲醇;甲醇进行洗提,从煤焦油中得到9个级分。然后用荧光法从9个级分中鉴定出28个组分:茶、苊、联苯、三甲基酚、菲、异喹啉、芴、对氨基酚、联苯胺、蒽醌、四氢萘、2,5-二甲酚、蒽、咔唑、间苯二酚、二乙基苯胺、喹啉、吲哚醌、1,3,5-三甲苯、1,2,4-三甲苯、萘醌、菲醌、窟、苾、氧芴、1,2-苯并蒽、2,3-苯并蒽、3,4-苯并苾。同时定量了氯仿和甲醇级分中氧芴、(艹屈)、联苯胺、苾、菲、蒽、咔唑、四氢蔡咔、四氢萘、苯醌、喹啉、8-羟基喹啉等12个组分的含量。

Study on Components of Coal Tar by Fluorescence Spectroscopy

For studying components of coal tar in order to minimize interference, before identifying and measuring, nine fractions of coal tar are obtained by sequential elution with nine kinds of solvents, petroleum ether, 80% petroleum ether/20% toluene, 60% petroleum ether/40% toluene, 40% petroleum ether/60% toluene, 20% petroleum ether/80% toluene, toluene, chloroform, 50% chloroform/50% methanol, and methanol. Twenty eight components of coal tar which are naphthaleme, acenaphtheme, diphenyl, trimethylphenol, phenathrene, quinoline, isoquinoline, fluorene, p-aminophenol, benzidine, anthraquinone, anthracene, tetraline, 2, 5-xylenol, carbazole, resorcinol, 2, 6-diethylaniline, isatin, 1, 2, 4-trimethylbenzene, 1, 3, 5-trimethylbenzene, 1, 2-naphthoquinone, phenanthrenequinone, chrysene, pyrene, dibenzofuran, 1, 2-benzanthracene, 2, 3-benzanthracene, and 1, 2-benzpyrene are identified in nine fractions. Twelve components are measured quantitatively in chloroform fraction and methanol fraction.