公开(公告)号：US5348645A

公开(公告)日：1994-09-20

申请号：US942117

申请日：1992-09-08

申请人： Steven M. Maggard ,  William T. Welch

发明人： Steven M. Maggard ,  William T. Welch

IPC分类号： G01N21/35 ,  G01N33/28 ,  C10G45/00

CPC分类号： G01N21/359 ,  G01N21/3577 ,  G01N33/287 ,  Y10S208/01 ,  Y10T436/10 ,  Y10T436/117497 ,  Y10T436/12 ,  Y10T436/212

摘要： Mid-distillate hydrocarbon fuels, preferably having initial boiling points above 350.degree. F., are separated e.g. by prep-HPLC into non-aromatic and aromatic fractions which are used to set 0% aromatics (the non-aromatics) and 100% aromatics (the aromatics) on an NIR spectrophotometer. From NIR aromatic band absorbances of unknown samples, their percent aromatics is determined using this two-point calibration and the Beer-Lambert equation. Preferred NIR bands of 1650-1700 and 2120-2256 exhibit excellent correlation with aromatics content. Also similar techniques measure sulfur through correlation with the benzothiophenic band and its overtones and combination bands, or possibly directly.

摘要翻译： 优选具有高于350°F的初始沸点的中馏分碳氢化合物燃料被分离。 通过制备HPLC进入用于在NIR分光光度计上设置0％芳族化合物（非芳族化合物）和100％芳族化合物（芳族化合物）的非芳族和芳族级分。 从未知样品的NIR芳族带吸光度，使用这种两点校准和Beer-Lambert方程确定其百分比芳族化合物。 1650-1700和2120-2256的优选NIR带表现出与芳族化合物含量的极好相关性。 类似的技术也可以通过与苯并噻吩带及其泛音和组合带，或可能直接相关来测量硫。