发明授权
- 专利标题： Determination of aromatics in hydrocarbons by near infrared spectroscopy
- 专利标题（中）： 通过近红外光谱测定烃类中的芳烃
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申请号： US839982申请日： 1992-02-20
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公开(公告)号： US5370790A公开(公告)日： 1994-12-06
- 发明人: Steven M. Maggard , William T. Welch
- 申请人： Steven M. Maggard , William T. Welch
- 申请人地址： KY Ashland
- 专利权人： Ashland Oil, Inc.
- 当前专利权人： Ashland Oil, Inc.
- 当前专利权人地址： KY Ashland
- 主分类号： G01N21/35
- IPC分类号： G01N21/35 ; G01N33/28 ; C10G45/00
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 excel lent correlation with aromatics content.
公开/授权文献
- US4120553A Plug housing for multipolar plug connectors 公开/授权日：1978-10-17
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