6533b838fe1ef96bd12a3a5a
RESEARCH PRODUCT
Flow injection near-infrared determination of ethanol in chloroform
Migue De La GuardiaEmilio López-anreusSalvador Garriguessubject
Detection limitAbsorbancechemistry.chemical_compoundEthanolChloroformchemistryReference sampleNear-infrared spectroscopyAnalytical chemistryAlcoholBiochemistryDirect flowdescription
A simple and direct flow injection (FIA) procedure has been developed for the determination of the stabilizing agent ethanol in chloroform samples. The procedure is based on the use of the absorbance band of ethanol in the near-infrared (NIR) region at 2272 nm, measured in front of a reference sample of chloroform stabilized with amylene. The method developed provides a limit of detection of 0.0045% (v/v) and a dynamic range until 10% (v/v) with a typical variation coefficient of 0.4% for six independent analysis of a real sample containing approximately 1% (v/v) of ethanol. The sample injection frequency allowed by the method is 78 h−1.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1995-01-01 | Fresenius' Journal of Analytical Chemistry |