Tetrasubstituted Sulphonated Aluminum Phthalocyanine-Cat ionic Surfactant System for Fluorimetric Determination of Ethanol in Alcoholic Beverage
- VernacularTitle:四磺基铝酞菁-阳离子表面活性剂体系应用于白酒中乙醇含量的测定
- Author:
Xinqi ZHAN
;
Donghui LI
;
Qingzhi ZHU
;
Hong ZHENG
;
Jingou XU
- Publication Type:Journal Article
- From:
Chinese Journal of Analytical Chemistry
2001;29(6):710-712
- CountryChina
- Language:Chinese
-
Abstract:
A new fluorimetric method was developed for the determi nation of ethanol in alcoholic beverage. The method is based on the principle that tetrasubstituted sulphonated aluminum phthalocyanine (AlS4Pc), a red-r egion fluorescent reagent, is induced to associate in the presence of cationic s urfactant, cetyltrimethylammonium bromide (CTMAB), thus its fluorescence is quen ched, and then the aggregate is disaggregated by the a ddition of ethanol and the fluorescence is recovered. This method has a linear determination range of 0.5%～90.0%(V/V), the detection limit is 0.48%(V /V). The method has been used to determine real alcoholic beverage samples w ith satisfactory results.
