DETERMINATION OF UNSULPHONATED QUINOLINE YELLOW IN SOFT DRINKS BY SOLID-PHASE SPECTROPHOTOMETRY

被引：3
|
作者：
CAPITANVALLVEY, LF [1 ]
DEORBE, I [1 ]
LOPEZRODRIGUEZ, S [1 ]
AVIDAD, R [1 ]
机构：
[1] UNIV GRANADA,DEPT ANALYT CHEM,E-18071 GRANADA,SPAIN
来源：
MIKROCHIMICA ACTA | 1995年 / 117卷 / 3-4期
关键词：
QUINOLINE YELLOW DETERMINATION; QUINOLINE YELLOW SPIRIT SOLUBLE DETERMINATION; SOFT DRINKS ANALYSIS; SOLID-PHASE SPECTROPHOTOMETRY;
D O I：
10.1007/BF01244883
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A spectrophotometric method for determination of quinoline yellow spirit soluble (QYSS) in the presence of sulphonated quinoline yellow water soluble (QYWS) in soft drinks at trace levels is reported. The method is based on the fixation of QYSS on C-18 silica gel, followed by measurement of its absorbance at lambda = 418 nm in the solid phase after being packed in a 1-mm cell. The applicable concentration range was 1.5-15.0 ng/ml, the detection limit 0.4 ng/ml and the relative standard deviation 5.2%. The method was applied satisfactorily to the determination of this compound in samples of commercial soft drinks.
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页码：129 / 135
页数：7
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