Simultaneous determination of sorbic and benzoic acids in commercial juices using the PLS-2 multivariate calibration method and validation by high performance liquid chromatography

被引：35
作者：
Lozano, Valeria A.
Camina, Jose M.
Boeris, Maria S.
Marchevsky, Eduardo J.
机构：
[1] Univ Nacl La Pampa, Fac Ciencias Exactas & Nat, Dept Quim, RA-6300 Santa Rosa, La Pampa, Argentina
[2] Univ Nacl San Luis, Fac Quim Bioquim & Farm, Area Quim Analit, RA-5700 Chacabuco Pedernera, San Luis, Argentina
来源：
TALANTA | 2007年 / 73卷 / 02期
关键词：
preservings; juices; benzoic and sorbic acids; PLS-2; method; multivariate calibration; HPLC;
D O I：
10.1016/j.talanta.2007.03.041
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A new method to determine a mixture for preserving sorbic and benzoic acids in commercial juices is proposed. The PLS-2 model was obtained preparing 40 standard solutions adding concentration of sorbic and benzoic acid to filtered natural juices of apple, lemon, orange and grapefruit. The concentration of analytes in the commercial samples was evaluated using the obtained model by UV spectral data. The PLS-2 method was validated by high performance liquid chromatography (HPLC), finding a relative error less than 12% between the PLS-2 and HPLC methods in all cases. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：282 / 286
页数：5
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