SIMULTANEOUS DETERMINATION OF PESTICIDES BY MULTIVARIATE SPECTRAL-ANALYSIS AND DERIVATIVE SPECTROPHOTOMETRY

被引：41

作者：

ESPINOSAMANSILLA, A

DELAPENA, AM

SALINAS, F

ZAMORO, A

机构：

[1] Departamento de Química Analítica, Universidad de Extremadura

来源：

ANALYTICA CHIMICA ACTA | 1992年 / 258卷 / 01期

关键词：

SPECTROPHOTOMETRY; CARBARYL; CHLORPYRIFOS; DERIVATIVE SPECTROSCOPY; MULTIVARIATE ANALYSIS; PESTICIDES;

D O I：

10.1016/0003-2670(92)85196-D

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The quantitative predictive abilities of derivative spectral analysis by using the zero-crossing point method are compared with the results obtained by the use of a multivariate calibration method. Mixtures of two pesticides (carbaryl and chlorpyrifos) were resolved by application of derivative spectrophotometry. Partial least squares (PLS), a full spectrum calibration method, was also applied with previous optimization of the calibration matrix by the PLS-2 method. Both approaches were satisfactorily applied to the simultaneous determination of carbaryl and chlorpyrifos in commercial formulations. The simplicity of the derivative method makes it the method of choice for simple binary mixtures.

引用

页码：47 / 53

页数：7

共 11 条

[1]

[Anonymous], 1978, SPECTROCHIM ACTA B, V33, P242

[2]

DUBROVKIN IM, 1989, PROBL ANAL KHIM, V9, P50

[3] PARTIAL LEAST-SQUARES METHODS FOR SPECTRAL ANALYSES .1. RELATION TO OTHER QUANTITATIVE CALIBRATION METHODS AND THE EXTRACTION OF QUALITATIVE INFORMATION [J].