ONLINE PRECONCENTRATION AND FLOW-ANALYSIS FOURIER-TRANSFORM INFRARED DETERMINATION OF CARBARYL

被引：24

作者：

GARRIGUES, S ^{[1
]}

VIDAL, MT ^{[1
]}

GALLIGNANI, M ^{[1
]}

DELAGUARDIA, M ^{[1
]}

机构：

[1] UNIV VALENCIA,DEPT ANALYT CHEM,E-46100 BURJASSOT,SPAIN

来源：

ANALYST | 1994年 / 119卷 / 04期

关键词：

CARBARYL WATER ANALYSIS; FOURIER TRANSFORM INFRARED; SOLID PHASE EXTRACTION; ONLINE ANALYSIS;

D O I：

10.1039/an9941900659

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new strategy to improve the limits of detection in Fourier transform Infrared (FTIR) has been developed. The proposed method consists of preconcentration of samples, using conventional solid phase extraction cartridges, and online elution with dichloromethane. Absorbance measurements are obtained by FTIR. Carbaryl has been used as a test molecule with on-line measurements carried out at 1746 cm(-1). This procedure permits (i) field sampling, (ii) stabilization of pesticides, and (iii) fast determination of carbaryl in the laboratory. The sensitivity obtained with this procedure corresponds to 0.0444 area units mu g(-1) cm(-1), and the limit of detection, to 15 mu g of carbaryl, which, for a sampling volume of 1 l, corresponds to 15 mu g l(-1) of this pesticide. The reproducibility of three independent analyses of a well water sample containing 195 mu g l(-1) of carbaryl corresponds to a relative standard deviation of 8.6%.

引用

页码：659 / 664

页数：6

共 31 条

[1]

ANDREWS JS, 1982, AM LAB, V14, P70

[2] DETERMINATION OF NONVOLATILE ORGANIC-COMPOUNDS IN AQUEOUS ENVIRONMENTAL-SAMPLES USING LIQUID CHROMATOGRAPHY/MASS SPECTROMETRY [J].

BELLAR, TA ;

BUDDE, WL .

ANALYTICAL CHEMISTRY, 1988, 60 (19) :2076-2083

[3] ANALYSIS OF PESTICIDE EXPOSURE PADS USING SELECTIVE ABSORPTION AND ELUTION OF REVERSED-PHASE SOLID SUPPORT [J].

BOGUS, ER ;

GALLAGHER, PA ;

CAMERON, EA ;

MUMMA, RO .

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 1985, 33 (06) :1018-1021

[4] A RAPID METHOD FOR THE SIMULTANEOUS ANALYSIS OF CHLORPYRIFOS, ISOFENPHOS, CARBARYL, IPRODIONE, AND TRIADIMEFON IN GROUNDWATER BY SOLID-PHASE EXTRACTION [J].

BROOKS, MW ;

TESSIER, D ;

SODERSTROM, D ;

JENKINS, J ;

CLARK, JM .

JOURNAL OF CHROMATOGRAPHIC SCIENCE, 1990, 28 (09) :487-489

[5] HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHIC DETERMINATION OF CARBARYL AND 1-NAPHTHOL AT RESIDUE LEVELS IN VARIOUS WATER SOURCES BY DIRECT INJECTION AND TRACE ENRICHMENT [J].

BUSHWAY, RJ .

JOURNAL OF CHROMATOGRAPHY, 1981, 211 (01) :135-143

[6]

BYERS DW, 1991, ENVIRON TOXICOL CHEM, V10, P1425

[7] LITERATURE SURVEY OF THE ONLINE PRECONCENTRATION IN FLOW-INJECTION ATOMIC SPECTROMETRIC ANALYSIS [J].

CARBONELL, V ;

SALVADOR, A ;

DELAGUARDIA, M .

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY, 1992, 342 (07) :529-537

[8] DETERMINATION OF PHENYL ISOCYANATE IN A FLOW-INJECTION SYSTEM WITH INFRARED SPECTROMETRIC DETECTION [J].

CURRAN, DJ ;

COLLIER, WG .

ANALYTICA CHIMICA ACTA, 1985, 177 :259-262

[9] FLOW-INJECTION DERIVATIVE FOURIER-TRANSFORM INFRARED DETERMINATION OF METHYL TERT-BUTYL ETHER IN GASOLINES [J].

DELAGUARDIA, M ;

GALLIGNANI, M ;

GARRIGUES, S .

ANALYTICA CHIMICA ACTA, 1993, 282 (03) :543-550

[10] FLOW-INJECTION FOURIER-TRANSFORM INFRARED SPECTROMETRIC ANALYSIS [J].

DELAGUARDIA, M ;

GARRIGUES, S ;

GALLIGNANI, M ;

BURGUERA, JL ;

BURGUERA, M .

ANALYTICA CHIMICA ACTA, 1992, 261 (1-2) :53-57

← 1 2 3 4 →