Towards a GC-based microsystem for benzene and 1,3 butadiene detection: Pre-concentrator characterization

被引：16

作者：

Lahlou, H. ^{[1
]}

Sanchez, J. -B. ^{[2
]}

Vilanova, X. ^{[1
]}

Berger, F. ^{[2
]}

Correig, X. ^{[1
]}

Fierro, V. ^{[3
]}

Celzard, A. ^{[3
]}

机构：

[1] Univ Rovira & Virgili, Dept Engn Elect Elect & Automat, Tarragona 43007, Spain

[2] Univ Franche Comte, Lab Chim Phys & Rayonnements, UMR CEA UFR ST E4, F-25000 Besancon, France

[3] CNRS Nancy Univ UPV Metz, ENSTIB, Inst Jean Lamour, Dept Chim & Phys Solides & Surfaces 2, F-88051 Epinal 9, France

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2011年 / 156卷 / 02期

关键词：

Gas pre-concentrator; Benzene; 1,3 Butadiene; Gas chromatography; Metal oxide gas sensor; Selective detection; ORGANIC-COMPOUNDS; VAPOR MIXTURES; SENSOR ARRAY; GAS SENSORS; RECOGNITION; AIR; SELECTIVITY; DEVICE; LIMITS;

D O I：

10.1016/j.snb.2011.02.018

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The performance of a gas pre-concentrator/gas chromatographic column/gas sensor system was studied step by step towards benzene vapor in presence of 1,3 butadiene vapor. The pre-concentrator, based on an activated carbon of high adsorption capacity, was first characterized using a GC/FID system. By this way, the adsorption capacity of each pollutant was evaluated, first separately, then mixed with different proportions in air. It was shown that the affinity of the pre-concentrator for benzene was higher than for butadiene. Once the optimal pre-concentration parameters were adjusted, we replaced the FID detector by a metal oxide gas sensor. The use of such gas pre-concentrator allowed decreasing the detection limit of the system towards benzene in presence of butadiene by at least ten times. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：680 / 688

页数：9

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