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

Towards a GC-based microsystem for benzene and 1,3 butadiene detection: Pre-concentrator characterization
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用于苯和 1,3 丁二烯检测的基于 GC 的微系统:预浓缩器表征

DOI:
10.1016/j.snb.2011.02.018
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发表时间:
2011
影响因子:
8.4
通讯作者:
A. Celzard
A. Celzard
中科院分区:
化学1区
文献类型:
--
作者:
H. Lahlou;Jean;X. Vilanova;F. Berger;X. Correig;V. Fierro;A. Celzard

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研究了在1,3丁二烯蒸气存在下,气体预浓缩器/气相色谱柱/气敏传感器系统对苯蒸气的性能。该预浓缩器基于高吸附容量的活性碳,首次使用GC/FID系统进行了表征。通过这种方法,先单独评估每种污染物的吸附能力,然后在空气中按不同比例混合。结果表明,预浓缩剂对苯的亲和力高于对丁二烯的亲和力。一旦调整了最佳的预浓缩参数,我们就用金属氧化物气体传感器取代了FID检测器。这种气体预浓缩器的使用使系统对含有丁二烯的苯的检测下限至少降低了十倍。
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.
使用聚合物涂层表面声波传感器阵列分析有机蒸气混合物的最佳涂层选择。
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发表时间: 1995
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