Niobium(V) oxide coated on thin glass-ceramic rod as a solid phase microextraction fiber

被引：19
作者：
de Oliveira, AF
da Silveira, CB
de Campos, SD
de Campos, EA
Carasek, E [1 ]
机构：
[1] Univ Fed Santa Catarina, Dept Quim, BR-88040900 Florianopolis, SC, Brazil
[2] Univ Estadual Oeste Parana, Ctr Ciencias Exatas & Tecnol, BR-85903000 Toledo, PR, Brazil
来源：
TALANTA | 2005年 / 66卷 / 01期
关键词：
gas chromatography; solid phase microextraction; niobium(V) oxide coating; alcohol; phenol;
D O I：
10.1016/j.talanta.2004.09.028
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The efficiency of niobium(V) oxide as a sorbent phase for solid phase microextraction (SPME) was investigated. The thin glass-ceramic rod was coated with niobium(V) oxide using chemical vapor deposition and Nb2O5 as a chemical precursor. Optimum conditions for the preparation and conditioning of the fibers are presented. The fibers were used for the extraction of a mixture of alcohols and a mixture of phenols from the headspace samples. The results obtained proved the suitability of niobium(V) oxide as a new SPME fiber. The calibration graphs for alcohols and phenols in a concentration range of 50-1000 mu g l(-1) were linear (r > 0.995) and the detection limits were below 0.8 mu g l(-1) level. The repeatability for one fiber (n = 6) under similar conditions was between 3 and 10.4%. The fiber-to-fiber reproducibility (n = 6) was between 5 and 15%. (c) 2004 Elsevier B.V. All rights reserved.
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收藏
页码：74 / 79
页数：6
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