共 26 条
Needle-trap device for the sampling and determination of chlorinated volatile compounds
被引:18
作者:
Dobrzynska, Elzbieta
[1
,2
]
Buszewski, Boguslaw
[2
]
机构:
[1] Natl Res Inst, Cent Inst Labour Protect, Dept Chem Aerosol & Biol Hazards, Warsaw, Poland
[2] Nicholas Copernicus Univ, Fac Chem, Dept Environm Chem & Bioanalyt, PL-87100 Torun, Poland
关键词:
Chlorinated compounds;
Carbopack X;
Carboxen;
1000;
Needle trap;
Tenax TA;
ORGANIC-COMPOUNDS;
GAS-CHROMATOGRAPHY;
AQUEOUS SAMPLES;
SOLID-PHASE;
MICROEXTRACTION TRAP;
CARBON NANOTUBES;
EXTRACTION;
SORBENT;
SITE;
AIR;
D O I:
10.1002/jssc.201300571
中图分类号:
O65 [分析化学];
学科分类号:
070302 ;
081704 ;
摘要:
A needle-trap device, with immobilized sorbent inside the syringe, coupled with GC-MS was applied for air sampling and determination of chlorinated volatile organic compounds such as dichloromethane, trichloromethane, and tetrachloromethane. The application of a needle trap packed with combination of three sorbents including Tenax TA, Carbopack X, and Carboxen 1000 resulted in detection limits of few pg for chlorinated volatile compounds and recoveries of 99.2-102.8%. The extraction and desorption parameters were optimized within the study. As a result, the precision determined as RSD was equal to 5.05 and 3.03 and 6.52% for dichloromethane, trichloromethane, and tetrachloromethane, respectively. The storage time for chlorinated compounds up to 48 h and reusability of the needle-trap device were verified. The obtained results have proved the ability of needle traps to compete with other solventless sampling and sample preparation extraction techniques.
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页码:3372 / 3378
页数:7
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