Optimization of headspace solid-phase microextraction by means of an experimental design for the determination of methyl tert.-butyl ether in water by gas chromatography-flame ionization detection
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作者:
Dron, J
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Univ Basque Country, Fac Quim, Dept Quim Aplicada, San Sebastian 20080, SpainUniv Basque Country, Fac Quim, Dept Quim Aplicada, San Sebastian 20080, Spain
Dron, J
[1
]
Garcia, R
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Univ Basque Country, Fac Quim, Dept Quim Aplicada, San Sebastian 20080, SpainUniv Basque Country, Fac Quim, Dept Quim Aplicada, San Sebastian 20080, Spain
Garcia, R
[1
]
Millán, E
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Univ Basque Country, Fac Quim, Dept Quim Aplicada, San Sebastian 20080, SpainUniv Basque Country, Fac Quim, Dept Quim Aplicada, San Sebastian 20080, Spain
Millán, E
[1
]
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[1] Univ Basque Country, Fac Quim, Dept Quim Aplicada, San Sebastian 20080, Spain
A procedure for determination of methyl tert.-butyl ether (MTBE) in water by headspace solid-phase microextraction (HS-SPME) has been developed. The analysis was carried out by gas chromatography with flame ionization detection. The extraction procedure, using a 65-mum poly(dimethylsiloxane)-divinylbenzene SPME fiber, was optimized following experimental design. A fractional factorial design for screening and a central composite design for optimizing the significant variables were applied. Extraction temperature and sodium chloride concentration were significant variables, and 20 degreesC and 300 g/l were, respectively chosen for the best extraction response. With these conditions, an extraction time of 5 min was sufficient to extract MTBE. The calibration linear range for MTBE was 5-500 mug/l and the detection limit 0.45 mug/l. The relative standard deviation, for seven replicates of 250 mug/l MTBE in water, was 6.3%. (C) 2002 Elsevier Science B.V. All rights reserved.
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Univ Nebraska, Sch Nat Resources Sci, Water Sci Lab, Water Ctr, Lincoln, NE 68583 USAUniv Nebraska, Sch Nat Resources Sci, Water Sci Lab, Water Ctr, Lincoln, NE 68583 USA
Cassada, DA
Zhang, Y
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Univ Nebraska, Sch Nat Resources Sci, Water Sci Lab, Water Ctr, Lincoln, NE 68583 USAUniv Nebraska, Sch Nat Resources Sci, Water Sci Lab, Water Ctr, Lincoln, NE 68583 USA
Zhang, Y
Snow, DD
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Univ Nebraska, Sch Nat Resources Sci, Water Sci Lab, Water Ctr, Lincoln, NE 68583 USAUniv Nebraska, Sch Nat Resources Sci, Water Sci Lab, Water Ctr, Lincoln, NE 68583 USA
Snow, DD
Spalding, RF
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Univ Nebraska, Sch Nat Resources Sci, Water Sci Lab, Water Ctr, Lincoln, NE 68583 USAUniv Nebraska, Sch Nat Resources Sci, Water Sci Lab, Water Ctr, Lincoln, NE 68583 USA
机构:
Univ Nebraska, Sch Nat Resources Sci, Water Sci Lab, Water Ctr, Lincoln, NE 68583 USAUniv Nebraska, Sch Nat Resources Sci, Water Sci Lab, Water Ctr, Lincoln, NE 68583 USA
Cassada, DA
Zhang, Y
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Univ Nebraska, Sch Nat Resources Sci, Water Sci Lab, Water Ctr, Lincoln, NE 68583 USAUniv Nebraska, Sch Nat Resources Sci, Water Sci Lab, Water Ctr, Lincoln, NE 68583 USA
Zhang, Y
Snow, DD
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Univ Nebraska, Sch Nat Resources Sci, Water Sci Lab, Water Ctr, Lincoln, NE 68583 USAUniv Nebraska, Sch Nat Resources Sci, Water Sci Lab, Water Ctr, Lincoln, NE 68583 USA
Snow, DD
Spalding, RF
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Univ Nebraska, Sch Nat Resources Sci, Water Sci Lab, Water Ctr, Lincoln, NE 68583 USAUniv Nebraska, Sch Nat Resources Sci, Water Sci Lab, Water Ctr, Lincoln, NE 68583 USA