Determination of polar organic solutes in methanol using hot on-column injection capillary gas chromatography

Lang, Russell F.

doi:10.1021/ac00297a065

Cited by 5 publications

(3 citation statements)

References 19 publications

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“…Gas Chromatography/Mass Spectrometry Confirmation. Gas chromatography/mass spectrometry confirmation of DMSO and DMS02 in sample extracts was performed on a Kratos MS80 instrument using a hot on-column inlet system (25). Full-scan (500-33 amu) El spectra were acquired at 5000 resolution with a scan rate of 0.6 s/decade.…”

Section: Resultsmentioning

confidence: 99%

Determination of dimethyl sulfoxide and dimethyl sulfone in air

Lang¹,

Brown²

1991

Anal. Chem.

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Section: Resultsmentioning

confidence: 99%

Determination of dimethyl sulfoxide and dimethyl sulfone in air

Lang¹,

Brown²

1991

Anal. Chem.

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“…This so-called "solvent effect" results from interaction between the tailing water peak and the solutes being chromatographed [2]. The problem has generally been solved by inserting a length of deactivated, uncoated capillary column-a retention gap-between the injection port and the analytical column.…”

Section: Introductionmentioning

confidence: 99%

“…The problem has generally been solved by inserting a length of deactivated, uncoated capillary column-a retention gap-between the injection port and the analytical column. However, Grob and Laubli concluded that water and methanol are poor solvents for use with the retention gap technique [2], and direct aqueous injection into a retention gap connected to a capillary column has rarely been attempted [3].…”

Section: Introductionmentioning

confidence: 99%

Use of a retention gap for the trace analysis of volatile polar organics at the ppb level by direct aqueous injection

Sung

Shanfield

Zlatkis

et al. 1987

J. High Resol. Chromatogr.

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Short Communications t 066811 0669respond very strongly to methanol (Figure 1 b). The only solvent interference observed was a slight negative response. The first peakwas due to MEK, and this was followed by the elution of THF, acetone, benzene, TCE, and MIBK. Only the THF peak was affected by this negative perturbation. With a thick-film Carbowax column the methanol coeluted with both MEK and THF and obscured both peaks.All components of the test mixture with the exception of acetone could be determined atthe 1 -ppm level using on-column injection of methanol solutions and a PID. Acetone could be determined in methanol at the 10-ppm level. Figure 1 Chromatograms for methanol solutions of volatile polar organics obtainedusinganFlD(a)anda PID(b).Thesamplecontained 1 ppmeach of acetone, MEK, THF, benzene, TCE, and MIBK. One-microliter aliquots were injected into a 50 m X 0.32 mm 0.2 pm Carbowax bonded-phase fused silica capillary column. Results and DiscussionSince the FID responds to methanol, a broad tailing solvent peak was obtained using that detector (Figure la). In contrast, good chromatograms were obtained using the PID because it does not

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Capillary gas chromatographic trace analysis of volatile polar organics using a photoionization detector

Sung

Batten

Zlatkis

et al. 1987

J. High Resol. Chromatogr.

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not with cyclohexane. From these results, the desired properties of suitable secondary solvent seem to be the following: (i) the secondary solvent should have good affinity for the solutes of interest; (ii) a solvent having no affinity for the solutes is also effective if the latter have a good affinity for stationary phase.The secondary solvent technique is a very useful method for overcoming peak distortion. It is applicable to polar solutions and even for water-containing solutions.

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Determination of polar organic solutes in methanol using hot on-column injection capillary gas chromatography

Cited by 5 publications

References 19 publications

Determination of dimethyl sulfoxide and dimethyl sulfone in air

Determination of dimethyl sulfoxide and dimethyl sulfone in air

Use of a retention gap for the trace analysis of volatile polar organics at the ppb level by direct aqueous injection

Capillary gas chromatographic trace analysis of volatile polar organics using a photoionization detector

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