Supercritical fluid extraction coupled directly with Fourier transform infrared spectrometry

Taylor, Larry T.; Jordan, Sheri L.

doi:10.1016/0021-9673(95)00124-6

Cited by 14 publications

(4 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Taylor and Jordan (378) reviewed SFE/IR, including applications to the evaluation of textile fiber finishes. Wang and Marshall evaluated SFE coupled with atomic absorption spectrometry for the determination of metals in the subnanogram to low-picogram range (379).…”

Section: Sfe-coupled Techniquesmentioning

confidence: 99%

Supercritical Fluid Chromatography and Extraction

1996

View full text Add to dashboard Cite

Section: Sfe-coupled Techniquesmentioning

confidence: 99%

Supercritical Fluid Chromatography and Extraction

1996

View full text Add to dashboard Cite

“…The weak Fermi resonance bands observed for supercritical fluid carbon dioxide at approximately 2070, 1944 cm 21 and 1400-1200 cm 21 do not provide a source of interference for the IR determination of hydrocarbons. The principles and applications of combined online SFE-FTIR have been reviewed 7,8 and one such study 9 has described the analysis of TPH in soil with this technique.…”

Section: Introductionmentioning

confidence: 99%

Analysis of oil in water at the low ppm level using direct supercritical fluid extraction coupled on-line with infrared spectroscopy

Minty¹,

Ramsey²,

Davies³

et al. 1998

Anal. Commun.

View full text Add to dashboard Cite

The continued development of direct aqueous SFE instrumentation has enabled the on-line SFE-FTIR analysis of automobile diesel in water at the low ppm level. The integrated system requires minimum sample handling stages with analysis of a 500 ml water sample being completed within 15 min. Diesel-spiked water samples provide a linear response for absorbance values measured at 2932 cm 21 (n asymmetric CH 3 ), through the range 17.2-137.6 ppm. Method accuracy for determining spiked diesel concentrations within this range was greater than 85% with RSD 3-8.6% (n = 4 for each set of spiked calibration standards). The technique allows analyses to be performed with samples containing high levels of particulates and is also suitable for the determination of volatile aromatics and hydrocarbons. The detection limits for benzene and n-decane are 17.6 and 4 ppm, respectively.

show abstract

“…9 Consequently, a variety of analytical procedures working on-line with SFE have been successfully developed for several applications. [10][11][12][13][14][15] Thus, Berg et al studied the 'on-line' determination of fat in foods and examined the separation and quantification of edible fat components using SFE coupled on-line with SFC. 16 Also, Liescheski coupled infrared spectroscopic detection on-line with SFE to determine the total lipid content in milled rice flours.…”

Section: Introductionmentioning

confidence: 99%

Determination of fat in leather by the use of supercritical fluid extraction combined with on-line piezoelectric detection

Manganiello

Marsal

Ríos

et al. 2001

Analyst

View full text Add to dashboard Cite

Leather samples were prepared and characterized as 'in house' matrix standards for the determination of fat. The Soxhlet standard method was used to establish the reference fat content in every standard sample. Sample homogeneity and stability were examined under specific storing conditions. The materials were subsequently used as matrix standards for the determination of fat in leather samples, using supercritical fluid extraction (SFE) with on-line piezoelectric detection. Real samples were weighed in the extraction SFE thimble, previously loaded with 1 g of diatomaceous earth. A temperature of 45 degrees C and a CO2 fluid density of 0.85 g ml-1 were used for extraction. The linear calibration range thus achieved was 0.001-0.040% m/m total fat (related to the weight of the leather) and the relative standard deviation +/- 3% (n = 11; P = 0.05). The results were compared with those obtained with the Soxhlet method and no significant differences were found.

show abstract

Supercritical fluid extraction coupled directly with Fourier transform infrared spectrometry

Cited by 14 publications

References 13 publications

Supercritical Fluid Chromatography and Extraction

Supercritical Fluid Chromatography and Extraction

Analysis of oil in water at the low ppm level using direct supercritical fluid extraction coupled on-line with infrared spectroscopy

Determination of fat in leather by the use of supercritical fluid extraction combined with on-line piezoelectric detection

Contact Info

Product

Resources

About