Quantitative gas chromatography without analyte identification by ultrasonic detection

Skogerboe, Kristen J.; Yeung, Edward S.

doi:10.1021/ac00278a014

Cited by 9 publications

(4 citation statements)

References 21 publications

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“…The ultrasonic velocity has even been used as detection system in gas chromatography, where it behaves as a universal detector [70] with a wide dynamic range (six orders of magnitude) [71], but a poor detection limit (in the ng range) [72]. Nevertheless [73].…”

Section: Use Of Ultrasound In and As Detection Systemsmentioning

confidence: 99%

Analytical sonochemistry: a review

Linares

Lázaro

Castro

et al. 1988

Journal of Analytical Methods in Chemistry

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observed that the procedure involving ultrasound gave higher yields after 5 min exposure than it did with longer exposures of 10 to 15 min; this fact could be the result of degradation increasing with exposure time.Regarding the extraction of inorganic species, ultrasonic exposure of cations from soil using diluted HNO, has been studied and compared with conventional shaking methods. The concentration of extracted cations is independent of the intensity of the ultrasonic radiation and dependent upon the reaction temperature and irradiation time. The time needed is always shorter than that required by shaking methods; and the reproducibility of the results depends on the ease with which the temperature can be controlled. Extraction of cationic species from plants by use of HC1 and ultrasound, with atomic absorption spectrometry or flame emission detection is more accurate than the dry ashing method [11]. A major improvement in the extraction of phosphate raw materials and P-containing fertilizers is achieved when ultrasound rather than mechanical mixing is used [12].

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Section: Use Of Ultrasound In and As Detection Systemsmentioning

confidence: 99%

Analytical sonochemistry: a review

Linares

Lázaro

Castro

et al. 1988

Journal of Analytical Methods in Chemistry

View full text Add to dashboard Cite

show abstract

“…With the present limitation of standard analytical methodology in mind, an approach for confident calibration in off-line HPLC was introduced by Yeung and co-workers (15)(16)(17)(18)(19)(20)(21), referred to as solute independent calibration (SICAL).…”

Section: Introductionmentioning

confidence: 99%

“…The method was first described for refractive index detection (15). Other areas for application of the method include, size exclusion chromatography with refractive index detection (17), IC with absorbance detection (18), microbore HPLC with optical activity detection (19), and gas chromatography with ultrasonic detection (20). Thus, the future of applying the SICAL method Figure 1.…”

Section: Introductionmentioning

confidence: 99%