The simultaneous determination of copper and nickel by liquid-liquid extraction and gas-liquid chromatography with (acetylpivalylmethane)-(trifluoroacetylacetone)ethylenediimine as reagent

1986 ◽  
Vol 180 ◽  
pp. 417-428 ◽  
Author(s):  
O.W. Lau ◽  
W.I. Stephen
Keyword(s):  
Liquid Chromatography ◽  
Simultaneous Determination ◽  
Liquid Extraction ◽  
Gas Liquid Chromatography ◽  
Liquid Liquid Extraction ◽  
Determination Of Copper

Determination of Benzaldehyde in Wines and Amyl Acetate and Isoamyl Acetate in Liqueurs by Gas-Liquid Chromatography and Confirmation by Mass Spectroscopy

1975 ◽  
Vol 58 (3) ◽  
pp. 582-584
Author(s):  
Glenn E Martin ◽  
Peter C Buscemi ◽  
Boyd B Butts
Keyword(s):  
Liquid Chromatography ◽  
Mass Spectroscopy ◽  
Isoamyl Acetate ◽  
Liquid Extraction ◽  
Amyl Acetate ◽  
Alcoholic Beverages ◽  
Gas Liquid Chromatography ◽  
Liquid Liquid Extraction ◽  
Liquid Chromatographic

Abstract Liquid-liquid extraction was carried out prior to gas-liquid chromatographic (GLC) determination of amyl and isoamyl acetate in alcoholic beverages. The concentrations of amyl acetate and isoamyl acetate ranged from 4 to 29 and 2.5 to 322 ppm, respectively. Recovery studies for isoamyl and amyl acetate were carried out; these compounds were recovered at 90 and 92%, respectively. A liquid-liquid extraction also was carried out prior to the GLC determination of benzaldehyde. When chloroform was used in the liquid extraction, the results obtained by the GLC procedure compared favorably in most cases with those obtained by the ultraviolet spectrophotometric procedure. In the GLC method the benzaldehyde varied from 5 to 150 ppm for both imported and natural wines. The compounds in the effluent from the chromatograph, namely, amyl acetate, isoamyl acetate, and benzaldehyde, were confirmed by mass spectroscopy.

scholarly journals Modern modification of the method for determination of organochlorine pesticides in organic vehicles

2017 ◽  
Vol 188 (1) ◽  
pp. 244-250
Author(s):  
Andrey P. Chernyaev ◽  
Ekatherina Yu. Rychkova ◽  
Nickolay B. Kondrikov ◽  
Ekatherina N. Zyk
Keyword(s):  
Liquid Chromatography ◽  
Organochlorine Pesticides ◽  
Total Content ◽  
Liquid Extraction ◽  
Marine Organisms ◽  
New Method ◽  
Gas Liquid Chromatography ◽  
Okhotsk Sea ◽  
Liquid Liquid Extraction

New method for determination of organochlorine pesticides (DDT and its metabolites, HCH and its isomers) is presented. The method includes a liquid-liquid extraction of pesticides under ultrasound and the substance analysis by gas-liquid chromatography. The degree of DDT and γ-HCH extracting from tissues of marine organisms is (78 ± 2) % and (91 ± 2) %, respectively. The total content of organochlorine pesticides in muscles of walleye pollock from the Okhotsk Sea is evaluated by this method in the range from 25 to 73 pg/g of lipids.

Simultaneous Determination of Lactulose and Mannitol in Urine of Burn Patients by Gas-Liquid Chromatography

1992 ◽  
Author(s):  
Ronald L. Shippee ◽  
Avery A. Johnson ◽  
William G. Cioffi ◽  
James Lasko ◽  
Thomas E. LeVoyer
Keyword(s):  
Liquid Chromatography ◽  
Simultaneous Determination ◽  
Gas Liquid Chromatography ◽  
Burn Patients
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