Improvements in the gas chromatographic determination of trace amounts of aliphatic amines in aqueous solution

Abstract A method has been developed for the detection of aflatoxin Mi in milk. The toxin is extracted with chloroform, the extract is evaporated, and the residue is partitioned between carbon tetrachloride and an aqueous saline-methanol solution. The toxin is once again extracted with chloroform from the methanol solution and analyzed by thin layer chromatography. The limit of detection of Mi in powdered milk is 0.5 μg/ kg; recoveries of added Mj are about 83%. The limit of detection can be improved to 0.3 μg/kg if the plate is sprayed with an aqueous solution of H2S04 after development.

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Collaborative Study of the Gas-Liquid Chromatographic Determination of Sorbitol in Bakery Products

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/56.1.66 ◽

1973 ◽

Vol 56 (1) ◽

pp. 66-67

Author(s):

Harvey K Hundley

Keyword(s):

Aqueous Solution ◽

Acetic Anhydride ◽

Collaborative Study ◽

Chromatographic Determination ◽

Bakery Products ◽

Sugar Alcohols ◽

Flame Ionization ◽

Liquid Chromatographic Determination ◽

Liquid Chromatographic

Abstract A GLC method for the determination of sorbitol has been collaboratively studied. Sugar and sugar alcohols are extracted from the bakery products by methanol and the solvent is evaporated. Acetate derivatives are then formed by addition of acetic anhydride in pyridine, and the derivatives are extracted from an aqueous solution with chloroform and analyzed by flame ionization GLC. Collaborative results show a recovery ranging from 90 to 102% sorbitol from bakery products containing 1.5 to 7% sorbitol. The method has been adopted as official first action.

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Gas Chromatographic Determination of Diethylstilbestrol Dimethyl Ether in Diethylstilbestrol

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/55.1.185 ◽

1972 ◽

Vol 55 (1) ◽

pp. 185-186

Author(s):

F E Gainer ◽

W J Chiasson

Keyword(s):

Aqueous Solution ◽

Dimethyl Ether ◽

Chloroform Solution ◽

Internal Standard ◽

Chromatographic Determination ◽

Detector Response ◽

Chloroform Layer ◽

Internal Standard Peak ◽

Linear Plot

Abstract A GLC method is described for the determination of the dimethyl ether of diethylstilbestrol (DME) in diethylstilbestrol (DES). A 1 g sample of DES is dissolved in an aqueous solution of 0.5N NaOH and then extracted with a chloroform solution containing benefin, the internal standard. An aliquot of the chloroform layer is chromatographed and the DME peak is measured relative to the internal standard peak. The method was tested for accuracy within the 11–110 ppm range and a linear plot of detector response vs. concentration was obtained.

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Gas Chromatographic Determination of Ethyl Alcohol in Blood for Medicolegal Purposes. Separation of Other Volatiles from Blood or Aqueous Solution.

Analytical Chemistry ◽

10.1021/ac60190a013 ◽

1962 ◽

Vol 34 (10) ◽

pp. 1234-1236 ◽

Cited By ~ 34

Author(s):

K. D. Parker ◽

C. R. Fontan ◽

J. L. Yee ◽

P. L. Kirk

Keyword(s):

Aqueous Solution ◽

Ethyl Alcohol ◽

Chromatographic Determination

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Gas-chromatographic determination of aliphatic amines in natural surface water and wastewater

Journal of Analytical Chemistry ◽

10.1134/s1061934808070101 ◽

2008 ◽

Vol 63 (7) ◽

pp. 664-667 ◽

Cited By ~ 7

Author(s):

N. V. Kuz’mina ◽

F. F. Khizbullin ◽

T. Ya. Gadomskii ◽

V. N. Maistrenko

Keyword(s):

Surface Water ◽

Chromatographic Determination ◽

Aliphatic Amines ◽

Natural Surface ◽

Water And Wastewater

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Gas chromatographic determination of amines in aqueous solution

Journal of Chromatography A ◽

10.1016/s0021-9673(01)95154-4 ◽

1964 ◽

Vol 13 ◽

pp. 565-567 ◽

Cited By ~ 9

Author(s):

Yael Arad ◽

Moshe Levy ◽

David Vofsi

Keyword(s):

Aqueous Solution ◽

Chromatographic Determination

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Liquid Chromatographic Determination of Amprolium in Chicken Tissues, Using Post-Column Reaction and Fluorometric Detection

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/69.6.941 ◽

1986 ◽

Vol 69 (6) ◽

pp. 941-943

Author(s):

Tomoko Nagata ◽

Masanobu Saeki

Keyword(s):

Aqueous Solution ◽

Reaction System ◽

Chromatographic Determination ◽

Fluorometric Detection ◽

Alumina Column ◽

Alumina Column Chromatography ◽

Chicken Muscles ◽

Liquid Chromatographic Determination ◽

Liquid Chromatographic

Abstract A method is presented for determination of amprolium residues in chicken muscles by a liquid chromatographic post-column reaction system. The drug is extracted from muscles with methanol, and the extract is concentrated to 3-4 mL. This aqueous solution is rinsed with n-hexane and cleaned up by alumina column chromatography. The drug is separated from the interferences on a LiChrosorb RP-8 column, reacted with ferricyanide in alkaline solution, and quantitated by fluorometric detection at 367 nm (excitation) and 470 nm (emission). Recoveries of amprolium added to chicken muscles at levels of 0.1 and 0.2 ppm were 74.9 and 80.9%, respectively. The detection limit was 1 ng for amprolium standard and 0.01 ppm in chicken muscles.

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