Determination of barbiturates in plasma by gas chromatography-flame photometric detector after N,N′-dimethylthiomethyl derivatization

1986 ◽  
Vol 9 (3) ◽  
pp. 131-138 ◽  
Author(s):  
Yung Hyun Cho ◽  
Man Ki Park
1973 ◽  
Vol 56 (2) ◽  
pp. 333-337 ◽  
Author(s):  
Linwood D Haines ◽  
Irving L Adler

Abstract Residues of ethylene thiourea on food crops are determined by extracting the sample with methanol, partially purifying the extract on an alumina column, and derivatizing the ethylene thiourea extracted with 1-bromobutane in the presence of dimethylformamide and sodium borohydride. The resulting derivative is measured by gas chromatography, using a flame photometric detector. The method is suitable for routine use and is sensitive to 0.01 ppm.


1983 ◽  
Vol 6 (2) ◽  
pp. 103-108
Author(s):  
Kyoung Ho Kim ◽  
Yung Hyun Cho ◽  
Man Ki Park ◽  
Wang Kyu Lee

Eisei kagaku ◽  
1987 ◽  
Vol 33 (2) ◽  
pp. 149-152 ◽  
Author(s):  
EINOSUKE TANAKA ◽  
TAKAKO NAKAMURA ◽  
MASARU TERADA ◽  
SHOGO MISAWA ◽  
YASUO SUZUKI ◽  
...  

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