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isobutanol/dichloromethane
Veza se sprema u međuspremnik
3 rezultati
Quantification of endogenous aliphatic alcohols in serum and urine.
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The endogenous aliphatic alcohols ethanol, n-propanol, n-butanol, isobutanol and isopentanol in serum and urine were measured by gas chromatography-mass fragmentography. Whereas for the higher-molecular-weight alcohols extraction with dichloromethane is used, ethanol is determined by direct
[Determination of residual solvents in 7-amino-3-chloro cephalosporanic acid by gas chromatography].
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OBJECTIVE
To develop a gas chromatography method for determination of residual solvents in 7-amino-3-chloro cephalosporanic acid (7-ACCA).
METHODS
The residual levels of acetone, methanol, dichloromethane, ethyl acetate, isobutanol, pyridine and toluene in 7-ACCA were measured by gas chromatography
Volatile chemicals identified in extracts from newly hybrid citrus, dekopon (Shiranuhi mandarin Suppl. J.).
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Extracts from the peel and flesh of a citrus fruit, dekopon (Shiranuhi mandarin Suppl. J.), were obtained under reduced pressure followed by dichloromethane extraction. A total of 127 volatile chemicals were identified in the extracts using gas chromatography (GC) and gas chromatography-mass
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