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1 pentanol/dichloromethane
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6 rezultātiem
Photophysical Characterization of the Naturally Occurring Dioxobacteriochlorin Tolyporphin A and Synthetic Oxobacteriochlorin Analogues.
Rakstu tulkošanu var veikt tikai reģistrēti lietotāji
Ielogoties Reģistrēties
Tolyporphins are tetrapyrrole macrocycles produced by a cyanobacterium-containing culture known as HT-58-2. Tolyporphins A-J are free base dioxobacteriochlorins, whereas tolyporphin K is an oxochlorin. Here, the photophysical characterization is reported of tolyporphin A and two synthetic analogues,
Quantitative extraction of tubocurarine, gallamine, and decamethonium from biological materials.
Rakstu tulkošanu var veikt tikai reģistrēti lietotāji
Ielogoties Reģistrēties
A procedure is described for quantitative extraction of tubocurarine, gallamine, and decamethonium from blood, urine, and tissue. Ion pairs of the drugs are formed with picric acid and are extracted into a dichloromethane/1-pentanol solvent. Qualitative analysis of the extract is effected using
Ultrasound-assisted extraction of volatile compounds from wine samples: optimisation of the method.
Rakstu tulkošanu var veikt tikai reģistrēti lietotāji
Ielogoties Reģistrēties
This study describes a liquid-liquid extraction technique for extracting volatile compounds from wine using dichloromethane and ultrasounds. This technique permits the simultaneous extraction of different samples with high reproducibility. After the preliminary tests, several parameters (sample
Liquid-chromatographic determination of 4-aminopyridine in serum, saliva, and urine.
Rakstu tulkošanu var veikt tikai reģistrēti lietotāji
Ielogoties Reģistrēties
We have developed "high-performance" liquid-chromatographic methods for determining 4-aminopyridine, an acetylcholine-releasing drug, in serum, saliva, and urine. As little as 1 microgram/L can be detected by extracting the alkalinized sample plus the internal standard (3,4-diaminopyridine) into
Characterization of the most odor-active volatiles of orange wine made from a Turkish cv. Kozan (Citrus sinensis L. Osbeck).
Rakstu tulkošanu var veikt tikai reģistrēti lietotāji
Ielogoties Reģistrēties
The aroma-active compounds of cv. Turkish Kozan orange wine were analyzed by sensory and instrumental analyses. Liquid-liquid extraction with dichloromethane was used for extraction of volatile components. According to sensory analysis, the aromatic extract obtained by liquid-liquid extraction was
Solvent extraction of tricyclic amines from blood plasma and liquid chromatographic determination.
Rakstu tulkošanu var veikt tikai reģistrēti lietotāji
Ielogoties Reģistrēties
The extraction of seven tricyclic antidepressant amines from human plasma at different pH values was investigated for dichloromethane, diethyl ether and hexane--1-pentanol (95:5). The amines were extracted as bases and back-extracted to sulphuric acid, 0.10 mol/l, prior to the separation by
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