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Synthesis, structural determination, and biological activity of new 7-hydroxy-3-pyrazolyl-4H-chromen- 4-ones and their o-b-D-glucosides
Chromones pyrazoles glucopyranosyl bromide glucosylation
2010/10/15
A convenient route to synthesize some new medicinally important 7-hydroxy-3-pyrazolyl chromones (3a-i) is described. The interaction of 7-hydroxy-3-formyl chromone (1) with various substituted acetoph...
Application of a Three-Stage Sequential Extraction Procedure for the Determination of Extractable Metal Contents in Highway Soils
Sequential extraction heavy metals highway soils enrichment flame atomic absorption spectrometry
2010/4/21
A sequential extraction procedure, a three-step protocol proposed by the Standards, Measurements and Testing programme (SM & T--formerly BCR) of the European Union, was applied to soil samples for the...
Spectrophotometric Determination of Trace Phosphate Ions by Amplitude-Modulated Flow Analysis Coupled with Malachite Green Method
Spectrophotometric Determination Trace Phosphate Ions
2010/9/14
An amplitude-modulated flow analysis coupled with lock-in detection is proposed for the determination of trace phosphate. The flow rate FS of sample solution is varied in response to a periodic signal...
Role of a Binary Metallic Modifier in the Determination of Cadmium in Graphite Furnace Atomic Absorption Spectrometry
Binary Metallic Modifier Determination of Cadmium Graphite
2010/9/14
In order to discuss the matrix modifier effect of palladium, iron, and a mixture of palladium and iron for the determination of cadmium in graphite-furnace atomic absorption spectrometry (GF-AAS), we ...
Simultaneous Determination of Albendazole and Praziquantel by Second Derivative Spectrophotometry and Multivariated Calibration Methods in Veterinary Pharmaceutical Formulation
Simultaneous Determination of Albendazole Praziquantel Multivariated Calibration Methods Veterinary Pharmaceutical Formulation
2010/9/15
The simultaneous determination of albendazole (ABZ) and praziquantel (PZQ) was performed by different mathematical approaches: second derivative spectrophotometry (SDS), classical least squares, regre...
Rapid and Simultaneous Determination of Tetrafluoroborate, Thiocyanate and Hexafluorophosphate by High-Performance Liquid Chromatography Using a Monolithic Column and Direct Conductivity Detection
Rapid Simultaneous Determination Tetrafluoroborate
2010/9/15
A method was developed for fast and simultaneous determination of tetrafluoroborate (BF4−), thiocyanate (SCN−) and hexafluorophosphate (PF6−) by high-performance liquid chromatograph...
Collection of Indonaphthol Blue on a Membrane Filter for the Spectrophotometric Determination of Ammonia with 1-Naphthol and Dichloroisocyanurate
Collection Indonaphthol Blue Membrane Filter
2010/9/14
In order to determine ammonium ion in water samples, we propose a method based on the Berthelot reaction of ammonia with 1-naphthol and dichloroisocyanurate to form an indophenol blue derivative and c...
Voltammetric Determination of Ferulic Acid by Didodecyldimethylammonium Bromide/Nafion Composite Film-modified Carbon Paste Electrode
Voltammetric Determination Ferulic Acid Didodecyldimethylammonium Bromide
2010/9/15
A simple and rapid method for the determination of ferulic acid in pharmaceutical formulations by didodecyldimethylammonium bromide (DDAB)/Nafion composite film-modified carbon paste electrode is pres...
Chemiluminescent ELISA for the BTEX Determination in Water and Soil
Chemiluminescent BTEX Determination Water and Soil
2010/9/14
An indirect competitive chemiluminescence enzyme-linked immunosorbent assay (CL-ELISA) for the determination of benzene, toluene, ethylbenzene, and ortho-, meta-, para-xylenes (BTEX) in soil and water...
Rapid UHPLC Method for Simultaneous Determination of Vancomycin, Terbinafine, Spironolactone, Furosemide and Their Metabolites: Application to Human Plasma and Urine
Rapid UHPLC Method Simultaneous Determination Vancomycin
2010/9/14
The ultra high performance liquid chromatography (UHPLC)-UV method for the simultaneous determination of furosemide, saluamine (furosemide metabolite), spironolactone, carnenone (spironolactone active...
Determination of Fatty Acids in Human Sweat during Fasting Using GC/MS
Determination Fatty Acids Human Sweat during Fasting GC/MS
2010/9/15
Fatty acids (FAs) are biological molecules that are used as major metabolic fuels, and are concerned in important metabolic processes. We have performed a non-invasive and technically rapid and simple...
Interference elimination studies during the determination of trace elements in cow liver using differential pulse polarography
Liver trace elements determination polarographic
2010/10/14
The liver is known to accumulate many trace elements; thus it is very important to determine their level in a sensitive way. The objective of this study was to develop a simple method for the simultan...
Simultaneous Determination of Antidepressants by Nonaqueous or Quasi-non-aqueous Capillary Electrophoresis
Simultaneous Determination Antidepressants Nonaqueous Quasi-non-aqueous Capillary Electrophoresis
2010/9/13
Simultaneous determinations of 20 antidepressants were carried out by non-aqueous capillary electrophoresis using a background electrolyte consisting of an organic solvent. A bubble cell fused silica ...
Spectrofluorometric Determination of Total Bilirubin in Human Serum Samples Using Tetracycline-Eu3+
Spectrofluorometric Determination Total Bilirubin Human Serum Samples
2010/9/14
The measurement of total bilirubin in serum is one of the most frequently performed tests in clinical analysis. A new spectrofluorometric method was developed for the determination of trace amounts of...
Determination of Water Content in Organic Solvents by Naphthalimide Derivative Fluorescent Probe
Determination Water Content in Organic Solvents Naphthalimide Derivative Fluorescent Probe
2010/9/13
A new fluorescence dye, N-amino-4-(2-hydroxyethylamino)-1,8-naphthalimide (AHN), based on 4-bromo-1,8-naphthalic anhydride was synthesized as a fluorescence probe for determining water content in orga...