搜索结果: 1-15 共查到“分析化学 spectrophotometric”相关记录16条 . 查询时间(0.093 秒)
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...
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...
Spectrophotometric Determination of Cysteine with Gold Nanoparticles Stabilized with Single-stranded Oligonucleotides
Spectrophotometric Determination Cysteine Gold Nanoparticles Stabilized Single-stranded Oligonucleotides
2010/9/20
A sensitive and selective spectrophotometric detection method for cysteine has been established in this paper. The assay is based on the displacement of single-stranded oligonucleotide (ssDNA) adsorb...
Kinetic Spectrophotometric Determination of Trace Amounts of Iodide in Food Samples
Kinetic Spectrophotometric Determination Trace Amounts Iodide Food Samples
2010/9/20
A simple, selective and sensitive kinetic method has been developed for the determination of trace amounts of iodide. This method is based on a catalytic effect of iodide on the reaction between Janu...
Kinetic Spectrophotometric Determination of N-Acetyl-L-cysteine Based on a Coupled Redox-Complexation Reaction
Kinetic Spectrophotometric Determination N-Acetyl-L-cysteine Coupled Redox-Complexation Reaction
2010/9/20
A novel simple kinetic spectrophotometric method for the determination of N-acetyl-L-cysteine (NAC) has been developed and validated. The proposed method is based on a coupled redox-complexation react...
Speciation and Analysis of Arsenic(III) and Arsenic(V) by Electrochemical Hydride Generation Spectrophotometric Method
Speciation and Analysis Arsenic(III) Arsenic(V) Electrochemical Hydride Generation Spectrophotometric Method
2010/9/17
A simple method was developed for speciation and spectrophotometric determination of inorganic As(III) and As(V) using an electrochemical hydride generation technique. For speciation of As(III) and As...
Development and Validation of Spectrophotometric Methods for Estimating Amisulpride in Pharmaceutical Preparations
Spectrophotometric Methods Estimating Amisulpride Pharmaceutical Preparations
2010/9/20
Five simple, sensitive, accurate and rapid visible spectrophotometric methods (A, B, C, D and E) have been developed for estimating Amisulpride in pharmaceutical preparations. These are based on the d...
Spectrophotometric Determination of Traces of Platinum with 5-Chloro-2-hydroxythiobenzhydrazide after Extraction into Molten Naphthalene
Spectrophotometric Determination Platinum 5-Chloro-2-hydroxythiobenzhydrazide
2010/9/17
Platinum(IV) can be determined spectrophotometrically with 5-chloro-2-hydroxythiobenzhydrazide on extraction into molten naphthalene from the aqueous phase with pH 2.2 − 6.0. Beer’s law is obeye...
Micellar-mediated Extractive Spectrophotometric Determination of Hydrogen Sulfide/Sulfide through Prussian Blue Reaction: Application to Environmental Samples
Micellar-mediated Extractive Spectrophotometric Determination Hydrogen Sulfide Prussian Blue Reaction
2010/9/17
A sensitive surfactant-mediated extractive spectrophotometric method has been developed, based on the reaction of ferric iron with sulfide to form ferrous iron and its subsequent reaction with ferricy...
New Spectrophotometric and Fluorimetric Methods for Determination of Fluoxetine in Pharmaceutical Formulations
Fluorimetric Methods antidepressant drug Pharmaceutical
2009/9/4
New simple and sensitive spectrophotometric and fluorimetric methods have been developed and validated for the determination of fluoxetine hydrochloride (FLX) in its pharmaceutical formulations. The s...
A Spectrophotometric Method for the Determination of Prazosin Hydrochloride in Tablets
Prazosin hydrochloride Spectrophotometry Tablets
2010/4/22
A rapid and sensitive analytical method was developed for the spectrophotometric assay of prazosin hydrochloride. The method is based on the formation of a coloured derivative between the drug and 1,2...
Solid-Phase Extraction of Copper with Lead 4-benzylpiperidinedithiocarbamate on Microcrystalline Naphthalene and its Spectrophotometric Determination
Solid-phase extraction copper 4-benzylpiperidinedithiocarbamate UV-VIS spectrophotometry microcrystalline naphthalene
2010/4/22
Using lead 4-benzylpiperidinedithiocarbamate complex (Pb(4-BPDC)2), a solid-phase extraction method was developed for pre-concentration and spectrophotometric determination of copper in water samples....
Determination of the Protonation Constants of Some Substituted Salicylideneanilines by the Spectrophotometric Method in Ethanol-Water Mixtures
Protonation constant titrimetry Schiff's base ethanol-water mixture potentiometric method spectrophotometric method
2010/4/22
Protonation constants of salicylideneaniline and methyl-, ethyl-, methoxy- fluoro-, chloro-, bromo- and iodo- substituted salicylideneanilines were determined by spectrophotomeric titrimetry in 10, 30...
Spectrophotometric Determination of Selenium (IV) Using Methdilazine Hydrochloride
Spectrophotometric Determination Selenium (IV) Methdilazine Hydrochloride
2010/6/27
Methdilazine hydrochloride is proposed as a selective and sensitive reagent for the spectrophotometric determination of selenium (IV). The reagent forms a red radical cation by selenimum (IV) in hydro...
Synthesis of 4-Benzyl-1-Piperazineglyoxime and its Use in the Spectrophotometric Determination of Nickel
Synthesis of 4-Benzyl-1-Piperazineglyoxime Spectrophotometric Determination Nickel
2010/6/29
A new reagent, 4-benzyl-1-piperazineglyoxime(BPGH2), was synthesized and used for developing a simple and rapid extractive method for the spectrophotometric determination of nickel. This method is bas...