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Fluorescence of Barbiturates in Solution and Their Measurement in Pharmaceutical Preparations

The general utilization of fluorescence for pharmaceutical analysis is discussed and the native fluorescence of several barbiturates and the characteristics of each are reported. Concentration ranges applicable for linear response with the instrumentation used are also discussed.

出版机构:Taylor & Francis

刊物名称:Analytical Letters

出版时间:1971

ISSN:0003-2719

数据源:报刊文摘

Application of Combined Dsc-Analog Computer Analysis in the Determination of Chemical Kinetic Parameters for the Thermal Decomposition of Phenylalanine

n analog-computer-DSC procedure has been outlined for determining the kinetic parameters EA and A for chemical reactions involved in the thermal decomposition of the amino acid, phenylalanine.

出版机构:Taylor & Francis

刊物名称:Analytical Letters

出版时间:1971

ISSN:0003-2719

数据源:报刊文摘

Determination of Tellurium by Instrumental Photon Activation Analysis

Tellurium has been determined at milligram and submilligram levels in the presence of uranium by a strictly instrumental photon activation 121 analysis procedure. The 575 keV gamma ray of Te was measured. At a decay time of three weeks, this gamma ray peak was interference-free. As little as 0.

出版机构:Taylor & Francis

刊物名称:Analytical Letters

出版时间:1971

ISSN:0003-2719

数据源:报刊文摘

1, 1-Dianthrimide as a Reagent for the Spectrophotometric Determination of Boron

The optimum conditions for the formation of the blue 1:1 complex by the reaction of 1, 1-dianthrimide and boric acid in 95% by weight sulfuric acid have been determined. The effect of certain diverse ions are reported. The procedure is applicable to the determination of 1 to 10 ? of boron.

出版机构:Taylor & Francis

刊物名称:Analytical Letters

出版时间:1971

ISSN:0003-2719

数据源:报刊文摘

Simultaneous Estimation of 4-O-Methyl-D-Glucuronic Acid and Other Uronic Acids By Gas-Liquid Chromatography

Uronic acids in polysaccharides may be reduced by reaction of the propionated methyl ester with lithium borohydride in tetrahydrofuran. After hydrolysis and reduction of the monosaccharides the acetylated alditols may be separated by gas-liquid chromatography on a column of butanediol succinate.

出版机构:Taylor & Francis

刊物名称:Analytical Letters

出版时间:1971

ISSN:0003-2719

数据源:报刊文摘

Fluorimetric Determination of Nitrate

ensitive fluorimetric method has been developed for the determination of nitrate based on the reduction of nitrate to nitrite with hydrazine sulfate and the subsequent determination of the nitrite formed with 2, 3-diaminonaphthalene.

出版机构:Taylor & Francis

刊物名称:Analytical Letters

出版时间:1971

ISSN:0003-2719

数据源:报刊文摘

Determination of Hydrofluoric Acid in Mixed Acids with an Acid Concentration Meter

ommercial acid concentration meter containing an N-type silicon anode and stainless cathode has been used to selectively measure hydrofluoric acid in mixtures containing nitric, phosphoric and sulfuric acids.

出版机构:Taylor & Francis

刊物名称:Analytical Letters

出版时间:1971

ISSN:0003-2719

数据源:报刊文摘

Nondestructive Determination of Mercury in Copper by Thermal Neutron Activation Analysis

Thermal neutron activation analysis was applied to the nondestructive determination of parts per billion (p.p.b.) quantities of mercury in high purity, oxygen-free high conductivity (OFHC) copper.

出版机构:Taylor & Francis

刊物名称:Analytical Letters

出版时间:1971

ISSN:0003-2719

数据源:报刊文摘

Determination of Oxygen, Carbon Dioxide, and Nitrous Oxide in Blood by Gas Chromatography

gas chromatograph (Beckman) was modified for determination of blood O2, CO2 and N2O content with i. a. a new extraction tube. Different characteristics in volume of extraction tube, carrier gas (Helium) flow, volumes of reagents and times for reaction between reagents and blood were investigated.

出版机构:Informa Healthcare

刊物名称:Scandinavian Journal of Clinical and Laboratory Investigation

出版时间:1971

ISSN:0036-5513

数据源:报刊文摘

Untersuchungen uber die Kupellationsmethode zur Ruthenium- und Iridiumisolierung

Mittels 103Ru und 192Ir sind die verschiedenen verfahrensschritte (Kupellation, Eindampfen des Bleis usw.) der Kupellations-methode zur Isolierung dieser zwei Platinmetalle untersucht worden.

出版机构:Taylor & Francis

刊物名称:Isotopes in Environmental and Health Studies

出版时间:1971

ISSN:1025-6016

数据源:报刊文摘