Arsenazo

Arsenazo

 

organic reagents used in analytical chemistry. There are three different reagents: arsenazo-I,-II, and -III. Arsenazo is a fine crystalline powder, dark brown or black (arsenazo-lll) in color, easily soluble in water. All arsenazo reagents are derivatives of chromotropic acid (1) and various substitutes of phenolarsenic acid (2). Arsenazo-II and arsenazo-III differ from arsenazo-I (3) by their more complicated structure. Arsenazo forms colored solutions with

many elements; these solutions can be used for the photometric determination (arsenazo -I) of the elements. They form strong complexes with such elements as thorium, zirconium, and hafnium.

REFERENCE

Kuznetsov, V. I., and V. G. Tiptsova. “Arsenazo.” In Kratkaia khimicheskaia entsiklopediia, vol. 1. Moscow, 1961. Page 292.
References in periodicals archive ?
The following methods were used: calcium: Arsenazo III dye method; uric acid: the uricase method; glucose: glucose oxidase method; aspartate aminotransferase (AST): aspartate plus the alpha ketoglutarate method; and creatine kinase (CK): the creatine phosphate method.
5-13 (c) (a) Method: Olympus AU640e analyzer (Center Valley, PA, USA; Arsenazo dye method) (Ref.
1986), Phosphorus: phosphomolybdate UV (Daly and Ertingshausen, 1972), Calcium: arsenazo (Baginski et al.
Comparison of isotropic calcium signals from intact frog muscle fibers injected with arsenazo III or antipyrylazo III.
The Abbott Architect c8000 method of total calcium determination is based on the reaction of Arsenazo III dye with calcium in an acid solution to form a blue-purple complex that is measured at 660 nm.
The amount of extracted Ca in some selected samples was determined spectrophotometrically as an arsenazo complex using a microanalytical procedure (27).
Arsenazo III (Fluka) as well as the other reagents used were of analytical grade purity.
After the separation of the phases, the metal concentration in the aqueous phase was determined photometrically using Arsenazo III [20].
The most widely used method involves colorimetric detection of calcium complexes by o-cresolphthalein complexone (o-CPC) (2,3) or arsenazo.
This analyzer measures potassium concentration potentiometrically by direct ion-selective electrode methodology, and calcium concentration is measured colorimetrically utilizing an arsenazo III dye methodology.
This problem has been documented for gadodiamide in colorimetric calcium methods based on the calcium binding dyes OCP (8-11) and Arsenazo III (9).
Serum glucose kit in presentation r1 (20ml) containing 5 cartridges per kit with yield of 300 tests per cartridge and performance testing kit 1500 with hexokinase methodology / g-6-pdh (including without edta tubes 1000 5ml,calcium tests with presentation of r1 (13ml) containing 5 cartridges per kit with a yield of 300 and 1500 test for testing cartridge with arsenazo iii kit methodology.