Spectrophotometric and Analogue Derivative Spectrophotometric Determination of Chromium(III) with 2-(5-Bromo-2-pyridylazo)-5-(N-propyl-N-sulfopropylamino)phenol
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منابع مشابه
Second derivative spectrophotometric method for simultaneous determination of cobalt, nickel and iron using 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol.
A simple, sensitive and rapid derivative spectrophotometric method using 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol (5-Br-PADAP) has been developed for simultaneous determination of Co(II), Ni(II) and Fe(II) which have very similar chemical behavior and appear together in many real samples. The complexes of all these metal ions with 5-Br-PADAP were formed immediately at pH 7.0 ammonium aceta...
متن کاملCyclic flow-injection analysis for the repetitive determination of zinc with 2-(5-bromo-2-pyridylazo)-5-[N-n-propyl-N-(3-sulfopropyl)amino]phenol and EDTA.
A circulatory flow-injection method (cyclic FIA) for the repetitive determination of zinc has been proposed. The procedure involves the use of 2-(5-bromo-2-pyridylazo)-5-[N-n-propyl-N-(3-sulfopropyl)amino]phenol (5-Br-PAPS) together with EDTA as a reagent carrier solution, which is recycled in a single-line flow system via a reservoir. The formed 5-Br-PAPS-Zn(II) complex was measured spectropho...
متن کاملSimultaneous derivative spectrophotometric determination of zinc and cadmium with 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol in the presence of cetylpyridinium chloride.
A selective and sensitive derivative photometric method has been developed for the determination of trace amounts of Zn2+ with 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol in the presence of cetylpyridinium chloride, a cationic surfactant. The molar-absorption coefficient and analytical sensitivity of the 1:2 complex at 554 nm are 1.19 x 10(5) L mol(-1) cm(-1) and 0.56 ng mL(-1), respectively....
متن کاملN′-(5-Bromo-2-methoxybenzylidene)-2-methoxybenzohydrazide
The title hydrazone compound, C(16)H(15)BrN(2)O(3), adopts an E configuration about the C=N double bond. The mol-ecule is twisted, the dihedral angle between the two substituted benzene rings being 22.0 (2)°. In the crystal structure, mol-ecules are linked through inter-molecular N-H⋯O hydrogen bonds, forming chains along the c axis.
متن کاملN′-(5-Bromo-2-methoxybenzylidene)-2-hydroxybenzohydrazide
The title Schiff base compound, C(15)H(13)BrN(2)O(3), is derived from the condensation of 5-bromo-2-methoxy-benzaldehyde with 2-hydroxy-benzohydrazide in an ethanol solution. The dihedral angle between the two aromatic rings is 6.9 (9)°. The meth-oxy group is coplanar with the attached ring [C-O-C-C = 3.1 (12)°]. An intra-molecular N-H⋯O hydrogen bond is observed. In the crystal structure, the ...
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ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Japan
سال: 1986
ISSN: 0009-2673,1348-0634
DOI: 10.1246/bcsj.59.1455