Determination of Cobalt in Natural Water as a 2-(5-Bromo-2-pyridylazo)-5-N-propyl-N-(3-sulfopropyl)aminophenol Chelate by On-Line Preconcentration HPLC with Column-Switching Technique

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Department of Applied Chemistry, Faculty of Engineering, Utsunomiya University, Ishii-cho, Utsunomiya 321-8585, Japan ^{[1
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Anal. Sci. | / 2卷 / 343-347期

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[31] Preconcentration of trace cobalt with the ion pair of 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol and tetraphenylborate onto microcrystalline naphthalene or column method and its determination by derivative spectrophotometry
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Puri, BK
Taher, MA
Dehzoei, AM
Sheibani, A
TALANTA, 1998, 46 (05) : 1107 - 1113
[32] HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHIC DETERMINATION OF COBALT(II) AS THE 2-(5-BROMO-2-PYRIDYLAZO)-5-DIETHYLAMINOPHENOL CHELATE AFTER PRECONCENTRATION WITH A CATION-EXCHANGE RESIN
UEHARA, N
KATAMINE, A
SHIJO, Y
ANALYST, 1994, 119 (06) : 1333 - 1335
[33] Nonaqueous based microchip separation of toxic metal ions using 2-(5-bromo-2-pyridylazo)-5-(N-propyl-N-sulfopropylamino)phenol
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[34] Column preconcentration and FAAS determination of copper, iron, nickel and zinc using 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol–tetraphenylborate–naphthalene adsorbent
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[35] Simultaneous determination of trace amounts of vanadium and cobalt in steel and environmental materials with 2-(5-nitro-2-pyridylazo)-5 [N-n-propyl-N-(3-sulfopropyl)amino]phenol by reversed-phase high-performance liquid chromatography
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Zhang, QB
Minami, H
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[36] Complex formation between M(II) (M=Cu, Zn, Mn) and 2-(5-bromo-2-pyridylazo)-5-(N-propyl-N-3-sulfopropylamino)phenol
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[37] HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHY OF COPPER, COBALT, NICKEL, CHROMIUM AND VANADIUM CHELATES WITH 2-(5-BROMO-2-PYRIDYLAZO)-5-(N-PROPYL-N-SULPHOPROPYLAMINO)PHENOL
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[38] Adsorptive Voltammetry of 2-(5-Bromo-2-pyridyl)azo-5-[N-n-propyl-N-(3-sulfopropyl)amino]phenol on a Carbon Paste Electrode in the Presence of Organic Cations and Polycation
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[39] Adsorptive voltammetry of 2-(5-bromo-2-pyridyl)azo-5-[N-n-propyl-N-(3-sulfopropyl)amino]phenol on a carbon paste electrode in the presence of organic cations and polycation
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[40] SYNTHESIS AND CHARACTERIZATION OF 2-(5-BROMO-2-PYRIDYLAZO)-5-[(N,N-DICARBOXYLMETHYL)AMINO]-PHENOL AS A WATER-SOLUBLE CHROMOGENIC REAGENT
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