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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[11] DETERMINATION OF TRACE AMOUNTS OF COBALT AS CHELATE WITH 2-(5-BROMO-2-PYRIDYLAZO)-5-DIETHYLAMINOPHENOL BY MICELLAR HPLC
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[13] Trace determination of metal ions by on-line column enrichment followed by HPLC as metal-2-(5-nitro-2-pyridylazo)-5-[N-propyl-N-(3-sulfopropyl)amino]phenol chelates
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