Determination of inorganic anions by non-suppressed ion chromatography with indirect ultraviolet absorption detection

Autor:	Frank G. P. Mullins
Rok vydání:	1987
Předmět:	Chemistry Inorganic chemistry Chlorate Ion chromatography Bromate Biochemistry Chloride High-performance liquid chromatography Analytical Chemistry chemistry.chemical_compound Column chromatography Bromide Electrochemistry medicine Environmental Chemistry Spectroscopy Iodate medicine.drug
Zdroj:	The Analyst. 112:665
ISSN:	1364-5528 0003-2654
DOI:	10.1039/an9871200665
Popis:	Reversed-phase high-performance liquid chromatography (HPLC) using a hexadecyltrimethylammonium bromide (CTAB) conditioned stationary phase is shown to provide efficient separation of iodate, phosphate, bromate, chloride, nitrite, bromide, nitrate and chlorate in 11 min. The anions were detected using an eluent containing sodium hydrogen phthalate by the indirect ultraviolet absorption (IUA) technique. The mechanism of separation of the anions is attributed to their interaction with the surface electrical double layer (formed by the initial adsorption of CTAB on the stationary phase) followed by conditioning with sodium hydrogen phthalate. Systems peaks could be induced by increasing the pH or the ionic strength of the eluent.The application of ion chromatography with IUA detection to the determination of anions is demonstrated via the determination of nitrate and chloride in both a domestic water sample and a river water sample. The limits of detection for nitrate and chloride were 3 and 4 nmol of anion injected, respectively.
Databáze:	OpenAIRE
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