Anions in non saline waters - Determination of Anions in Natural and Treated Waters - page 111

moderate with pneumatic nebulisation but significant with ultrasonic sample nebulisation.
2.12.10 Ion chromatography
The application of this technique is discussed under multianion analysis in sections
12.2.1, 12.2.4 and 12.2.5.
2.12.11 High performance liquid chromatography
Stetzenbach and Thompson [138] employed high performance liquid chromatography on
anion exchange columns to determine bromide in admixture with chloride, iodide, nitrate
and thiocyanate in non saline waters.
Moss and Stephen [139] determined bromide, chloride and iodide in non saline waters
by conversion to alkyl halide and measurement by high performance liquid
chromatography.
The application of this technique is also discussed under multianion analysis in
sections 13.1.1.2, 13.1.1.4 and 13.1.1.7.
2.12.12 Ion exchange chromatography
Akaiwa et al. [140] have used ion exchange chromatography on hydrous zirconium
oxide, combined with detection based on direct potentiometry with an ion selective
electrode, for the simultaneous determination of chloride and bromide in non saline
waters.
Salov et al. [141] have described a procedure for determining bromide (and chloride,
iodide, chlorate, bromate and iodate) in water employing high performance liquid
chromatography with an indirectly coupled argon plasma mass spectrometric detector.
2.12.13 Micelle chromatography
Okada [142] has used micelle exclusion chromatography to determine bromide in the
presence of anions (iodide, iodate, nitrite and nitrate) in water. The method is based on
partition of the anions to a cationic micelle phase and shows different selectivity from ion
exchange chromatography.
Okada [142] also used micelle chromatography to analyse mixtures of bromide, iodide,
nitrite, nitrate and iodate.
The application of this technique is also discussed under multianion analysis in section
13.5.1.2.
2.12.14 Gas chromatography
Narasaki et al. [143] determined bromide in non saline waters by head space gas
chromatography. The solution containing bromide (>0.3µg) was evaporated to dryness,
and the residue was oxidised with a citric acid solution, potassium permanganate
solution, and an manganese dioxide suspension in sulphuric acid to form CHBr 2 COCBr 3
which was then decomposed with sodium hydroxide to form bromoform