Anions in non saline waters - Determination of Anions in Natural and Treated Waters - page 271

2.76 Phosphite
2.76.1 High performance liquid chromatography
The application of this technique is discussed under multianion analysis in section
13.1.1.5
2.77 Polyphosphate
2.77.1 High performance liquid chromatography
Yaza et al. [238] analysed mixtures of monofluorphosphate, ortho-phosphate and
polyphosphates by this technique using a photodiode array detector.
2.78 Polysulphide
2.78.1 Titration methods
Polysulphides can be determined in non saline waters by titration with mercury(II)
solutions. Sulphides, thiosulphides, sulphites and thiols interfere in this procedure [663].
2.78.2 Flow injection analysis
Sonne and Dasgupta [664] have determined polysulphides, sulphate, sulphite and
thiosulphate by simultaneous photometric flow injection analysis.
The application of this technique is discussed under multianion analysis in section
14.4.1.1.
2.79 Protocatechaute
2.79.1 Ion chromatography
The application of this technique is discussed under multianion analysis in section 12.2.5.
2.80 Propionate
2.80.1 Ion chromatography
The application of this technique is discussed under multianion analysis in section 12.2.5.