Anions in surface, ground, mineral, borehole and pure waters - Determination of Anions in Natural and Treated Waters - page 452

Kyual'nik mineral spring, August 29 1980 1.92 0.12

Source: Reproduced with permission from Soviet Journal of Chemistry and Technology [4]

6.1.3 Chloride

6.1.3.1 Ion chromatography

The application of this technique is discussed under multianion analysis in sections
6.1.13.1 and 12.5.1.

6.1.4 Fluoride

6.1.4.1 Ion chromatography

The application of this technique is discussed under multianion analysis in sections
6.1.13.1 and 12.5.1.

6.1.5 Nitrate

6.1.5.1 Spectrophotometric method

Van Staden et al. [9] used a flow-injection Spectrophotometric method to determine
nitrate in surface water, groundwater and domestic water samples. The nitrate is first
reduced to nitrite with a copperised cadmium tube in the reaction manifold; the nitrite is
diazotised with subfanilamide and the product is coupled with N -(1-naphthyl)-
ethylenediammonium chloride to form a highly coloured azo dye which is measured at
520nm. The sampling rate is 50 samples/h, and the coefficient of variation is better than
1.5%.

6.1.5.2 Ion chromatography

The application of this technique is discussed under multianion analysis in sections
6.1.13.1 and 12.5.1.

6.1.6 Nitrite

6.1.6.1 Ion chromatography

The application of this technique is discussed under multianion analysis in sections
6.1.13.1 and 12.5.1.