FIELD: chemistry.
SUBSTANCE: method involves preliminary removal of dissolved oxygen under the effect of UV radiation in the presence of an additive. Removal of dissolved oxygen is achieved when irradiating with light from a mercury-quartz lamp for 4-5 minutes, and the additive used is one system which generates OH radicals Fe+2 - EDTA; Cu2+ - EDTA; Fe2+ - HPO4 2+; and Fe2+ - H2O2.
EFFECT: invention increases sensitivity of the method by reducing noise.
2 cl, 4 dwg, 1 ex
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