FIELD: chemistry.
SUBSTANCE: method involves thermal acid decomposition of a plant sample, multiple dilution of the sample to total phosphorus content of not more than 500 mg/dm3, centrifuging and performing analysis on a capillary electrophoresis system in a quartz capillary with effective length of 0.5 m and inner diameter of 75 mcm. Analysis is performed using an aqueous main electrolyte solution containing 0.2% potassium chromate and 0.6% urotropin with negative voltage polarity and detection wavelength of 254 nm.
EFFECT: faster, improved and highly objective quantitative analysis.
1 dwg, 1 tbl, 6 ex
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RU2669946C1 |
