FIELD: analytical methods. SUBSTANCE: alcoholic extract is mixed with 35-45% aqueous solution of sodium hydroxide and 0.04-0.6% alcoholic solution of m- dinitrobenzene, whereupon, 20 min later, reaction mixture is subjected to spectrophotometric determination. EFFECT: simplified procedure. 3 cl, 3 dwg, 1 tbl
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Authors
Dates
2003-06-27—Published
2002-01-08—Filed