ЗАСТОСУВАННЯ СОЛЕЙ ТЕТРАЗОЛІЮ ДЛЯ КІЛЬКІСНОГО ВИЗНАЧЕННЯ АНТИБІОТИКІВ ЦЕФАЛОСПОРИНОВОГО РЯДУ
n-Nitrotetrazolium violet and n-nitrotetrazolium chloride are proposed as high sensitive reagents for the quantitative determination of cephalosporin antibiotics. The developed method is valid, highly sensitive, precise and simple. The main dependences between chemical structure of investigated antibiotics, their reducing properties and reaction ability were established according to the polarografic and quantum chemical analysis data.