VAC 06.01.2004 Агрохимия
UDK 63 Сельское хозяйство. Лесное хозяйство. Охота. Рыбное хозяйство
GRNTI 38.33 Геохимия
GRNTI 38.41 Методы лабораторных минералого-петрографических и геохимических исследований
GRNTI 68.31 Сельскохозяйственная мелиорация
GRNTI 68.33 Агрохимия
OKSO 04.03.01 Химия
OKSO 04.04.01 Химия
OKSO 04.06.01 Химические науки
OKSO 04.07.01 Химические науки
OKSO 110000 СЕЛЬСКОЕ И РЫБНОЕ ХОЗЯЙСТВО
OKSO 35.03.03 Агрохимия и агропочвоведение
OKSO 35.04.03 Агрохимия и агропочвоведение
BBK 24 Химические науки
BBK 40 Естественнонаучные и технические основы сельского хозяйства
TBK 5607 Сельскохозяйственная мелиорация
TBK 62 Химические науки
TBK 6331 Геохимия
BISAC SCI013000 Chemistry / General
BISAC TEC003000 Agriculture / General
Variants of the compositions of a series of placers for visually blister colorimetric determination of phosphate ion concentrations in a blister cell (tablet for tablets) containing a mixture of reagents are proposed. The placers allow quantitative determination of the phosphate concentration in various objects without preliminary preparation of reagent solutions. The application of reagents to the surface of silica gel makes it possible to isolate all reagents until a chemical reaction occurs. The composition and conditions of deposition of crystalline substances – reagents capable of providing a sufficiently high acidity with the addition of a few drops of a solution and an optimal reducing agent for blister conditions were optimized. The visual colorimetric reaction is carried out under conditions when the volume of the added solution is 0.1–0.2 ml.
phosphate ions, rapid analysis methods, silica gel, sorption, blister cell, photometry
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