Fertilizers. Treatment with a cation exchange resin for the determination of the chelated micro-nutrient content and of the chelated fraction of micro-nutrients— 14 стр.
Fertilizers. Determination of chelating agents in fertilizers by chromatography. Determination of Fe chelated by [o,o] EDDHA, [o,o] EDDHMA and HBED, or the amount of chelating agents, by ion pair chromatography— 30 стр.