Mineralna đubriva - Određivanje helatnih jedinjenja u mineralnim đubrivima hromatografijom - Deo 2: Određivanje helata Fe o,o-EDDHA i o,o-EDDHMA dvojonizujućom hromatografijom
Fertilizers - Determination of chelating agents in fertilizers by chromatography - Part 2: Determination of Fe chelated by o,o-EDDHA and o,o-EDDHMA by ion pair chromatography