AN-H-146 Ammonium and urea nitrogen in NPK fertilizers Fast, simultaneous determination of both components by thermometric titration Summary Fertilizers are applied in the agricultural sector to provide more essential nutrients to growing plants. The so-called «NPK» fertilizers provide such nutrients…
AN-H-127 Thermometric analysis of aluminum by backtitration Fast and robust technique for aluminum determination Summary A thermometric complexometric titration procedure has been adapted to the determination of aluminum in solutions, where the direct titration with fluoride is not practicable because…
AN-H-148 Potassium in potash Rapid and inexpensive determination by thermometric titration Summary Potash refers to various water-soluble potassium salts, such as potassium chloride or potassium carbonate. Potash is mainly used as fertilizer, providing potassium—an essential nutrient—to plants. Additionally, it is…
AN-T-224 Aluminum content in coagulants and flocculants for wastewater treatment Fast and accurate thermometric determination based on ABNT NBR 11176 Summary Coagulation and flocculation are an essential part of treating both drinking water and wastewater. A common practice in overloaded…