DIN EN 15950:2010-12
Fertilizers - Determination of N-(1,2-dicarboxyethyl)-D,L-aspartic acid (Iminodisuccinic acid, IDHA) using high-performance liquid chromatography (HPLC); German version EN 15950:2010
| Fecha edición: |
2010-12-01
En Vigor
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| Idiomas disponibles: | Inglés, Alemán |
| Resumen: | This document specifies a method for the determination of N-(1,2-dicarboxyethyl)-D,L-aspartic acid (Iminodisuccinic acid, IDHA) in fertilizers. IDHA is measured and detected by HPLC-method after total conversion of the chelating agent into its iron- (III)-salt by adding an excess of a solution of iron-(III)-nitrate. In the HPLC-diagram IDHA is represented by two dominant peaks, the first one representing the R, S-Isomer (50 %), and the second one representing the R,R- as well as the R-Isomer (50 %). The precision of the method has been determined in an inter-laboratory trial with eleven laboratories participating and carried out on nine samples of fertilizer. |
| Keywords: | Agriculture|Calibration|Chelating agents|Determination|Fertilizers|High performance liquid chromatography|HPLC|Liquid chromatography|Mathematical calculations|Measurement|Measuring techniques|Methods|Reagents|Samples|Sampling methods|Soil improving materials|Specimen preparation|Test solutions |
| ICS: | 65.080 - Fertilizantes |
| CTN: | |
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Equivalencia Internacional |
Idéntica EN 15950:2010 |
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Reemplazo Normas |
Reemplaza a DIN EN 15950:2009-06 |
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