BS EN 16847:2016
$102.76
Fertilizers. Determination of complexing agents in fertilizers. Identification of heptagluconic acid by chromatography
| Published By | Publication Date | Number of Pages |
| BSI | 2016 | 22 |
This European Standard specifies a chromatographic method which allows the identification of heptagluconic acid (HGA) in fertilizers containing heptagluconic acid metal complexes.
This method is applicable to EC fertilizers containing complexed micro-nutrients, which are covered by Regulation (EC) No 2003/2003 [1].
NOTE For the complete names of the chelating agents mentioned in this document, see Annex E.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 4 | Contents Page |
| 5 | European foreword |
| 6 | 1 Scope 2 Normative references 3 Terms and definitions 4 Principle 5 Interferences |
| 7 | 6 Apparatus 7 Reagents |
| 8 | 7.1 Water, 7.2 Sample preparation solvent. 7.3 HGA stock solution, 7.4 Eluent A: ortho-phosphoric acid, 7.5 Eluent B: acetonitrile (HPLC-grade). 8 Procedure 8.1 Preparation of the HGA-metal complex sample solution |
| 9 | 8.2 Preparation of the calibration solutions 8.3 Chromatographic analysis |
| 10 | 9 Calculation of the heptagluconic acid content and expression of the results 10 Precision 10.1 Inter-laboratory test 10.2 Repeatability 10.3 Reproducibility |
| 11 | 11 Test report |
| 12 | Annex A (informative) Chromatograms of the standard and a typical sample solution |
| 14 | Annex B (informative) Absorption spectra of the HGA |
| 15 | Annex C (informative) Calculation of the molar ratio HGA:Metal |
| 16 | Annex D (informative) Statistical results of the inter-laboratory test D.1 Inter-laboratory test D.2 Test Samples D.3 Inter-laboratory test procedure D.4 Results and statistical interpretation |
| 18 | Annex E (informative) Complete names of chelating agents |
| 19 | Bibliography |
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