BS ISO 19822:2018
$142.49
Fertilizers and soil conditioners. Determination of humic and hydrophobic fulvic acids concentrations in fertilizer materials
| Published By | Publication Date | Number of Pages |
| BSI | 2018 | 26 |
This document specifies the procedure for the analysis of humic acids and hydrophobic fulvic acids which is applicable to dry and liquid materials used as ingredients in commercial fertilizers, soil amendments, and geological deposits.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 6 | Foreword |
| 7 | Introduction |
| 9 | 1 Scope 2 Normative References 3 Terms and definitions |
| 10 | 4 Principles 5 Warnings 5.1 Requirements 5.1.1 Good laboratory practices 5.1.2 Moisture control 5.3 Lignosulfonates 5.4 Temperature control 6 Reagents |
| 11 | 7 Apparatus |
| 12 | 8 Preparing crucibles, drying, and weighing samples 8.1 Preparing crucibles 8.2 Drying and weighing solid analytical samples |
| 13 | 8.3 Drying and weighing liquid samples 9 Extraction procedure 9.2 Separation of HA |
| 14 | 10 Determination of ash content 11 Separation of Hydrophobic Fulvic Acids (HFA) |
| 15 | 12 Hydrogen ion exchange |
| 16 | 13 Calculations 13.1 Determination of ash-free HA weight 13.2 Determination of ash-free HFA weight 13.3 Determination of % analyte in solid analytical samples 13.4 Determination of % analyte in liquid samples 14 Resin regeneration and column preparation 14.1 General |
| 17 | 14.1.1 Preparation of chromatography resin 14.1.2 Chromatography column preparation 14.1.3 Chromatography Resin regeneration 14.2 Regeneration of hydrogen form H+ exchange resin |
| 18 | Annex A (informative) Procedure to confirm the presence lignosulfonates |
| 21 | Annex B (informative) ISO/CD 19822 interlaboratory study |
| 24 | Bibliography |
