BSI PD CEN/TS 17778:2022
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Organic and organo-mineral fertilizers. Determination of the chromium (VI) content by chromotography
Published By | Publication Date | Number of Pages |
BSI | 2022 | 22 |
This document is applicable to fertilizing products, which are classified as PFC 1(A) and PFC 1(B) or the PFC 1(A) and PFC 1(B) component in PFC 7 of Regulation (EU) 2019/1009 [3]. However, the present method was not validated on blends. This document specifies a method for the determination of hexavalent chromium (chromium (VI)) in organic and organo-mineral fertilizers. The method described is suitable to quantify the chromium (VI) content in organic and organo-mineral fertilizers down to 2 mg/kg dry matter. The results obtained from this method are strictly dependent on the extraction conditions. Results obtained by using other extraction procedures (extraction solution, pH of the extraction solution, extraction time, extraction temperature, etc.) are not comparable with the results produced by the procedure described in this document.
PDF Catalog
PDF Pages | PDF Title |
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2 | undefined |
7 | 1 Scope 2 Normative references 3 Terms and definitions 4 Principle |
8 | 5 Reagents 6 Apparatus |
9 | 7 Procedure 7.1 Sampling and sample preparation 7.2 Preparation of analytical solution |
10 | 7.3 Chromatographic conditions 7.4 Calibration |
11 | 7.5 Determination of the recovery rate |
12 | 8 Calculation and expression of results 8.1 Calculation of chromium (VI) content 8.2 Recovery rate (according to 7.5) |
13 | 8.3 Expression of results 9 Test report |
14 | Annex A (informative)Chromatographic conditions for direct detection method A.1 General A.2 Example of ion chromatographic conditions A.2.1 Mobile phase reagents A.2.2 Instrumental conditions |
15 | A.3 Example of a chromatogram and UV spectrum obtained in the analysis of a commercial sample |
17 | Annex B (informative)Chromatographic conditions for method with post-column reaction B.1 General B.2 Chromatographic system and apparatus required |
18 | B.3 Example of analytical conditions B.3.1 Mobile phase and post-column reagents B.3.2 Preparation of the mobile phase B.3.3 Preparation of post-column reagent |
19 | B.3.4 Instrumental conditions B.4 Examples of chromatograms |