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BSI PD CEN/TS 17778:2022

$102.76

Organic and organo-mineral fertilizers. Determination of the chromium (VI) content by chromotography

Published By Publication Date Number of Pages
BSI 2022 22
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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
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
BSI PD CEN/TS 17778:2022
$102.76