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BSI 23/30463156 DC:2023 Edition

BSI 23/30463156 DC:2023 Edition

$13.70

BS EN 17703. Plant biostimulants. Determination of chromium(VI)

Published By Publication Date Number of Pages
BSI 2023 22
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This document was developed to provide a method for verifying that hexavalent chromium (CrVI) is not present in plant biostimulants in a concentration that exceeds the respective limits outlined in the EU Regulation on Fertilising Products [1]. This document is applicable to all types of plant biostimulants (solid and liquid ) used in agriculture. The method described is suitable to quantify the chromium(VI) content in plant biostimulants down to 2 mg/kg. The results obtained from this method are strictly dependent on the extraction conditions. Results obtained by using other extraction procedures (extraction solution, pH, extraction time, etc.) are not comparable with the results produced by the procedure described in this document. Therefore, this document is highly recommended to quantify the chromium(VI) content in blends of fertilizing products containing plant biostimulants, independently of the percentage of the different parts forming the blend.

PDF Catalog

PDF Pages PDF Title
7 1 Scope
2 Normative references
3 Terms and definitions
8 4 Principle
5 Chemicals
9 6 Apparatus and materials
10 7 Procedure
7.1 Sampling and preparation of samples
7.2 Preparation of analytical solution
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 AnnexĀ A (informative)Results of the inter-laboratory study
A.1 Inter-laboratory tests
A.2 Statistical results for the determination of Cr(VI)
16 AnnexĀ B (informative)Chromatographic conditions for direct detection method
B.1 General
B.2 Example of ion chromatographic conditions
B.2.1 Mobile phase reagents
B.2.2 Instrumental conditions
18 AnnexĀ C (informative) Chromatographic conditions for method with post-column reaction
C.1 General
C.2 Chromatographic system and apparatus required
19 C.3 Example of analytical conditions
21 AnnexĀ ZA (informative)Relationship of this European Standard and the essential requirements of Regulation (EU) 2019/1009 making available on the market of EU fertilising products aimed to be covered

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BSI 23/30463156 DC
$13.70