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BSI PD CEN/TS 17769:2022

$86.31

Organic and organo-mineral fertilizers. Determination of the mercury content

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BSI 2022 14
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This document specifies a method for determination of the content of mercury (Hg) in organic fertilizers and organo-mineral fertilizers using (cold) vapour generation apparatus coupled to an atomic absorption spectrophotometer and a method using a direct amalgamation technique. It is applicable to aqua regia digests prepared according to CEN/TS 17768. NOTE It is also possible to use other suitable methods for the determination of mercury described in Annex A if users prove that the method gives the same results as the methods described in this standard.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 1 Scope
2 Normative references
3 Terms and definitions
4 Principle
4.1 Vapour generation atomic absorption spectrophotometry (VG-AAS)
4.2 Direct amalgamation (DA)
5 Interferences
5.1 Vapour generation atomic absorption spectrophotometry (VG-AAS)
8 5.2 Direct amalgamation (DA)
6 Reagents
9 7 Apparatus
8 Procedure
8.1 Preparation of the test and blank solutions
10 8.2 Preparation of the calibration solutions
8.3 Measurement
8.3.1 Instrument conditions
8.3.2 Matrix effects
8.3.3 Spiking
11 8.3.4 Measurement by VG-AAS
8.3.5 Measurement by DA
9 Calculation and expression of the results
9.1 Content of mercury
12 10 Test report
BSI PD CEN/TS 17769:2022
$86.31