🔥🔥 Don’t Miss Out on Our End of Autumn Sale. If you have any questions, feel free to click the bottom right corner to contact our customer service..

Concat us[email protected]
Shopping Cart

No products in the cart.

🔍
BSI PD CEN/TS 17701-1:2022

BSI PD CEN/TS 17701-1:2022

$86.31

Plant biostimulants. Determination of specific elements – Digestion by aqua regia for subsequent determination of elements

Published By Publication Date Number of Pages
BSI 2022 14
PDF Format Searchable Printable Preview Now
Guaranteed Safe Checkout
Category:

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. We’re here to assist you 24/7.
Email:[email protected]

This document specifies the method for the digestion of different plant biostimulants with aqua regia to enable a subsequent determination of arsenic (As), cadmium (Cd), copper (Cu), chromium (Cr), mercury (Hg), nickel (Ni), lead (Pb) and zinc (Zn). The method can be also applied for determination of other elements. The method is applicable for all solid and/or liquid plant biostimulants. This document is also applicable to the blends of fertilizing products where plant biostimulants are the main part of the blend. Otherwise, the Technical Specification for the main part of the blend applies. The extracts are suitable for analysis using CEN/TS 17701-2 (ICP-AES) and CEN/TS 17701-3 (Hg analysis). NOTE Alternatively, inductively coupled plasma mass spectrometry (ICP-MS) can be used for the measurement if the user proves that the method gives the same results.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Sampling and sample preparation
8 6 Reagents
6.1 Water with a specific conductivity not higher than 0,2 mS/m at 25 °C, free from the elements to be determined.
6.2 Hydrochloric acid 37 %, c(HCl) ≈ 12 mol/l, ρ ≈ 1,18 g/ml.
6.3 Nitric acid 65 %, c(HNO3) ≈ 14,3 mol/l, ρ ≈ 1,4 g/ml.
6.4 Antifoaming agent, e.g. n-dodecane (C12H26) or octanol (C8H18O) are suitable.
7 Apparatus
7.1 Common laboratory glassware. All glassware and plastic ware shall be adequately cleaned and stored to avoid any contamination.
7.2 Apparatus for thermal heating digestion, temperature controlled with reaction vessel and reflux condenser. The capacity of the reaction vessel should be at least 5 times of the volume of the aqua regia used.
7.3 Filter paper, ash free and of recognized and tested quality.
7.4 Analytical balance capable of weighing to an accuracy of 1 mg or better.
8 Procedure
8.1 Sample digestion
9 8.2 Sample pre-concentration
8.3 Blank
9 Test report
10 Annex A (informative)Adjustment to different digestion procedures and measurement apparatuses
A.1 Adjustment of the procedure to different final volumes
A.2 Calculation of the sample weight
A.2.1 General
11 A.2.2 Calculation of the weight of the sample (dry matter)
A.2.3 Calculation of the weight of the sample for analysis
A.2.4 Example

Related products

BSI PD CEN/TS 17701-1:2022
$86.31