GB/T 39356-2020Determination of total nickel,total cobalt,total selenium, total vanadium, total stibium,total thallium in fertilizers — Inductively coupled plasma optical emission spectroscopy (English PDF)
肥料中总镍、总钴、总硒、总钒、总锑、总铊含量的测定 电感耦合等离子体发射光谱法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
November 19, 2020
Implementation date
June 1, 2021
Scope
GB/T 39356-2020 is the English-translated version of 肥料中总镍、总钴、总硒、总钒、总锑、总铊含量的测定 电感耦合等离子体发射光谱法.
GB/T 39356-2020 is the Chinese standard "Determination of total nickel,total cobalt,total selenium, total vanadium, total stibium,total thallium in fertilizers — Inductively coupled plasma optical emission spectroscopy".
Its scope clause reads: This standard specifies the use of inductively coupled plasma emission spectrometry (ICP-OES) for the determination of total nickel, total cobalt, total selenium, total vanadium and total Antimony and total thallium content method.
This standard applies to the determination of total nickel, total cobalt, total selenium, total vanadium, total antimony, and total thallium in fertilizers. The detection limits of this standard method are as follows.
Nickel (Ni) is 0.02mg/kg; Cobalt (Co) is 0.02mg/kg; Selenium (Se) is 0.4mg/kg; Vanadium (V) is 0.02mg/kg; antimony (Sb) is 0.1mg/kg; thallium (Tl). 0.01mg/kg when step 6.2.2a) is used, 6.2.2b) It is 0.02mg/kg during the step. Its clauses include principle; reagents or materials.
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Document preview — GB/T 39356-2020
National Standard of the People's Republic of China
- ICS
- 65.080
- Classification
- G 20
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Principle
- 4 Reagents or materials
1 Scope
This standard specifies the use of inductively coupled plasma emission spectrometry (ICP-OES) for the determination of total nickel, total cobalt, total selenium, total vanadium and total
Antimony and total thallium content method.
This standard applies to the determination of total nickel, total cobalt, total selenium, total vanadium, total antimony, and total thallium in fertilizers.
The detection limits of this standard method are as follows. Nickel (Ni) is 0.02mg/kg; Cobalt (Co) is 0.02mg/kg; Selenium (Se) is 0.4mg/kg;
Vanadium (V) is 0.02mg/kg; antimony (Sb) is 0.1mg/kg; thallium (Tl). 0.01mg/kg when step 6.2.2a) is used, 6.2.2b)
It is 0.02mg/kg during the step.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document.
For undated references, the latest version (including all amendments) applies to this document.
GB/T 6682 Analytical laboratory water specifications and test methods
HG/T 2843 Commonly used standard titration solution, standard solution, reagent solution and indicator solution for chemical analysis of fertilizer products
3 Principle
The sample is digested with aqua regia, the total nickel, total cobalt, total selenium, total vanadium, and total antimony in the sample form soluble salts, and inductively coupled plasma
Emission spectrometer for quantitative determination. The sample is digested with aqua regia, and the total thallium in the sample is extracted with methyl isobutyl ketone and evaporated, and the residue
It was dissolved in nitric acid and quantitatively determined with an inductively coupled plasma emission spectrometer.
4 Reagents or materials
4.1 General provisions
When the specifications of the water used in this standard are not specified, the pH range and conductivity should meet the requirements in GB/T 6682
Secondary water specifications; the reagents used in this standard refer to analytical reagents unless other requirements are indicated; the standard titration used in this standard
The solution, standard solution, reagent solution and indicator solution are all prepared according to HG/T 2843 when the preparation method is not stated.
4.2 Nitric acid
pure superior grade.
4.3 Hydrochloric acid
pure superior grade.
4.4
Methyl isobutyl ketone.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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