GB/T 8151.23-2020Methods for chemical analysis of zinc concentrates - Part 23: Determination of mercury content - Solid sampling and direct mercury analysis method (English PDF)
锌精矿化学分析方法 第23部分：汞含量的测定 固体进样直接法
This is a limited preview
Buy now to download the full PDF (15 pages)
Need quotation for your management?
Get a formal quotation for GB/T 8151.23-2020 in 30 minutes.
Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
September 29, 2020
Implementation date
August 1, 2021
Scope
GB/T 8151.23-2020 is the English-translated version of 锌精矿化学分析方法 第23部分：汞含量的测定 固体进样直接法.
GB/T 8151.23-2020 is the Chinese standard "Methods for chemical analysis of zinc concentrates - Part 23: Determination of mercury content - Solid sampling and direct mercury analysis method".
Its scope clause reads: This part of GB/T 8151 specifies the method for the determination of mercury content in zinc concentrate. This section applies to the determination of mercury content in zinc concentrate.
Measuring range. 0.50µg/g~150µg/g. This method is suitable for the arbitration of the mercury content of 0.50µg/g~5µg/g in zinc concentrate. Its clauses include method summary; reagent; instruments.
Found what you need?
Document preview — GB/T 8151.23-2020
National Standard of the People's Republic of China
- ICS
- 77.120.60
- Classification
- H 13
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Method summary
- 4 reagent
- 5 Instruments
1 Scope
This part of GB/T 8151 specifies the method for the determination of mercury content in zinc concentrate.
This section applies to the determination of mercury content in zinc concentrate. Measuring range. 0.50µg/g~150µg/g.
This method is suitable for the arbitration of the mercury content of 0.50µg/g~5µg/g in zinc concentrate.
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 article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB/T 6682 Analytical laboratory water specifications and test methods
3 Method summary
In an oxygen atmosphere, after the sample is dried and thermally decomposed at a high temperature in the decomposition furnace, the mercury is atomized, and the mercury vapor is brought into a single wavelength by the oxygen flow
Optical absorption cell, measuring the absorbance (peak height or peak area) of mercury at a wavelength of 253.7nm, and calculating the mercury content using the standard curve method.
4 reagent
Unless otherwise specified, only reagents confirmed to be superior grade and above purity are used in the analysis, and the water used meets the requirements of GB/T 6682
Secondary water.
4.1
Nitric acid (rho=1.42g/mL).
4.2
Nitric acid (1 19).
4.3 Potassium dichromate solution (10g/L)
Weigh 1g of potassium dichromate and dissolve it in 100mL of water.
4.4 Mercury standard storage solution
Weigh 1.3540g of mercury dichloride that has been pre-dried with phosphorus pentoxide for 24 hours, place it in a 250mL beaker, and add
Dissolve in a small amount of water, then add 50mL nitric acid (4.1), 10mL potassium dichromate solution (4.3), transfer to a 1000mL volumetric flask, and dilute with water
To the mark, mix well. This solution 1mL contains 1000µg mercury. Or directly use certified reference materials.
4.5
Mercury standard solution A. Pipette 10.00mL mercury standard stock solution (4.4) into a 100mL volumetric flask, add 1mL potassium dichromate
Solution (4.3), dilute to the mark with nitric acid (4.2), and mix. This solution 1mL contains 100µg mercury.
4.6 Mercury standard solution B
Pipette 10.00mL mercury standard solution A (4.5) into a 100mL volumetric flask, add 1mL potassium dichromate solution (4.3), dilute to the mark with nitric acid (4.2) and mix well. This solution 1mL contains 10µg mercury.
4.7
Oxygen (wO2>=99.99%).
5 Instruments
Direct mercury meter. The instrument parameters are set according to the recommended conditions given in Appendix A.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Similar standards
How to Download GB/T 8151.23-2020
- 1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
- 2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
- 3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
- 4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.
Related Standards
GB/T 8151.24-2021 — Methods for chemical analysis of zinc concentrates—Part 24: Determination of soluble zinc content—Flame atomic absorption spectrometry
GB/T 8151.22-2020 — Methods for chemical analysis of zinc concentrates—Part 22: Determination of zinc, copper, lead,iron,aluminium,calcium and magnesium contents—Wavelength dispersive X-ray fluorescence spectrometric method
GB/T 8151.25-2023 — Methods for chemical analysis of zinc concentrates - Part 25: Determination of indium content - Flame atomic absorption spectrometry
Secure payment via Stripe
Payments accepted
GB/T 8151.23-2020
$105.00