GB/T 44341-2024Determination of total sulfur in fertilizers - High temperature combustion (English PDF)
肥料中总硫含量的测定 高温燃烧法
This is a limited preview
Buy now to download the full PDF (20 pages)
Need quotation for your management?
Get a formal quotation for GB/T 44341-2024 in 30 minutes.
Issued by
State Administration for Market Regulation, China National Standardization Administration
Level / Type
National · Recommended
Issue date
August 23, 2024
Implementation date
August 23, 2024
Scope
GB/T 44341-2024 is the English-translated version of 肥料中总硫含量的测定 高温燃烧法.
GB/T 44341-2024 — This document describes a method for the determination of total sulfur content in fertilizers and soil conditioners. This method is applicable to solid fertilizers, liquid fertilizers and fertilizer raw materials with a total sulfur content of 0.1% to 97.0%.
Found what you need?
Document preview — GB/T 44341-2024
National Standard of the People's Republic of China
- ICS
- 65.080
- Classification
- G 20
Issued by: State Administration for Market Regulation, China National Standardization Administration
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Principle
- 5 Instruments, Materials, and Reagents
- 5.1 Overview
- 5.2 Instruments
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting is required.
This document is equivalent to ISO 22887.2020 "Determination of total sulfur content in fertilizers by high-temperature combustion method".
The following minimal editorial changes were made to this document.
Changed the name of the standardization document to harmonize with the existing standardization document. -
1 Scope
This document describes a method for the determination of total sulfur content in fertilizers and soil conditioners.
This method is applicable to solid fertilizers, liquid fertilizers and fertilizer raw materials with a total sulfur content of 0.1% to 97.0%.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies.
in this document.
ISO 8157 Terminology for fertilizers, soil conditioners and beneficial substances
stances-Vocabulary
Note. GB/T 6274-2016 Terminology of fertilizers and soil conditioners (ISO 8157.1984, NEQ)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 8157 apply.
4 Principle
The sulfur (S) in the samples and standard substances is burned at a temperature above 1100°C and converted into sulfur dioxide (SO2).
The mass fraction (%) of total sulfur can be determined by a thermal conductivity detector (TCD) or an infrared detector (IR).
Other elements such as carbon (C), hydrogen (H) or nitrogen (N) need to be separated from sulfur dioxide by thermal adsorption or desorption.
5 Instruments, Materials, and Reagents
5.1 Overview
Warning - Improper operation of the combustion method for elemental analysis may result in burns, as some instrument parts may
Even after the instrument is turned off, some components remain hot for a long time. If you do not use the instrument carefully, you may
Severe burns can occur. Follow the manufacturer's specific operating instructions to ensure safe use of the instrument.
Depending on the test method chosen, different types of instruments can be used to determine total sulfur content.
5.2 Instruments
5.2.1 Type A instrument. combustion instrument with conductivity detector
The A-type instrument shown in Figure 1 uses helium or argon as the carrier gas and a thermal conductivity detector (TCD) to measure sulfur (SO2) content.
When using this equipment, it is advisable to remove all air impurities in the gas path before injecting the sample.
At 1100 °C, oxygen is supplied to the sample to convert all elements into their corresponding fully oxidized gases. A catalyst is used in the combustion tube.
(such as tungsten trioxide) to assist oxidation. After combustion, the gas passes through the reducing environment and halogen scrubber in turn, converting the nitrogen oxides in the gas into
Nitrogen and halogen impurities are removed. Other combustion gases such as carbon dioxide, water and sulfur dioxide are washed or adsorbed in their respective
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 20 pages — is available in the English PDF.
Referenced standards
Normative references
ISO 8157 · ISO 8157.1984
How to Download GB/T 44341-2024
- 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 6274-2016 — Fertilizers and soil conditioners - Vocabulary
GB/T 10003-2026 — Biaxially oriented polypropylene (BOPP) film
GB/T 10004-2026 — Plastic/Plastic laminated films and pouches for packaging
Secure payment via Stripe
Payments accepted
GB/T 44341-2024
$195.00