GB/T 17144-2021 Petroleum products — Determination of carbon residue — Micro method

AI-translated method card — human verification pending. This is not an official translation of the standard. Unclear source values remain unverified; check the original standard and product certificate before use.

Card type: Test method

1. Method number / full title / English title / replacement relationship

• Standard number: GB/T 17144—2021
• Chinese full title: Petroleum products — Determination of carbon residue — Micro method
• English title: Petroleum products—Determination of carbon residue—Micromethod (the source text has “Determinatioanofcarbonresidue” at source-text extraction, requires confirmation against the source standard (source-text extraction))
• Replacement relationship: replaces GB/T 17144—1997 “Petroleum products — Determination of carbon residue (Micro method)”
• Adoption relationship: modified adoption of ISO 10370:2014 (MOD)
• Publication / implementation: published on 2021-10-11, implemented on 2022-05-01
• Issuing authorities: State Administration for Market Regulation, Standardization Administration of China

2. Scope of application and non-applicability

• The source text provides only the foreword; the main text of Clause 1 “Scope” is not provided in the available source.
• Foreword mentions: the scope has been changed (see Clause 1, Clause 1 of the 1997 edition).
• Foreword mentions: the two notes and the fourth paragraph of the scope in ISO 10370:2014 have been moved under the term in Clause 3.1, and the second paragraph has been moved into the introduction.
• Specific applicable products, carbon residue content range, and non-applicable situations: not provided in the available source.

3. Method principle

• The source text provides only the foreword; the main text of Clause 4 “Method summary” is not provided in the available source.
• Foreword mentions: the method summary has been changed (see Clause 4, Clause 5 of the 1997 edition).
• Specific principle: not provided in the available source.

4. Reagents and materials (purity / preparation)

• The source text provides only the foreword; the main text of the reagents and materials section is not provided in the available source.
• Foreword mentions: the provisions on sample tube material, the requirements for use of 4 mL sample tubes, and the description that sample tubes of other materials may be used have been changed (see 6.1, 7.1 of the 1997 edition).
• Specific reagents, materials, purity, preparation: not provided in the available source.

5. Apparatus and equipment

• The source text provides only the foreword; the main text of the apparatus and equipment section is not provided in the available source.
• Foreword mentions: the explanatory notes for parts in Figure 1 and Figure 2 have been changed (see 6.3, 6.4, 7.3, 7.4 of the 1997 edition).
• Foreword mentions: “green coke box” and “coking box” have been changed to “coking furnace” (see 6.3, 7.3 of the 1997 edition).
• Foreword mentions: reference numbers 7 have been added to Figure 2 of 6.4 in ISO 10370:2014 to indicate the reference position of the sample tube.
• Specific instrument names, specifications, requirements: not provided in the available source.

6. Recommended operating conditions

• The source text provides only the foreword; the main text of the recommended operating conditions is not provided in the available source.
• Foreword mentions: the sample sampling requirements in Table 1 have been modified, and content recommending the use of sample tubes has been added to Table 1 (see Clause 8, Clause 9 and Clause 10 of the 1997 edition).
• Specific operating conditions such as temperature, time, flow rate: not provided in the available source.

7. Sampling and sample preparation

• The source text provides only the foreword; the main text of the sampling and sample preparation section is not provided in the available source.
• Foreword mentions: sample preparation has been changed (see Clause 7, Clause 8 of the 1997 edition).
• Foreword mentions: “10%( volume fraction) distillation residue” has been changed to “10%( volume fraction) distillation residue” (see Clause 7, Clause 8 of the 1997 edition).
• Foreword mentions: the description of the procedure for preparing the middle distillate 10%( volume fraction) distillation residue specified in 7.3.2 of ISO 10370:2014 has been modified.
• Specific sampling amount and preparation steps: not provided in the available source.

8. Analysis procedure

• The source text provides only the foreword; the main text of the analysis procedure section is not provided in the available source.
• Foreword mentions: sample weighing has been incorporated into the test procedure clause, the sample sampling requirements in Table 1 have been modified, and content recommending the use of sample tubes has been added to Table 1 (see Clause 8, Clause 9 and Clause 10 of the 1997 edition).
• Foreword mentions: sample transfer in ISO 10370:2014 has been incorporated into the test procedure.
• Specific steps: not provided in the available source.

9. Qualitative and quantitative determination and calculation formulas

• The source text provides only the foreword; the main text of the calculation section is not provided in the available source.
• Foreword mentions: the calculation has been changed, and a statement of the relationship between the measured values of this method and the Conradson carbon residue method has been added (see Clause 9, Clause 11 of the 1997 edition).
• Specific calculation formulas: not provided in the available source.

10. Precision

• The source text provides only the foreword; the main text of the precision section is not provided in the available source.
• Foreword mentions: the repeatability limit and reproducibility limit for determining the carbon residue of middle distillate 10%( volume fraction) distillation residue using 4 mL sample tubes have been added (see Clause 11, Clause 12 of the 1997 edition).
• Specific repeatability limit and reproducibility limit values: not provided in the available source.

11. Report

• The source text provides only the foreword; the main text of the report section is not provided in the available source.
• Foreword mentions: “Report” has been changed to “Expression of results”, and the requirement to use the arithmetic mean of two replicate determination results as the reported value has been deleted (see Clause 10, Clause 13 of the 1997 edition).
• Foreword mentions: a test report has been added (see Clause 12).
• Specific report content and format: not provided in the available source.

12. Normative references

• The source text provides only the foreword; the list of normative references is not provided in the available source.
• Foreword mentions: this document has been drafted in accordance with GB/T 1.1—2020 “Directives for standardization — Part 1: Structure and drafting rules for standardization documents”.
• Foreword mentions: for ease of use, the referenced international documents have been replaced with corresponding Chinese documents.
• Foreword mentions: reference [4] of ISO 10370:2014 and the citation of that document have been deleted.
• Specific list of referenced documents: not provided in the available source.

13. Source and verification

This page is an AI translation of the available Chinese method card. Human verification is pending. It is not an official translation of the standard. Check the source standard and product certificate before use.

14. Quick reference Q&A