GB/T 33687-2017General testing rules for gangue (English PDF)

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009.

1 Scope

This standard specifies the general rules, samples, assays, solutions and concentrations of coal gangue tests, the results of the presentation, the precision of the method, the test record and Test Report.

This standard applies to the inspection of coal gangue.

2 Normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this document. For undated references, the latest edition (including all modifications) applies to this document.

GB/T 601 Chemical reagents - Preparation of standard titration solutions

GB 3100 International System of Units and Their Applications

GB/T 3101 General principles of quantity, unit and symbol

GB/T 3102 (all parts) quantities and units

GB/T 6379.2 Accuracy of measurement methods and results (accuracy and precision) - Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method

GB/T 6682 Analytical laboratory water specifications and test methods

GB/T 8170 Representation and judgement of numerical correction rules and limiting values

3 General

3.1 Coal gangue test methods listed in the method can be used for arbitration analysis, verification of other analytical methods, the standard material value analysis and routine analysis.

3.2 Coal gangue inspection standards in the same project if there are two or more test methods, according to the composition and content of samples and Demand situation.

3.3 System (repair) set coal gangue test methods, should use the latest international atomic weight.

3.4 The quantities, units and symbols of substances shall be carried out in accordance with the requirements of GB 3100, GB/T 3101 and GB/T 3102.

3.5 Digital covenant method according to the provisions of GB/T 8170.

3.6 Analysis of the indicators used in the test regardless of specifications, other reagents that do not specify the specifications, are analytical pure (AR), when the need for other rules Should be described separately. At the same time should pay attention to the preservation of reagents and effective time.

3.7 The specifications of the test water shall comply with the provisions of GB/T 6682.

3.8 Analysis of the reference material used in the test, the standard solution should be checked and compared.

3.9 All instruments, equipment and measuring instruments that are used in the inspection to affect the accuracy of the analytical results shall be within the validity of the test/calibration period.

3.10 Capacity equipment (capacity bottles, buretors, pipettes, color tubes, etc.) should use the national standard A-level products, according to the relevant provisions calibration.

3.11 Preparation, storage reagent solution, the general use of hard glass containers. Corrosive to containers, easily decomposed reagents, and for samples Contamination, adsorption of the container, should specify the container material, storage precautions and storage time.