By the Authority Vested By Part 5 of the United States Code § (a) and. Part 1 of the Code of Regulations § 51 the attached document has been duly. Buy ASTM D Standard Test Method for Sulfur in the Analysis Sample of Coal and Coke Using High-Temperature Tube Furnace. ASTM D Standard Test Method for Sulfur in the Analysis Sample of Coal and Coke Using High- Temperature Tube Furnace Combustion.

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The gas stream is passed through a cell in which sulfur dioxide is measured by an infrared IR absorption detector.

ASTM D高温燃烧方式测定煤及焦碳中硫含量的标准实验方法_百度文库

ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Moisture and particulates are removed from the gas by? Analyze a test portion of reference material s 7. No other units of measurement are included in this standard.

Do not regenerate the absorbent. A number in parentheses indicates the year of last reapproval. D42239 two additional reference materials, one approximately at the mid-point of the range and one below the lowest level of sulfur expected.

Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. If the value determined for each reference material employed for veri?


B Where X is the average of two single test results. Use a mass of material and the calibration procedure recommended by the apparatus manufacturer. The uncertainty expressed as the con? It is normally heated electrically using resistance wire.

Sulfur is oxidized during the reaction of the sample and WO3. Warning—Tungsten Oxide is a strong oxidizing agent.

Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.

Energy is absorbed as the gas passes through the cell body in 3 Available from International Organization for Standardization ISO1, ch.

Use a mass that does not exceed the maximum mass used for instrument calibration and with a sulfur value within the range of the aatm calibration. Select one reference material containing at least as much sulfur as the highest level of sulfur expected. All other IR energy is eliminated from reaching the detector by a precise wavelength?

Other materials that are coal s or coke s with documented traceability to reference material CRM coal s or coke s prepared by a national metrology body can also be used. Details and supporting information are given in Research Report RR: Verify the instrument calibration prior to analyzing test samples, upon completion of all test samples and as needed to meet quality control requirements. During combustion at temperatures above ? Weigh to at least the nearest 1 mg and evenly spread the test portion of the reference material into the sample combustion boat 6.


Originally approved in The remaining material can be used for instrument conditioning. Position the sample in the hot zone of the furnace until the instrument returns to baseline as indicated according to settings recommended by the manufacturer.

The cokes used in this study included furnace coke, foundry coke and coke breeze. Calculation to Other Bases 9.

ASTM D4239 – 17

Analyze the test samples using the apparatus conditions employed for calibration. The gas stream is then passed through a cell in which sulfur dioxide is measured by an infrared IR absorption detector.

Precision and Bias Twelve laboratories participated in this study. C, the sulfur and sulfur compounds contained in the sample are decomposed and oxidized almost exclusively satm gaseous sulfur dioxide, SO2. If the analysis time exceeds the maximum analysis time recommended by the manufacturer take corrective action as recommended by the manufacturer.