ASTM D4239 PDF

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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Details and supporting information are given in Research Report RR: The remaining material can be used for instrument conditioning. The gas stream is then passed through a cell in which sulfur dioxide is measured by an infrared IR absorption detector. Analyze a test portion of reference material s 7. No other units of measurement are included in this standard. Unless otherwise indicated, it is intended that all reagents conform to the speci?

This standard has been approved for use by agencies of the Department of Defense. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

If the value determined for each reference material employed for veri? Do not allow contact with organic materials or reducing agents.

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The cokes used in this study included furnace coke, foundry coke and coke breeze. This standard is subject to revision at any time by the responsible technical committee and must be reviewed x4239 It is normally heated electrically using resistance wire.

Warning—Tungsten Oxide is a strong oxidizing agent. The gas stream is passed through a cell in which sulfur dioxide is measured by an infrared Zstm absorption detector.

The dd4239 expressed as the con? Moisture and particulates are removed from the gas by? Use at least three such reference materials, for each range of sulfur values to be tested. Verify all regulators, lines, and valves are free of grease and oil. Energy is absorbed as the gas passes through the cell body in 3 Available from International Organization for Standardization ISO1, ch. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.

All other IR energy is eliminated from reaching the detector by a precise wavelength? Analyze the test samples using the apparatus conditions employed for calibration.

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

Do not regenerate the absorbent. Last previous edition approved in as D — Moisture and particulates are removed from asm combustion gas by?

Summary of Test Method 3. Sulfur is oxidized during the reaction of the sample and WO3.

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ASTM D4239 – 17

Do not use the reference material for calibration or calibration veri? Users of this standard are expressly ashm that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. Permission rights to photocopy the standard may also be secured from the ASTM website www.

Analyze the test samples using the apparatus conditions employed for calibration 8. Use a mass that does not exceed the aetm mass used for instrument calibration and with a sulfur value within the range of the instrument calibration. Warning—Pure oxygen vigorously accelerates combustion.

B Where X is the average of two single test results.

Twelve laboratories participated qstm this study. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. C, the sulfur and sulfur compounds contained in the sample are decomposed and oxidized almost exclusively to gaseous sulfur dioxide, SO2.

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