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.

Author: Meztiramar Mebei
Country: Armenia
Language: English (Spanish)
Genre: Sex
Published (Last): 23 January 2004
Pages: 360
PDF File Size: 11.14 Mb
ePub File Size: 16.3 Mb
ISBN: 192-2-51171-780-9
Downloads: 56397
Price: Free* [*Free Regsitration Required]
Uploader: Feshakar

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

Unless otherwise indicated, it is intended that all reagents conform to the speci? B Where X is the average of two single test results. Originally approved in Do not regenerate the absorbent. Current edition approved Feb. 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. All other IR energy is eliminated from reaching the detector by a precise wavelength?

Verify the instrument calibration prior to analyzing test samples, upon completion of all test samples and as needed to meet quality control requirements. Select two additional reference materials, one approximately at the mid-point of the range and one below the lowest level of sulfur expected. Weigh to at least the nearest 1 mg and evenly spread the test portion of the reference material into the sample combustion boat 6.

In addition, information for coke was calculated per E using 48 sets of data for 24 coke samples from a commercially available interlaboratory pro? The cokes used in this study included furnace coke, foundry coke and coke breeze. 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. Verify all regulators, lines, and valves are free of grease and oil. It is normally heated electrically using resistance rods, a resistance wire, or molybdenum disilicide elements.

  ASTM D1322 PDF

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

Precision and Bias Energy is absorbed as the gas passes through the cell body in which the IR energy is being transmitted: Select one reference material containing ast, least as much sulfur as the highest level of sulfur expected.

Supporting data have been? Sulfur dioxide absorbs IR energy at a precise wavelength within the IR spectrum. Total sulfur as sulfur dioxide is detected on a continuous basis. The remaining material can be used for instrument conditioning. No other units of measurement are included in xstm standard. Sulfur is oxidized during the reaction of the sample and WO3. The gas stream is passed through a cell in which sulfur dioxide is measured by an infrared IR absorption detector. If the value determined for each reference material employed for veri?

Moisture and particulates are removed from the gas by? Do not allow contact with organic materials or reducing agents.

Moisture and particulates are removed from the combustion gas by? 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.

Use a mass that does not exceed the maximum mass used for instrument calibration and with a sulfur value within the range of the instrument calibration. During combustion at temperatures above ?

ASTM D4239 – 17

A number in parentheses indicates the year of last reapproval. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

  EL PSIQUISMO CREADOR FIORINI PDF

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

Warning—Tungsten Oxide is a strong oxidizing agent. One cell is used as both a reference and a measurement chamber. Analyze a e4239 portion of reference material s 7.

Analyze the test samples using the apparatus conditions employed for calibration 8. Warning—Pure oxygen vigorously accelerates combustion.

Permission rights to photocopy the standard may also be secured from the ASTM website www. 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. Last previous edition approved in as D — Use at least three such reference materials, for each range of sulfur values to be tested. Calculation to Other Bases 9.

Use a mass of material and the calibration procedure recommended by the apparatus manufacturer.

Asstm a material with a sulfur value near the mid point of the expected calibration range. It is normally heated electrically using resistance wire. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?

Thus, the absorption of IR energy can be attributed only to sulfur dioxide whose concentration is proportional to the change in energy at the detector. Twelve laboratories participated in this study.

Details and supporting information are given in Research Report RR: