ASTM International - ASTM D934-13

Standard Practices for Identification of Crystalline Compounds in Water-Formed Deposits By X-Ray Diffraction

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Organization: ASTM International
Publication Date: 1 January 2013
Status: active
Page Count: 10
ICS Code (Sewage water): 13.060.30
significance And Use:

5.1 The identification of the crystalline structures in water-formed deposits assists in the determination of the deposit sources and mode of deposition. This information may lead to measures for... View More

scope:

1.1 These practices provide for X-ray diffraction analysis of powdered crystalline compounds in water-formed deposits. Two are given as follows:

  Sections
Practice A-Camera 12 to 21
Practice B-Diffractometer 22 to 30

1.2 Both practices yield qualitative identification of crystalline components of water-formed deposits for which X-ray diffraction data are available or can be obtained. Greater difficulty is encountered in identification when the number of crystalline components increases.

1.3 Amorphous phases cannot be identified without special treatment. Oils, greases, and most organic decomposition products are not identifiable.

1.4 The sensitivity for a given component varies with a combination of such factors as density, degree of crystallization, particle size, coincidence of strong lines of components and the kind and arrangement of the atoms of the components. Minimum percentages for identification may therefore range from 1 to 40 %.

1.5 The values stated in SI units are to be regarded as standard. The values listed in parenthesis are for information only.

1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in Section 8 and Note 20.

Document History

ASTM D934-13
January 1, 2013
Standard Practices for Identification of Crystalline Compounds in Water-Formed Deposits By X-Ray Diffraction
1.1 These practices provide for X-ray diffraction analysis of powdered crystalline compounds in water-formed deposits. Two are given as follows:   Sections Practice A—Camera 12 to 21 Practice...
October 1, 2008
Standard Practices for Identification of Crystalline Compounds in Water-Formed Deposits By X-Ray Diffraction
1.1 These practices provide for X-ray diffraction analysis of powdered crystalline compounds in water-formed deposits. Two are given as follows: Sections Practice A—Camera 12 to 21 Practice...
June 10, 1999
Standard Practices for Identification of Crystalline Compounds in Water-Formed Deposits By X-Ray Diffraction
1.1 These practices provide for X-ray diffraction analysis of powdered crystalline compounds in water-formed deposits. Two are given as follows: Sections Practice A---Camera 12 to 21 Practice...
July 3, 1980
Standard Practices for Identification of Crystalline Compounds in Water-Formed Deposits By X-Ray Diffraction
1.1 These practices provide for X-ray diffraction analysis of powdered crystalline compounds in water-formed deposits. Two are given as follows: Sections Practice A-Camera 12 to 21 Practice...
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