Standard Practices for Identification of Crystalline Compounds in Water-Formed Deposits By X-Ray Diffraction
STANDARD published on 1.1.2013
Designation standards: ASTM D934-13
Publication date standards: 1.1.2013
The number of pages: 10
Approximate weight : 30 g (0.07 lbs)
Country: American technical standard
Category: Technical standards ASTM
crystallographic examination, deposits, metal oxides, scale, x-ray diffraction, ICS Number Code 13.060.30 (Sewage water)
|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 the elimination or reduction of the water-formed deposits.
1.1 These practices provide for X-ray diffraction analysis of powdered crystalline compounds in water-formed deposits. Two are given as follows:
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
Specification for Woven Wire Test Sieve
Cloth and Test Sieves Practices for Sampling Water-Formed
Deposits Practices for Preparation and Preliminary
Testing of Water-Formed Deposits Practice for Reporting Results of
Examination and Analysis of Water-Formed Deposits Terminology Relating to Water Specification for Reagent Water
Specification for Woven Wire Test Sieve Cloth and Test Sieves
Practices for Sampling Water-Formed Deposits
Practices for Preparation and Preliminary Testing of Water-Formed Deposits
Practice for Reporting Results of Examination and Analysis of Water-Formed Deposits
Terminology Relating to Water
Specification for Reagent Water
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