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  • ASTM
    D934-13 Standard Practices for Identification of Crystalline Compounds in Water-Formed Deposits By X-Ray Diffraction
    Edition: 2013
    $93.60
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Description of ASTM-D934 2013

ASTM D934 - 13

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

Active Standard ASTM D934 | Developed by Subcommittee: D19.03

Book of Standards Volume: 11.02




ASTM D934

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. 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 ACamera

12 to 21

Practice BDiffractometer

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 .


2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D887 Practices for Sampling Water-Formed Deposits

D933 Practice for Reporting Results of Examination and Analysis of Water-Formed Deposits

D1129 Terminology Relating to Water

D1193 Specification for Reagent Water

D2331 Practices for Preparation and Preliminary Testing of Water-Formed Deposits

E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves


Keywords

crystallographic examination; deposits; metal oxides; scale; x-ray diffraction;


ICS Code

ICS Number Code 13.060.30 (Sewage water)


DOI: 10.1520/D0934-13

ASTM International is a member of CrossRef.

ASTM D934

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About ASTM

ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.
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