ASTM-D1971 Standard Practices for Digestion of Water Samples for Determination of Metals by Flame Atomic Absorption, Graphite Furnace Atomic Absorption, Plasma Emission Spectroscopy, or Plasma Mass Spectrometry

ASTM-D1971 - 2016 R21(E1) EDITION - CURRENT
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Standard Practices for Digestion of Water Samples for Determination of Metals by Flame Atomic Absorption, Graphite Furnace Atomic Absorption, Plasma Emission Spectroscopy, or Plasma Mass Spectrometry
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1.1 Most atomic absorption and plasma emission spectroscopy, and plasma-mass spectrometric test methods require that the metals of interest be dissolved in a liquid phase before being introduced into the spectrophotometer. These practices describe digestion or dissolution procedures whereby analyte metals associated with the solid fraction of a sample can be brought into solution for subsequent analysis. The following practices are included:

Sections
Practice A-Digestion with Mineral Acids and Elevated Pressure 8 through 13
Practice B-Digestion with Mineral Acids and Heating at Atmospheric Pressure14 through 19
Practice C-In-bottle digestion with Mineral Acids20 through 25

1.2 These practices have been demonstrated to be applicable to a wide variety of sample types and sample matrices, and in many cases, will give complete dissolution of the analyte metals of interest. They are by no means the only digestion procedures available.

1.3 The user of these practices should be cautioned that these practices may not completely dissolve all portions of a sample's solid phase and may not give complete recovery of the desired analyte metals. In these cases, other digestion techniques are available that will effect complete dissolution of a sample. It is the user's responsibility to ensure the validity of these practices for use on their particular sample matrix, for their metals of interest.

1.4 This practice assumes that the criteria established in Guide D 3856 can be met.

1.5 These digestion procedures have been selected for their wide application, low cost, and ease of use.

1.6 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.7 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 establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific hazard statements are given in Section 6.

Keywords

digestion; flame atomic absorption spectroscopy; graphite furnace atomic absorption spectroscopy; inductively coupled plasma (ICP); metals; plasma-mass spectrometry ; waste water; water

To find similar documents by ASTM Volume:

11.01 (Water (I))

To find similar documents by classification:

77.040.30 (Chemical analysis of metals Chemical analysis in general, see 71.040.40 Chemical analysis of ferrous metals, see 77.080 Chemical analysis of ferroalloys, see 77.100 Chemical analysis of non-ferrous metals, see 77.120 Chemical analysis of sintered metals and hard metals, see 77.160)

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Document Number

ASTM-D1971-16R21E01

Revision Level

2016 R21(E1) EDITION

Status

Current

Modification Type

Revision

Publication Date

Dec. 22, 2021

Document Type

Practice

Page Count

6 pages

Committee Number

D19.05