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ASTM D 1971 Document Information:
Title
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 International
Publication Date:
Mar 10, 2002
Scope:
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:
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.
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.
This practice assumes that the criteria established in Guide D
3856 can be met.
These digestion procedures have been selected for their wide
application, low cost, and ease of use.
The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
only.
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
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