Astm D 5074 – 90 (Reapproved 2003) pdf free download

Standard Practice for
Preparation of Natural-Matrix Sediment Reference Samples
for Major and Trace Inorganic Constituents Analysis by
Partial Extraction Procedures1

This standard is issued under the fixed designation D 5074; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of the last revision. A number in parentheses indicates the year of the last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.

1. Scope

1.1 This practice covers uniform procedures to develop,
select, collect, prepare, and use oxidized, relatively unpolluted,
aquatic natural-matrix bed-sediment reference samples for the
collaborative testing of chemical methods of analysis for
sediments and similar materials. Reference samples prepared
using this practice are intended for use as natural sediments,
analyzable for major, minor, and trace elements, and general
physical/organic analyses only. The samples are not designed
or tested for environmental pollutants such as trace organic

1.2 Few, if any, aquatic sediment reference materials have
been certified, defined, or are even available for development or
evaluating partial and sequential extraction procedures. This
practice describes factors and considerations in site selection,
sample characteristics, collection, and subsequent raw sample
treatment needed to prepare natural-matrix bed-material sediments for use as partial or sequential extraction procedure
reference test samples. The user of this practice is cautioned
that in light of the many variables that may affect natural
materials, neither the list of factors included for evaluation nor
preparation of natural-matrix reference samples should be
considered as all-inclusive. It is the user’s responsibility to
ensure the validity and applicability of these practices for
preparing specific-matrix samples appropriate for testing the
constituents of interest and the operationally defined extraction
procedures utilized.

1.3 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.

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