Standard reference materials for chemical and biological studies of complex environmental samples

Area of Science:

• Environmental Science
• Analytical Chemistry
• Toxicology

Background:

• Standard Reference Materials (SRMs) from the National Institute of Standards and Technology (NIST) are vital for method development and interlaboratory comparisons.
• SRMs like 1649 (urban dust/organics), 1650 (diesel particulate matter), and 1597 (coal tar PAHs) are widely used by researchers.

Purpose of the Study:

• To summarize the chemical and biological characterization of three key NIST environmental SRMs.
• To highlight the utility of these SRMs in validating analytical methods for polycyclic organic compounds.
• To provide information on other relevant NIST SRMs for similar studies.

Main Methods:

• Review of published and unpublished data on the chemical and biological properties of SRMs 1649, 1650, and 1597.
• Analysis of their application in method validation and interlaboratory studies.
• Consideration of their use in bacterial bioassays and bioassay-directed techniques.

Main Results:

• These SRMs are homogeneous and readily available, facilitating their widespread use.
• They have been instrumental in validating analytical procedures for polycyclic organic compounds in complex matrices.
• Their application extends to bacterial bioassays and the development of advanced analytical techniques.

Conclusions:

• NIST environmental SRMs are essential tools for ensuring accuracy and comparability in environmental chemical analysis.
• These materials support advancements in analytical methodology and toxicological assessments.
• The characterized SRMs contribute to international collaborative studies, such as those coordinated by the World Health Organization.