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Interlaboratory evaluation of a standardized inductively coupled plasma-mass spectrometry method for the determination of trace elements in air filter samples: preliminary results.

Authors
Ashley-K; Brisson-MJ; Howe-AM
Source
Anal Methods 2010 Nov; 2(11):1823-1826
NIOSHTIC No.
20037864
Abstract
An interlaboratory evaluation of a standardized inductively coupled plasma-mass spectrometry (ICPMS) method for determining trace elements in workplace air samples was carried out, toward fulfillment of method validation requirements for international voluntary consensus standard test methods. The interlaboratory study was performed in accordance with an applicable ASTM International standard practice, ASTM E691, which describes statistical procedures for investigating interlaboratory precision. Performance evaluation materials, prepared by a contract laboratory, consisted of mixed-cellulose ester filters that were spiked with 21 elements of interest at levels of 0.50 or 5.0 micrograms (mg) per filter. Triplicates of each spiked filter, plus media blanks spiked with blank reagent, were conveyed to each volunteer laboratory; spiking levels were unknown to the participants. The laboratories were requested to prepare the filter samples by one of the three sample preparation procedures (hotplate or microwave digestion or hotblock extraction) that are described in the standard test method, ASTM D7439. Participants were then asked to analyze aliquots of the prepared samples by ICP-MS using ASTM D7439, and to report their data in units of mg per filter sample. Preliminary interlaboratory precision and recovery estimates from 20 volunteer laboratories are reported.
Keywords
Air-quality-control; Air-quality-measurement; Air-sampling; Air-sampling-equipment; Mass-spectrometry; Laboratory-testing; Standards; Testing-equipment; Sample-preparation; Sampling-equipment; Analytical-instruments
Contact
Kevin Ashley, National Institute for Occupational Safety and Health, Division of Applied Research and Technology, 4676 Columbia Parkway, Mail Stop R-7, Cincinnati, OH 45226-1998
Publication Date
20101101
Document Type
Journal Article
Email Address
KAshley@cdc.gov
Fiscal Year
2011
NTIS Accession No.
NTIS Price
Issue of Publication
11
ISSN
1759-9660
NIOSH Division
DART
Priority Area
Manufacturing
Source Name
Analytical Methods
State
OH; SC
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