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Field Portable X-ray Fluorescence Analyzer
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TN Spectrace TN 9000 and TN Pb Field Portable
X-ray Fluorescence Analyzers(11.8Mb)
Field Portable X-ray Fluorescence Analyzer
Spectrace TN 9000 and TN Pb
Field Portable X-ray Fluorescence Analyzers
Abstract The
U.S. Environmental Protection Agency (EPA) conducted a demonstration of
field portable X-ray fluorescence (FPXRF) analyzers, in April 1995, at
the RV Hopkins site in Iowa and the ASARCO Tacoma Smelter in Washington.
The primary objectives of this demonstration were to determine how well
FPXRF analyzers perform in comparison to standard reference methods, to
identify the effects of sample matrix variations on the performance of
FPXRF, to determine the logistical and economic resources needed to operate
these analyzers, and to test and validate an SW-846 draft method for FPXRF
analysis. Two of the analyzers manufactured by TN Spectrace, the TN 9000
and the TN Pb Analyzer, were used in this demonstration. Based on a real-time
basis, the TN Pb Analyzer reported fewer target analytes than the TN 9000
and used shorter count times. The shorter count times resulted in a nearly
two- to threefold increase in sample throughput. Both the TN 9000 and
the TN Pb analyzers provided definitive level quality data for arsenic,
lead, zinc, and copper. There are special radiation safety training requirements
and costs associated with this type of operation. The TN 9000 and the
TN Pb Analyzer were both effective tools for field based analysis of metals
contamination in soil and may allow investigation or remediation decisions
to be made more efficiently on-site which may reduce the number of samples
that need to be submitted for confirmatory analysis.
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Posted August 2, 1999
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