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ASTM D 6502 Document Information:
Title
Standard Test Method for Continuous Measurement of On-line Composite Samples of Low Level Filterable Matter (Suspended Solids) and Non- Filterable Matter (Ionic Solids) in Process Water by X-Ray Fluorescence (XRF)
ASTM International
Publication Date:
May 1, 2008
Scope:
This test method covers the operation, calibration, and data
interpretation for an on-line corrosion product (metals) monitoring
system. The monitoring system is based on x-ray fluorescence (XRF)
analysis of metals contained on membrane filters (for particulate
forms) or resin membranes (for dissolved forms). Since the XRF
detector is sensitive to a range of emission energy, this test
method is applicable to simultaneous monitoring of the
concentration levels of several metals including titanium,
vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc,
mercury, lead, and others in a flowing sample. A detection limit
below 1 ppb can be achieved for most metals.
This test method includes a description of the equipment
comprising the on-line metals monitoring system, as well as,
operational procedures and system specifications.
The values stated in SI units are to be regarded as standard. No
other units of measurement are included in this standard.
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.
Keywords:
- corrosion products
- metals
- on-line monitoring
- water quality
- x-ray fluorescence
- XRF
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