Record Display for the EPA National Library Catalog

RECORD NUMBER: 37 OF 37

Main Title Xray, microscope and wet chemical techniques: a complimentary team for deposit analysis {microfiche}
Author Schock, M.R. ; Smothers., K. W.
CORP Author Environmental Protection Agency, Cincinnati, OH. Drinking Water Research Div. ;Illinois State Water Survey Div., Champaign. Aquatic Chemistry Section.;American Water Works Association, Denver, CO.
Publisher US Environmental Protection Agency
Year Published 1991
Report Number EPA/600/D-90/209
Stock Number PB91-137125
Additional Subjects Scale(Corrosion) ; Potable water ; Water chemistry ; Mineral deposits ; Water pipes ; Chemical analysis ; Electron microscopy ; X ray analysis ; Lead inorganic compounds ; Calcium inorganic compounds ; Water quality ; Reprints
Holdings
Library Call Number Additional Info Location Last
Modified		 Checkout
Status
NTIS  PB91-137125 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 15 p. : ill. ; 28 cm.
Abstract
Commonly used techniques for the analysis of potable water scale and corrosion deposits do not provide equivalent information about the chemical nature and significance of the deposits. Optical examination, with unaided eye and with microscopes, provides some useful information. X-Ray Fluorescence-based techniques, such as EDXA using a Scanning Electro Microscope, can give elemental analysis information for metals, but not anionic species (such as CO3, OH) that are very important in understanding scale and corrosion mechanisms. Wet chemical analyses can provide the most accurate analyses of metals and some other important constituents (eg, CO3, PO4, SiO2), but can be very laborious. None of these mentioned approaches can specifically identify compounds, which is frequently essential in understanding corrosion or scaling processes. X-ray diffraction, particularly when combined with the other methods, produces the information in most cases.
Notes
"EPA 600/D-90/209."