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Lead Pipe Scale Analysis Using Broad-Beam Argon Ion Milling to Elucidate Drinking Water Corrosion

Published online by Cambridge University Press:  01 February 2011

Mallikarjuna N. Nadagouda ,
Colin White  and
Darren Lytle
Mallikarjuna N. Nadagouda
Affiliation:
The U.S. Environmental Protection Agency, ORD, NRMRL, WSWRD, 26 W. MLK Dr., Cincinnati, OH 45268, USA
Colin White
Affiliation:
The U.S. Environmental Protection Agency, ORD, NRMRL, WSWRD, 26 W. MLK Dr., Cincinnati, OH 45268, USA
Darren Lytle*
Affiliation:
The U.S. Environmental Protection Agency, ORD, NRMRL, WSWRD, 26 W. MLK Dr., Cincinnati, OH 45268, USA
*
Corresponding author. E-mail: [email protected]
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Abstract

Herein, we characterized lead pipe scale removed from a drinking water distribution system using argon ion beam etching and a variety of solids analysis approaches. Specifically, pipe scale cross sections and solids were analyzed using scanning electron microscopy, energy dispersive X-ray analysis, X-ray diffraction, and acid digestion followed by inductively coupled plasma mass spectrometry analyses. The pipe scale consisted of at least five layers that contained Pb(II) and Pb(IV) minerals, and magnesium, aluminum, manganese, iron, and silicon solids. The outer layer was enriched with crystalline amorphous manganese and iron, giving it a dark orange to red color. The middle layers consisted of hydrocerussite and plattnerite, and the bottom layer consisted primarily of litharge. Over the litharge layer, hydrocerussite crystals were grown vertically away from the pipe wall, which included formations of plattnerite. Significant amounts of trace contaminant vanadium, likely in the form of vanadinite, and copper accumulated in the scale as well.

Keywords

lead scale analysision millingphasesX-ray diffractionSEMICP-MS
Type
Material Applications
Information
Microscopy and Microanalysis , Volume 17 , Issue 2 , April 2011 , pp. 284 - 291
Copyright
Copyright © Microscopy Society of America 2011

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Footnotes

The U.S. Environmental Protection Agency, through its Office of Research and Development, funded and managed, or partially funded and collaborated in, the research described herein. It has been subjected to the Agency's administrative review and has been approved for external publication. Any opinions expressed in this paper are those of the author(s) and do not necessarily reflect the views of the Agency, therefore, no official endorsement should be inferred. Any mention of trade names or commercial products does not constitute endorsement or recommendation for use.

References

REFERENCES

Federal Register (1991a). Drinking water regulations: Maximum contaminant level goals and national primary drinking water regulations for lead and copper, final rule; correction, CFR 40 CRF Parts 141 and 142. Federal Register 56(135), 32112.Google Scholar
Federal Register (1991b). Maximum contaminant level goals and national primary drinking water regulations for lead and copper, final rule. Federal Register 56(110), 26460.Google Scholar
Federal Register (1992). Drinking water regulations: Maximum contaminant level goals and national primary drinking water regulations for lead and copper, final rule; correcting amendments, CFR 40 CFR Parts 141 and 142. Federal Register 57(125), 28785.Google Scholar
Gerke, T.L., Scheckel, K.G. & Schock, M.R. (2009). Identification and distribution of vanadinite (Pb5(V5+O4)3Cl) in lead pipe corrosion by-products. Env Sci Technol 43, 4412–4418.CrossRefGoogle Scholar
Gouider, M., Bouzid, J., Sayadi, S. & Montiel, A. (2009). Impact of orthophosphate addition on biofilm development in drinking water distribution systems. J Hazardous Mater 167, 1198–1202.CrossRefGoogle ScholarPubMed
Lasheen, M.R., Sharaby, C.M., El-Kholy, N.G., Elsherif, I.Y. & El-Wakeel, S.T. (2008). Factors influencing lead and iron release from some Egyptian drinking water pipes. J Hazard Mater 160, 675–680.CrossRefGoogle ScholarPubMed
Levin, R., Brown, M.J., Kashtock, M.E., Jacobs, D.E., Whelan, E.A., Rodman, J., Schock, M.R., Padilla, A. & Sinks, T. (2008). Lead exposures in U.S. children, 2008: Implications for prevention. Env Health Perspec 116, 1285–1293.CrossRefGoogle ScholarPubMed
Liu, H., Korshin, G.V. & Ferguson, J.F. (2008). Investigation of the kinetics and mechanisms of the oxidation of cerussite and hydrocerussite by chlorine. Env Sci Technol 42, 3241–3247.CrossRefGoogle ScholarPubMed
Lytle, D.A., Schock, M.R. & Scheckel, K. (2009a). The inhibition of Pb(IV) oxide formation in chlorinated water by orthophosphate. Environ Sci Technol 43, 6624–6631.CrossRefGoogle ScholarPubMed
Lytle, D.A., White, C., Nadagouda, M.N. & Worrall, A. (2009b). Crystal and morphological phase transformation of Pb(II) to Pb(IV) in chlorinated water. J Hazard Mater 165, 1234–1238.CrossRefGoogle Scholar
Moore, M.R. (1973). Plumbosolvency of waters. Nature 243, 222–223.CrossRefGoogle Scholar
Morse, D.L., Watson, W.N., Housworth, J., Witherell, L.E. & Landrigan, P.J. (1979). Exposure of children to lead in drinking water. Am J Publ Health 69, 711–712.CrossRefGoogle ScholarPubMed
Nadagouda, M.N., Schock, M., Metz, D.H., DeSantis, M.K., Lytle, D. & Welch, M. (2009). Effect of phosphate inhibitors on the formation of lead phosphate/carbonate nanorods, microrods and dendritic structures. Cryst Growth Des 9, 1798–1805.CrossRefGoogle Scholar
Schock, M., Hyland, R. & Welch, M. (2008). Occurrence of contaminant accumulation in lead pipe scales from domestic drinking-water distribution systems. Env Sci Technol 42, 4285–4291.CrossRefGoogle ScholarPubMed
Wang, E.X. & Benoit, G. (1996). Mechanisms controlling the mobility of lead in the spodosols of a northern hardwood forest ecosystem. Env Sci Technol 30, 2211–2219.CrossRefGoogle Scholar