Effect of Ozonated High‐Purity Deionized Water on Polyvinyl Chloride Pipe

Sinha, Drew

doi:10.1149/1.2044302

Cited by 2 publications

(1 citation statement)

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“…Menthe et al (1995) used XPS to locate corrosion present on stainless steel and Krawiec et al (2006) used XPS to characterize corrosion on ductile iron. Sinha (1995) used XPS to investigate the oxidative degradation of PVC pipe due to the presence of dissolved ozone in water. In this study XPS was used to examine pipe surfaces exposed to malathion.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Malathion Onto Copper and Iron Surfaces Relevant to Water Infrastructure

et al. 2017

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This study investigated the adsorption of malathion to copper and iron surfaces including microspheres and pipe specimens similar to those in drinking water infrastructure. The solid phase concentration of malathion on the virgin and used copper pipe specimens was generally between 0.2-1 mg/g. The adsorption capacity for copper and iron microspheres were greater than those of the pipe specimens because of their higher surface area-to-volume ratios. Copper materials adsorbed more malathion than comparable iron materials. XPS analysis of copper and iron surfaces revealed peaks at 164 eV (S 2p) and 135 eV (P 2p), which suggests that malathion chemically bonded to the surfaces of the specimens. Metal oxides likely formed stable bonds with phosphorus through pi conjugation. These findings are the first to show that malathion can chemically adhere to copper and iron pipe materials. This insight is critical for understanding the decontamination strategies needed for water networks.

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Section: Introductionmentioning

confidence: 99%