Atmospheric corrosion effects of air pollution on materials and cultural property in Kathmandu, Nepal

J. Tidblad; K. Hicks; J. Kuylenstierna; B. B. Pradhan; P. Dangol; I. Mylvakanam; S. B. Feresu; C. Lungu

doi:10.1002/maco.201408043

Atmospheric corrosion effects of air pollution on materials and cultural property in Kathmandu, Nepal

J. Tidblad^*, K. Hicks, J. Kuylenstierna, B. B. Pradhan, P. Dangol, I. Mylvakanam, S. B. Feresu, C. Lungu

^*Corresponding author for this work

Stockholm Environment Institute at York

Research output: Contribution to journal › Article › peer-review

Abstract

Carbon steel, zinc and limestone samples were exposed in Kathmandu for one year. Their corrosion was measured at ten locations and related to SO₂, NO₂, O₃, HNO₃ and PM concentrations and climatic factors. Corrosion rates vary considerably and are correlated mainly with the SO₂ concentration. Estimated policy targets for SO₂ are most stringent for limestone, in the range 3 to 6 μg m^-3. The Kathmandu carbon steel and limestone samples matched a general pattern from exposures at more than twenty sites in Asia and Africa. At these Asian/African sites corrosion of copper is generally higher than corrosion of zinc. This is in contrast to experiences from European conditions where corrosion of zinc is higher than corrosion of copper.

Original language	English
Pages (from-to)	170-175
Number of pages	6
Journal	Materials and Corrosion
Volume	67
Issue number	2
DOIs	https://doi.org/10.1002/maco.201408043
Publication status	Published - 1 Feb 2016

Keywords

atmospheric corrosion
Kathmandu

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abstract = "Carbon steel, zinc and limestone samples were exposed in Kathmandu for one year. Their corrosion was measured at ten locations and related to SO2, NO2, O3, HNO3 and PM concentrations and climatic factors. Corrosion rates vary considerably and are correlated mainly with the SO2 concentration. Estimated policy targets for SO2 are most stringent for limestone, in the range 3 to 6 μg m-3. The Kathmandu carbon steel and limestone samples matched a general pattern from exposures at more than twenty sites in Asia and Africa. At these Asian/African sites corrosion of copper is generally higher than corrosion of zinc. This is in contrast to experiences from European conditions where corrosion of zinc is higher than corrosion of copper.",

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AU - Tidblad, J.

AU - Hicks, K.

AU - Kuylenstierna, J.

AU - Pradhan, B. B.

AU - Dangol, P.

AU - Mylvakanam, I.

AU - Feresu, S. B.

AU - Lungu, C.

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N2 - Carbon steel, zinc and limestone samples were exposed in Kathmandu for one year. Their corrosion was measured at ten locations and related to SO2, NO2, O3, HNO3 and PM concentrations and climatic factors. Corrosion rates vary considerably and are correlated mainly with the SO2 concentration. Estimated policy targets for SO2 are most stringent for limestone, in the range 3 to 6 μg m-3. The Kathmandu carbon steel and limestone samples matched a general pattern from exposures at more than twenty sites in Asia and Africa. At these Asian/African sites corrosion of copper is generally higher than corrosion of zinc. This is in contrast to experiences from European conditions where corrosion of zinc is higher than corrosion of copper.

AB - Carbon steel, zinc and limestone samples were exposed in Kathmandu for one year. Their corrosion was measured at ten locations and related to SO2, NO2, O3, HNO3 and PM concentrations and climatic factors. Corrosion rates vary considerably and are correlated mainly with the SO2 concentration. Estimated policy targets for SO2 are most stringent for limestone, in the range 3 to 6 μg m-3. The Kathmandu carbon steel and limestone samples matched a general pattern from exposures at more than twenty sites in Asia and Africa. At these Asian/African sites corrosion of copper is generally higher than corrosion of zinc. This is in contrast to experiences from European conditions where corrosion of zinc is higher than corrosion of copper.

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Atmospheric corrosion effects of air pollution on materials and cultural property in Kathmandu, Nepal

Abstract

Keywords

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