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Science 18 December 1981:
Vol. 214. no. 4527, pp. 1344 - 1346
DOI: 10.1126/science.214.4527.1344
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Articles

Airborne Lead and Other Elements Derived from Local Fires in the Himalayas

CLIFF I. DAVIDSON 1, THOMAS C. GRIMM 1, and MARGARET A. NASTA 1

1 Departments of Civil Engineering and Engineering and Public Policy, Carnegie-Mellon University, Pittsburgh, Pennsylvania 15213

The combustion of wood and yak dung for heating and cooking in a populated Nepal Himalayan valley contributes significantly to the ambient airborne concentrations of lead, copper, aluminum, magnesium, and elemental and organic carbon. A comparison of the concentrations of these elements in fresh snow with corresponding values in air suggests that the pollution aerosol is confined to the valley, with pristine air aloft.

Submitted on April 6, 1981
Revised on June 9, 1981

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Science. ISSN 0036-8075 (print), 1095-9203 (online)