Letter | Published:

Atmospheric Hydrogen Sulphide Concentrations during the London Fog of December 1962

Naturevolume 199pages474475 (1963) | Download Citation



VERY few figures have been published concerning the hydrogen sulphide content of the atmosphere. Information on this subject was required in connexion with investigations on the tarnishing of silver, and determinations have been made at the Post Office Research Station, London, N.W.2, at about weekly intervals for the past 2.5 years. The method used was to suck, by means of a small electric pump, a measured volume of pre-filtered air through filter paper impregnated with silver nitrate and to compare the resultant silver sulphide stain with standards. The site is on a hill 240 ft. above sea-level in north-west suburban London. Immediate surroundings are residential and open space with typical suburban mixed residential, light industrial, railway and power station development beyond.

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  1. Post Office Engineering Research Station, Dollis Hill, London, N.W.2

    • J. T. MINSTER


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