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72
Smoke
Average readings from apparatus sited at Monck Street, and Churchill
Gardens.
By means of this apparatus a measured volume of air is drawn through
a filter paper which removes solid matter from it. The stain thereby
produced is compared with a standard, from which the amount of pollution
is calculated.
Micrograms per cubic
metre
Monck
Street
Churchill
Gardens
January 151.2 161.5
February 102.6 117.6
March 141.7 162.5
April 66.0 82.7
May 48.0 58.0
June 38.2 37.6
July 28.0 32.7
August 26.4 30.0
September 34.1 58.0
October 93.9 69.5
November 50.0 42.8
December 58.0 71.0
Sequential Smoke Sampling Apparatus
The City Council is co-operating in an investigation which is being
carried out by the Department of Scientific and Industrial Research into
the relation between atmospheric pollution and respiratory diseases.
During 1962, in order to provide the information required, it was
necessary for the Council to purchase and install, at a cost of approximately
£55, a sequential smoke sampling apparatus which examines and records
a measured quantity of air at regular intervals.
Whilst this machine was purchased particularly for use during the
winter of 1962, it will be of benefit subsequently in providing additional
data for the City Council's regular survey of atmospheric conditions,
particularly during periods of fog.