February 25, 2017

Lead Pollution From Motor Vehicles 1974-1986: A select by P. Farmer

By P. Farmer

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Sci. 1983, 26(2), pp. 219–228. The concentrations of eight metals were measured in street dust obtained from an intersection involving Riccarton Road, Christchurch, New Zealand. They were comparable with levels found in other cities, except that the concentration of Pb was greater than in many other cities. The concentrations of the metals were influenced by traffic density and weather conditions, in particular rain and drought. Over 8 years Pb levels had risen significantly as a consequence of an alteration in traffic control at the intersection, and latterly during a year-long drought.

323– 335. ) The Commission of the European Communities recommendation of 29 March 1977, concerning the biological surveillance of the population against the danger of lead poisoning, lays down that the member states should evaluate the population’s exposure to the lead-poisoning risk when not at its places of work. It defines the reference levels, expressed in leadintoxication percentages; if these are exceeded the member states should determine the source of the exposure and take appropriate measures to eliminate this danger.

The integration of fluxes over a year indicated that metal removal in road drainage water exceeds that deposited on the roadside verges, most markedly in the case of copper. From estimates of the source strength for lead, it is concluded that ~90% of emissions are dispersed by the atmosphere away from the immediate vicinity of the road. These findings are supported by 22 LEAD POLLUTION FROM MOTOR VEHICLES estimation of integrated deposition since the opening of the road, derived from analysis of roadside soils.

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