A contribution to understanding of oil dispersion at the work with a chain saw by means of the radiotracer method
1990
Skoupy, A. | Sejkora, P. (Vysoka Skola Zemedelska, Brno (CSFR). Lesnicka Fakulta) | Pechlak, B.
A considerable part of oil used for lubrication of power saw chains is dispersed to the environment. To understand its dispersion a method was elaborated based on the use of radiotracers. The lubricating oil was labelled with radiotracers which facilitated its later quantification in the environment. The present paper provides verification of the radiotracers 113mIn and 82Br. The latter was experienced to be more suitable. Experimental measurement evaluating the appropriateness of the proposed method revealed that 64.4 per cent of the oil used for chain lubrication was retained in sawdust, 21.9 per cent of it fell to the soil surface and 8.3 per cent stuck on the cut and its close vicinity. 5.4 per cent of the oil was not caught by the measurement, it got mostly to the air in the form of aerosol. The highest oil concentration on the soil surface was determined up to 1 ml.m-2, the average concentration amounted to 0.074 ml.m-2. The method can be used for quantification of oil dispersed in any place. It can also be used for measuring of aerosol escape, the amount of oil inhaled by the power saw operator, etc.
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