Occupational exposure to carbon black in its manufacture: data from 1987 to 1992.

Carbon black is a very pure form of very finely divided particulate carbon used mainly in the automotive tyre industry. Its carbonaceous nature and submicron size (unpelleted) have raised concerns with regard to its ability to affect respiratory morbidity. This paper describes the exposure to carbon black dust in the first and second phase of a large multi-national epidemiological study investigating the magnitude of these exposure-related effects. In Phase I, 1278 respirable dust samples were taken (SIMPEDS cyclone) which increased to 2941 in Phase II with a similar rise in the number of total inhalable dust samples (IOM head) from 1288 in Phase I to 3433 Phase II. Exposure dropped markedly between the two phases with total inhalable dust showing a bigger reduction (49.9%) than respirable dust (42%), although the mean exposure for certain factories and job categories dropped more than others. The data are presented by the 14 job titles/numbers (21-34). The highest mean exposure in both phases and for both dust fractions is experienced by the warehouse packers and they are also most likely to exceed the OES of 3.5 mg m-3 (35.1% of samples in Phase I and 12.0% in Phase II).

[1]  R. Sokhi,et al.  PIXE analysis of carbon black for elemental impurities , 1990 .

[2]  K. A. Busch,et al.  Occupational exposure sampling strategy manual , 1977 .

[3]  K Gardiner,et al.  Occupational exposure to carbon black in its manufacture. , 1992, The Annals of occupational hygiene.

[4]  P. Hewett,et al.  Exact expressions for the bias and variance of estimators of the mean of a lognormal distribution. , 1992, American Industrial Hygiene Association journal.

[5]  J. Harrington,et al.  The suitability of the urinary metabolite 1-hydroxypyrene as an index of poly nuclear aromatic hydrocarbon bioavailability from workers exposed to carbon black. , 1992, The Annals of occupational hygiene.

[6]  James H. Torrie,et al.  Principles and procedures of statistics: a biometrical approach (2nd ed) , 1980 .

[7]  B. Maguire,et al.  A Gravimetric Dust Sampling Instrument (Simpeds): Preliminary Results , 1968 .

[8]  T. Ogden.  The ISO and Acgih Standardized Size Fractions and their Relation to Human Deposition Data , 1988 .

[9]  S. Rappaport,et al.  Assessment of long-term exposures to toxic substances in air. , 1991, The Annals of occupational hygiene.

[10]  D. Musch,et al.  Occupational exposure to carbon black: a particulate sampling study. , 1982, American Industrial Hygiene Association journal.

[11]  C. Rossiter,et al.  Respiratory health effects of carbon black: a survey of European carbon black workers. , 1993, British journal of industrial medicine.

[12]  Y. Hammad,et al.  Log‐normality of environmental sampling data , 1977 .

[13]  M van Tongeren,et al.  An Assessment Of The Weight-Loss In Transit Of Filters Loaded With Carbon-Black , 1994 .

[14]  K Gardiner,et al.  Occupational exposure to carbon monoxide and sulphur dioxide during the manufacture of carbon black. , 1992, The Annals of occupational hygiene.

[15]  D Mark.  The use of dust-collecting cassettes in dust samplers. , 1990, The Annals of occupational hygiene.

[16]  J H Vincent,et al.  A new personal sampler for airborne total dust in workplaces. , 1986, The Annals of occupational hygiene.