NDLI: Exposure assessment for nitrogen oxides and carbon monoxide in German hard coal mining

Content Provider	Springer Nature Link
Author	Dahmann, Dirk Morfeld, Peter Monz, Christian ll, Birgit Gast, Frank
Copyright Year	2009
Abstract	The exposure situation of German hard coal miners with respect to the components nitrogen monoxide and nitrogen dioxide. Carbon monoxide was measured additionally and the results are displayed but not discussed in detail in this paper. The data were used to estimate personal long-term exposures in an inception cohort.For all three components, time weighted 8-h shift values were determined for typical groups of coalminers according to the European measurement standard. An expert panel from the coalmining company made an effort to estimate major potential changes in the exposure situation.The main sources of nitrogen oxides and carbon monoxide in hard coal mining were the diesel engines. Blasting fumes contributed only to a lesser degree and with different exposure characteristics, e.g. much reduced NO2 levels compared to the mines’ rear areas. As rough 8 h-shift averages describing the current exposure situation, we found 1.35 ppm NO and 0.21 ppm NO2 for the diesel engine drivers. Blasting specialists were more difficult to evaluate but rough 8 h-shift averages of 0.84 ppm NO and 0.014 ppm NO2 could be estimated from our measurement series. By applying these data and the estimates of experts about the retrospective exposure situation to a cohort of 1,369 coalminers, we derived mean (max) cumulative exposures in ppm × number of shifts of 1,748 (5,928) for NO and 19.6 (1,013) for NO2 when summarizing over the follow-up period from 1974 until 1998.Especially for the diesel engine drivers, exposure can be regarded as rather high, in particular, when compared to recommended limits by SCOEL and MAK, though the exposures have been in line with the enforced German occupational exposure limits. Whether this exposure situation has caused adverse health effects will be investigated epidemiologically.
Starting Page	1267
Ending Page	1279
Page Count	13
File Format	PDF
ISSN	03400131
Journal	International Archives of Occupational and Environmental Health
Volume Number	82
Issue Number	10
e-ISSN	14321246
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-04-08
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Exposure assessment Coal mining Nitrogen oxides Carbon monoxide Rehabilitation Occupational Medicine/Industrial Medicine Environmental Health
Content Type	Text
Resource Type	Article
Subject	Public Health, Environmental and Occupational Health

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