| Sulfuric acid at workplaces-applicability of the new Indicative Occupational Exposure Limit Value (IOELV) to thoracic particles. | |
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MedLine Citation:
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PMID: 22267186 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Until 2009, the limit values for airborne sulfuric acid in Europe were based on the inhalable particle fraction (e.g. MAK (Maximum allowed concentration at workplace) value 0.1 mg m(-3) as the inhalable fraction). With the publication of the Commission Directive 2009/161/EU, an Indicative Occupational Exposure Limit Value (IOELV) of 0.05 mg m(-3) for sulfuric acid aerosols was based for the first time on the thoracic particle fraction. To permit a comparison of the measured values for the inhalable fraction with those of the thoracic fraction and to quantify the thoracic fraction, a cyclone was fabricated out of sulfuric-acid-resistant stainless steel that achieves suitable collection characteristics (PM(10)) at a flow rate of 5.34 L min(-1). 49 measurements were carried out in parallel in 21 companies. At concentrations well below the IOELV, there is little difference between the thoracic and inhalable particle concentrations. At higher concentrations (>0.1 mg m(-3) inhalable aerosol), larger droplets have a marked effect on the measured values and the thoracic fraction accounts for only 32.1 ± 12.5% of the inhalable fraction. The EU's IOELV and the proposal of the MAK Commission therefore provide a comparable level of protection. In the transposition of the IOELV into national law, an air limit of 0.1 mg m(-3) could therefore be implemented for the inhalable fraction. |
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Authors:
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Dietmar Breuer; Petra Heckmann; Krista Gusbeth; Gregoria Schwab; Morten Blaskowitz; Andreas Moritz |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-1-23 |
Journal Detail:
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Title: Journal of environmental monitoring : JEM Volume: - ISSN: 1464-0333 ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-1-23 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100968688 Medline TA: J Environ Monit Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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IFA, Institute for Occupational Safety and Health of the German Social Accident Insurances, Alte Heerstrasse 111, Sankt Augustin, 53757, Germany. dietmar.breuer@dguv.de. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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