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Collection efficiencies of high flow rate personal respirable samplers when measuring Arizona road dust and analysis of quartz by X-ray diffraction.

Authors
Stacey-P; Lee-T; Thorpe-A; Roberts-P; Frost-G; Harper-M
Source
Ann Occup Hyg 2014 May; 58(4):512-523
NIOSHTIC No.
20044061
Abstract
Prolonged exposure to respirable crystalline silica (RCS) causes silicosis and is also considered a cause of cancer. To meet emerging needs for precise measurements of RCS, from shorter sampling periods (<4 h) and lower air concentrations, collaborative work was done to assess the differences between personal respirable samplers at higher flow rates. The performance of FSP10, GK2.69, and CIP 10 R samplers were compared with that of the Safety In Mines Personal Dust Sampler (SIMPEDS) sampler as a reference, which is commonly used in the UK for the measurement of RCS. In addition, the performance of the FSP10 and GK 2.69 samplers were compared; at the nominal flow rates recommended by the manufacturers of 10 and 4.2 l min-1 and with flow rates proposed by the National Institute for Occupational Safety and Health of 11.2 and 4.4 l min-1. Samplers were exposed to aerosols of ultrafine and medium grades of Arizona road dust (ARD) generated in a calm air chamber. All analyses for RCS in this study were performed at the Health and Safety Laboratory. The difference in flow rates for the GK2.69 is small and does not result in a substantial difference in collection efficiency for the dusts tested, while the performance of the FSP10 at 11.2 l min-1 was more comparable with samples from the SIMPEDS. Conversely, the GK2.69 collected proportionately more crystalline silica in the respirable dust than other samplers, which then produced RCS results most comparable with the SIMPEDS. The CIP 10 R collected less ultrafine ARD than other samplers, as might be expected based on earlier performance evaluations. The higher flow rate for the FSP10 should be an added advantage for task-specific sampling or when measuring air concentrations less than current occupational exposure limits.
Keywords
Silicates; Quartz-dust; Dusts; Dust-particles; Hazards; Sampling; Samplers; Analytical-processes; Author Keywords: Arizona road dust; CIP 10 R; FSP10; GK2.69; quartz; respirable; sampler; silica; SIMPEDS; x-ray diffraction; XRD
Contact
Peter Stacey, Analytical Sciences Unit, Health and Safety Laboratory, Harpur Hill, Buxton SK17 9JN, UK
CODEN
AOHYA3
CAS No.
14808-60-7; 7631-86-9
Publication Date
20140501
Document Type
Journal Article
Email Address
peter.stacey@hsl.gsi.gov.uk
Fiscal Year
2014
NTIS Accession No.
NTIS Price
Identifying No.
M042014
Issue of Publication
4
ISSN
0003-4878
NIOSH Division
HELD
Priority Area
Construction; Mining
Source Name
Annals of Occupational Hygiene
State
WV
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