Parallel personal measurements of diesel engine exhaust and crystalline silica using dual sampling port  

作　　者：Alan Fleck Caroline Couture Virginie Cabelguen Patrick Eddy Ryan Ross Thuot Guillaume Lachapelle Hugo Coulombe Maximilien Debia 

机构地区：[1]Department of Environmental and Occupational Health,University of Montreal,Montreal H3T 1A8,Canada [2]Health and Safety,Agnico Eagle Mines,Toronto M5C 2Y7,Canada [3]Health and Safety,Westwood Mine(IAMGOLD),Preissac J0Y 2E0,Canada

出　　处：《International Journal of Mining Science and Technology》2020年第3期313-319,共7页矿业科学技术学报（英文版）

基　　金：financially supported by the Fonds de recherche du Québec-Nature et Technologies (No. RQT00043)

摘　　要：Diesel engine exhaust(DEE) and crystalline silica exposures occur simultaneously in the mining industry,and occupational sampling campaigns can be time-and cost-consuming. The authors evaluated a dualport system for simultaneous sampling of DEE and crystalline silica in laboratory and field conditions.Laboratory tests evaluated the operation of pumps during 8 h sampling and the intensity of the flow variation for various filter loading conditions and for different modes of operation. Field validation was performed in an underground mine. Pumps operated in constant flow or constant pressure modes.Tests in constant flow mode showed that when the flowrate increased on one side of the system, it decreased on the opposite side according to the loading intensity. Tests in constant pressure mode showed that flowrates systematically decreased when using loaded cassettes. However, the higher the backpressure setting, the lower the flow variation was. Flow variations during field tests were generally within the acceptable ±5% range. However, significant flow variations were identified in higher concentrations. A significant negative correlation was found between flowrate variation and total carbon concentration. While the majority of tests support the use of the dual-port for evaluating concomitant exposures, results highlight the possibility of filter overloading as a cause of flowrate changes.

关 键 词：Crystalline silica Diesel engine exhaust DUAL-PORT MINING Monitoring 

分 类 号：R134[医药卫生—劳动卫生]