Evaluation of the exposure prediction component of Control of Substances Hazardous to Health Essentials

被引:1
|
作者
Kimbrough, Leshan J. [1 ]
Oestenstad, R. Kent [2 ]
Beasley, T. Mark [3 ]
机构
[1] Univ North Alabama, Dept Chem & Ind Hyg, Florence, AL 35632 USA
[2] Univ Alabama Birmingham, Dept Environm Hlth Sci, Birmingham, AL USA
[3] Univ Alabama Birmingham, Dept Biostat, Birmingham, AL 35294 USA
关键词
Control banding; COSHH Essentials model; external validation; qualitative risk assessment; COSHH ESSENTIALS; CONTROL LIMITS; UK SCHEME; CHEMICALS; RISKS; MODEL;
D O I
10.1080/15459624.2020.1717501
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The exposure prediction component of the Control of Substances Hazardous to Health (COSHH) Essentials model (paper version) was evaluated using field measurements from National Institute of Occupational Safety and Health (NIOSH) Health Hazard Evaluation (HHE) reports. Overall 757 measured exposures for 94 similar exposure groups (SEGs) were compared with the COSHH Essentials predicted exposure range (PER). The SEGs were stratified based on the magnitude of measured exposures (high, medium, or low) and physical state of the substance (vapor or particulate). The majority of measured exposures observed involved low-level exposure to vapors; thus, overall findings from the current study are limited to low-level vapor exposure scenarios. Overall, the exposure prediction component of COSHH Essentials vastly overestimated low-level exposures to vapors. This study went beyond the scope of previous studies and investigated which model components led to the overestimation. It was concluded that COSHH Essential's tendency to overestimate was due to multiple complex interactions among model components. Overall, the magnitude of overestimation seems to increase exponentially as values for predictor variables increase. This is likely due to the log-based scale used by the model to allocate concentration ranges. In addition, the current banding scheme used to allocate volatility appears to play a role in the overestimation of low-level exposures to vapors.
引用
收藏
页码:97 / 108
页数:12
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