{"title":"Characterization of metalworking fluid aerosols in bearing grinding operations.","authors":"F. Rosenthal, B. L. Yeagy","doi":"10.1080/15298660108984640","DOIUrl":null,"url":null,"abstract":"The concentrations and size distribution of metalworking fluid aerosols were investigated in grinding operations in the bearing manufacturing industry. Fifteen paired open- and closed-face cassette samples and five cascade impactor samples were obtained in each of three types of grinding machinery (face, microcentric, and progressive). Aerosol mass concentration as measured by open-face filter sampling ranged from 0.34 to 2.43 mg/m3. As measured by closed-face sampling the range was 0.14 to 2.01 mg/m3. For each grinding process, open-face concentration was significantly higher than the closed-face concentration (paired t-test, p <0.05). Mass median aerodynamic diameter (MMAD) ranged from 3.33 to 6.26 microm. The percentage of mass greater than 9 microm ranged from 8.0 to 45.3. The MMAD and fraction greater than 9 microm were significantly greater for the aerosol produced by the face grinder compared with the other two processes. The results indicate that (1) closed-face sampling results in a lower aerosol mass concentration, as compared with open-face sampling, with the degree of difference being somewhat dependent on grinding process; and (2) the particle size distribution and concentration of metalworking fluid aerosols may vary with the type of grinding operation sampled.","PeriodicalId":7449,"journal":{"name":"AIHAJ : a journal for the science of occupational and environmental health and safety","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2001-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"6","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"AIHAJ : a journal for the science of occupational and environmental health and safety","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/15298660108984640","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 6
Abstract
The concentrations and size distribution of metalworking fluid aerosols were investigated in grinding operations in the bearing manufacturing industry. Fifteen paired open- and closed-face cassette samples and five cascade impactor samples were obtained in each of three types of grinding machinery (face, microcentric, and progressive). Aerosol mass concentration as measured by open-face filter sampling ranged from 0.34 to 2.43 mg/m3. As measured by closed-face sampling the range was 0.14 to 2.01 mg/m3. For each grinding process, open-face concentration was significantly higher than the closed-face concentration (paired t-test, p <0.05). Mass median aerodynamic diameter (MMAD) ranged from 3.33 to 6.26 microm. The percentage of mass greater than 9 microm ranged from 8.0 to 45.3. The MMAD and fraction greater than 9 microm were significantly greater for the aerosol produced by the face grinder compared with the other two processes. The results indicate that (1) closed-face sampling results in a lower aerosol mass concentration, as compared with open-face sampling, with the degree of difference being somewhat dependent on grinding process; and (2) the particle size distribution and concentration of metalworking fluid aerosols may vary with the type of grinding operation sampled.