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- W2369483059 abstract "Objective To explore hearing loss in workers exposed to low and middle frequency noise in the medium and small scale chemical companies,and provide protective measures in the low and middle frequency noises.Methods The workplaces of occupational noise intensity and spectrum were measured for 12 small and medium scale chemical companies;212 workers exposed to noise and 179 workers in the control group were checked for pure tone audiometry,then characteristics of workers' hearing loss would be analyzed combining with on-site noise monitoring results.Results The results showed that the main frequency of noise was steady-state,noise intensities were between 72.4 dB(A) and 96.2 dB(A) in the investigated workplaces.Detection rates of hearing loss in word-frequency and high-frequency were 42.9% and 20.8% in the observation group,which were higher than those in the control group(high-frequency(χ2=121.61,P0.01),word frequency(χ2=52.64,P0.01)),the average value of hearing loss in the observation group was higher than that in the cotrol group(F=9.6,P0.01).Conclusion Low and middle frequency noises can harm workers' hearing,so protective measures should be formulated as soon as possible." @default.
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- W2369483059 date "2010-01-01" @default.
- W2369483059 modified "2023-09-26" @default.
- W2369483059 title "Hearing Loss in Workers Exposed to Low and Middle Frequency Noises in Small and Medium Chemical Enterprises" @default.
- W2369483059 hasPublicationYear "2010" @default.
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