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High-frequency Hearing Loss of Noise Exposed Workers in Artificial Gem Plant
Author(s): 
Pages: 115-116
Year: Issue:  3
Journal: OCCUPATIONAL HEALTH AND EMERGENCY RESCUE

Keyword:  人造宝石噪声高频听力损失;
Abstract: 目的 了解人造宝石加工行业噪声作业工人高频听力损失状况,为采取有效的防护、整改措施及作业人员的健康监护提供依据.方法 对某宝石厂磨钻、园磨及熔炉车间作业环境进行卫生学调查,测量车间环境噪声水平.选890例接触噪声人员作噪声组,并选160例非接触噪声人员作对照组.用常规方法 测量每个工人的左右耳气导听阈,按GBZ49-2002标准对听阈作年龄和性别修正,并诊断是否为高频听力损失,比较两组工人听力状况.结果 作业现场共测86个噪声点,其中有82个点超过国家卫生标准,超标率为95.35%;噪声强度为70.1~98.6dB(A),平均(89.2±2.8)dB(A);噪声组人员高频听力损失罹患率为34.3%,明显高于对照组(12.5%)(P<0.01),且噪声组随接噪工龄增长有增高趋势,工龄5年以上的高频听力损失明显增高.结论 提示人造宝石加工行业高强度噪声引起作业人员高频听力损失.
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