目的通过对某石化厂单纯接触噪声及接触噪声同时伴有高温、硫化氢混杂因素工人的听力测试结果进行分析,了解噪声与其他危害因素联合作用对工人听力的影响,为噪声性听力损失的防治工作提供参考。方法根据某石化厂2007年242例接触噪声及相关有害因素的工人听力检查结果,按工作中接触的职业危害因素差异分成3组:单纯噪声组,噪声合并高温组,噪声合并硫化氢组。测定计算每组各工人的语频和高频听力损失值,对各组的听力损失值进行统计分析。结果3组工人均不同程度地出现噪声性听力损伤。三组工人的听力损失程度存在区别(P<0.05),尤其在语言频率的损失上表现明显。噪声合并硫化氢组工人在语言频率的听力损伤程度最严重,噪声合并高温组的工人次之,单纯噪声组工人在语言频率的听力损伤程度最小。结论噪声联合高温或硫化氢作用的听损率和损失程度均较单纯性噪声高,提示噪声联合高温、硫化氢作用于人耳存在联合加强作用。应对噪声作业场所环境温度和硫化氢浓度加以控制,以减少噪声与其他有害因素联合作用对工人听力的影响。 Objective To analyze the hearing test results of workers exposed to noise and contact noise combined with high temperature and hydrogen sulphide in a petrochemical plant to understand the effects of noise and other hazards on workers’ hearing and to prevent and control noise-induced hearing loss Work for reference. Methods According to the results of 242 workers exposed to noise and related harmful factors in a petrochemical plant, the workers were divided into three groups based on the occupational hazards involved in the work: simple noise group, noise combined with high temperature group, noise combined with hydrogen sulfide group. Determination of each group of workers in the audio frequency and high frequency hearing loss value, the value of hearing loss in each group were statistically analyzed. Results All three groups of workers experienced noise-induced hearing impairment to varying degrees. There was a difference between the three groups of workers in hearing loss (P <0.05), especially in the loss of language frequency. Workers in the noise-combined H2S group had the most severe hearing loss at the language frequency, followed by those in the noise-combined high-temperature group, and those with the noise-only group had the lowest hearing loss at the language frequency. Conclusion The hearing loss rate and loss degree of noise combined with high temperature or hydrogen sulfide are both higher than simple noise, suggesting that there is a joint strengthening effect of noise combined with high temperature and hydrogen sulfide on human ear. Noise ambient temperature and hydrogen sulfide concentration should be controlled to reduce the impact of noise and other harmful factors on the hearing of workers.