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采用自身对照试验,利用个体噪声剂量系统检测海洋石油钻井平台作业人员在作业期间生产性噪声个体暴露水平(40 h等效声级),采用酶联免疫吸附试验(ELISA)分别检测噪声暴露作业前后血清皮质醇水平,并分析血清皮质醇水平变化与噪声暴露水平和暴露时间的关系。结果表明:噪声暴露作业后,全部作业人员血清皮质醇水平明显升高(p<0.05,α=0.05);不同噪声暴露水平作业人员血清皮质醇水平差别没有统计学意义(p>0.05);噪声暴露>20 d的作业人员血清皮质醇水平明显高于噪声暴露≤20 d者(p<0.05)。血清皮质醇水平变化与噪声暴露水平没有显著关联性,而与噪声暴露时间呈明显的正相关(p<0.05)。研究表明,生产性噪声慢性暴露使血清皮质醇水平升高,且暴露时间是主要影响因素。
Using self-control test, individual noise dose system was used to detect individual noise level (40-h equivalent sound level) of offshore oil drilling rigs during operation. Enzyme-linked immunosorbent assay (ELISA) Serum cortisol levels, and analyze the relationship between serum cortisol levels and noise exposure levels and exposure time. The results showed that serum cortisol levels of all workers were significantly increased after noise exposure (p <0.05, α = 0.05). There was no significant difference in serum cortisol levels among workers with different noise exposure levels (p> 0.05) Serum cortisol levels of workers exposed to> 20 d were significantly higher than those of noise exposure ≤20 d (p <0.05). There was no significant correlation between serum cortisol level and noise exposure level, but significant positive correlation with noise exposure time (p <0.05). Studies have shown that chronic exposure to productive noise raises serum cortisol levels and exposure time is a major contributor.