摘要
为验证GJB2-82常规兵器发射或爆炸时压力被对人体作用的安全标准的安全性或适用范围,将六组豚鼠分别暴露于不同发数和声强的冲锋枪射击条件下,但经受的噪声水平均在安全标准值附近(-2~1dB)。以豚鼠皮层听区诱发电位阈和光镜下耳蜗毛细胞损伤率为指标,观察其损伤程度与规律。结果表明,暴露后48h,各组动物平均听阈阈移3~22dB,总平均听阈阈移16.9dB。阈移≥15dB耳数发生率各组为10%~100%,总体发生率为54.6%。耳蜗毛细胞损伤率各组为3.56%~29.27%,总体损伤率为14.63%。以上结果表明,除个别组外,各组动物听觉有明显损伤。故可认为GJB2-82标准不够安全或不适合冲锋枪类轻武器的射击条件。
In order to testify the safety and application scope of GJB2-82 'Safety Standard for Effects ofPressure Waves from Firing or Explosion by Conventional Weapons on Human Bodies', six groupsof guinea pigs were exposed to firing noise of submachine gun with varied number of shooting andsound intensity,while the noise dosages were all close to the safety standard value (-2-1 dB).Guinea pigs threshold of ACEP and damage rate of cochlear hair cells with light microscope wereused as test indexes. Injury and regularity were observed. The results showed that the averagelevel of hearing threshold of each animal group increased 3- 22 dB f the general hearing thresholdof all groups shifted 16. 9 dB. The incidence of ear number with threshold shift ≥15 dB occupied10%-- 100% in each group, the total incidence was 55. 7K. Injury rate of cochlear hair cells was3. 6% -- 29. 3% in each group and total injury 14. 6K. All above has shown that with the exceptionof one group, the hearing damage of the rest animal groups was obvious, so it may be concludedthat GJB2-82 is not safe enough or does not applicable for small arms like submachine gun.
出处
《工业卫生与职业病》
CAS
CSCD
1997年第2期65-68,共4页
Industrial Health and Occupational Diseases