北京交通警察职业卫生学调查

Occupational hygiene survey on Beijing traffic policemen

对５５０名交通警察职业卫生学调查表明，交通警察的工作日内净工作时间大于一般工业各工种平均工时的７４％；交通警察工作环境中有害因素平均浓度（强度）超过国家大气质量标准的１～６倍，接触噪声强度为７５ｄＢ（Ａ），体内血铅（９７．７μｇ／Ｌ）及碳氧血红蛋白（６．８％）含量高于正常人群，其听力损伤主要是语频听损。

Occupational hygiene survey on 550 traffic policemen showed that the working-time of traffic policemen is 74% longer than that of general industry workers. The concentrations(or intensities) of harmful factors of policemen in the working environment are 1～6times higher than the national air quality standards. The noise level is 75dB(A). The levels of blood lead and carboxyhemoglobin are higher than that of general normol people. The main loss is poor audio-frequency in nearing.