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我们调查了某化肥厂接触CO浓度在91.2mg/m~3以下,工龄为1～35年间的283名职工,未发现急性和亚急性中毒病例。但在此浓度下,工作3～4小时后,血液中HbCO饱和度可达8%左右,约有25%以上的接触者有不同程度的自觉症状。研究表明,心电图、甲皱微血管检查技术可列为CO作业工人的健康监护手段。HbCO饱和度超过5%时,应视为过量接触,超过7%可能对人体产生危害。吸烟可使HbCo饱和度增加。所以,应把禁烟列入CO作业工人的安全作业规程。
We investigated 283 workers in a chemical fertilizer plant exposed to CO concentrations of 91.2 mg / m3 or less for a period of 1 to 35 years and found no acute or subacute poisoning cases. However, at this concentration, 3 to 4 hours after work, the blood HbCO saturation of about 8%, about 25% of the contacts have different degrees of self-consciousness symptoms. Studies have shown that electrocardiogram, nail fold microvascular examination technology can be listed as CO occupational health guardianship means. HbCO saturation of more than 5%, should be considered as excessive contact, more than 7% may be harmful to humans. Smoking can increase HbCo saturation. Therefore, non-smoking should be included in the CO operating workers safe operating procedures.