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对某厂三氯乙烯(TCE)作业环境进行了调查,发现糟旁作业区添新料后空气中TCE浓度超过标准近10倍,平时槽旁浓度稍高,其余各测定点均在标准范围内。对51名TCE作业工人的健康检查,除乏力、睡眠障碍、记忆力减退等症状较对照组多见外,其它脏器均未见异常,尿中三氯乙酸(TCA)为2.2～5.4毫克/克肌酐,低于WHO建议的职业性接触限值。但该厂曾有2名工人在清槽时发生急性中毒。这表明正常生产条件下TCE危害性不大,但清槽时应加强安全、预防措施。
The TCE operating environment of a factory was investigated. It was found that the concentration of TCE in the air next to the new working area was nearly 10 times higher than that of the standard, and the concentration near the trough was slightly higher. The rest of the measuring points were within the standard range . The physical examination of 51 TCE workers showed no abnormalities except for fatigue, sleep disturbance and memory loss compared with the control group. The TCA in urine was 2.2-5.4 mg / g Creatinine, lower than the occupational exposure limit recommended by the WHO. However, two workers at the factory had acute poisoning during clearing. This indicates that TCE is not harmful under normal production conditions, but safety and precautionary measures should be strengthened when clearing the tank.