职业性锰接触与尿锰、发锰关系的探讨

Study on the Relationship Between Occupational Manganese Exposure and Manganese Levelsin Urine and Hair

对锰矿及其加工厂接触锰工人５３６人、同厂矿其他工种工人５２人和行政对照组５３人进行体检及发锰、尿锰测定，同时进行环境检测。作业环境空气中ＭｎＯ２平均浓度波动范围０．１～１．８５ｍｇ／ｍ３；粉尘平均浓度在０．２２～８．０７ｍｇ／ｍ３。尿锰及发锰均值接触组、其他工种、对照组分别为０．２７９４μｍｏｌ／Ｌ及０．３２７６μｍｏｌ／ｇ，０．１６４９μｍｏｌ／Ｌ及０．２５１９μｍｏｌ／ｇ，０．１１８７μｍｏｌ／Ｌ及０．０７６６μｍｏｌ／ｇ。尿锰、发锰与空气锰及粉尘浓度间、与症状体征间未发现相关关系，认为尿锰、发锰目前只能作为锰接触指标，还不能作为锰接触工人的生物监测指标或早期锰中毒的诊断指标。

he levels of manganese vapour and manganesedust in air in a manganese mine and its attached manganese processing factory were investigated, 536 manganese workers as control,52 workers and 53 administrator without manganese exposure were examined inthe study, The results showed that the MnO2 averagelevels in the air ranged from 0.1mg/m3 to 1.85mg/m3 and manganese dust levels ranged from 0.22mg/m3 to8.07mg/m3.The manganese levels in urine and hair toexposed group, unexposed group and administratorgroup were 0.2794μmol/L,0.3276μmol/g;0.1649μmol/L, 0.2519μmol/g and 0.1187μmol/L, 0.0766μmol/g re─spectively.It was found that workers′ manganese levelsin urine and hair were not correlative to the concentra─tions of MnO2 and manganese dust in the working envi─ronments.It was suggested that the manganese levels inurine and hair could only be used as the indicator ofmanganese exposure, but not be the indicator for biolog─ical mornitorring or the early indicator of manganesepoisoning.