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为研究低浓度铅作业对女工是否有影响 ,调查了铅接触浓度 (时间加权平均浓度 )为0 .0 315 mg/ m3的女工 82名 ,分别测定血游离原卟啉 (FEP)、血铅、尿铅。结果表明 FEP、血铅、尿铅与对照组比较差异有显著性 (P<0 .0 1)。指标间相关性较好呈剂量 -反应关系。血铅和 FEP阳性检出率分别为2 0 .73%和 2 1.95 % ,2项均超过正常上限的检出率 (13.4% )。智商 IQ值为 6 0～ 79、80～ 89、90～ 10 9、110～119者 FEP≥ 0 .90 μmol/ L的阳性检出率分别为 2 7.6 %、2 2 .6 %、15 .0 %和 0 %。在 FEP各个水平段上神经系统总症状发生率均明显高于对照组 ,尤以 FEP值在 0 .36～ 0 .5 4μmol/ L 总症状发生率最高 ,分别为2 0 8.32 %和 5 8.74%。把神经系统各症状按头痛、头昏、记忆力减退和睡眠障碍、心悸、多汗分组比较 ,FEP各水平段上头痛组均明显高于睡眠障碍组
To investigate whether low-level lead exposure affects female workers, 82 female workers exposed to lead exposure (time-weighted average concentration) of 0.015 mg / m3 were surveyed to measure levels of free protoporphyrin (FEP), blood lead, Urine lead. The results showed that there was significant difference between FEP, blood lead, urine lead and control group (P <0.01). Correlation between the indicators was better dose-response relationship. The positive rates of blood lead and FEP were 20.73% and 21.95%, respectively, and the detection rates of the two were above the upper limit of normal (13.4%). The positive detection rate of FEP≥0.90 μmol / L with IQ of 60 ~ 79, 80 ~ 89, 90 ~ 109, 110 ~ 119 were 27.6%, 22.6%, 15.0 % And 0%. The incidence of neurological symptoms was significantly higher than that of the control group at all levels of FEP, especially in the range of 0.36-0.44μmol / L of FEP (20.82% and 57.74%, respectively) . The symptoms of the nervous system by headache, dizziness, memory loss and sleep disorders, palpitations, hyperhidrosis group comparison, FEP headache group at all levels were significantly higher than the sleep disorder group