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目前国内对车间空气中稀土的定量分析尚未见报道,本文用比色法和荧光分光光度法分别对车间空气和稀土作业者发中稀土总量和铈(以下均以氧化物计)进行定量分析。结果:各点空气中铈的含量占稀土总量的百分比基本符合该厂生产的稀土盐中铈占稀土总量的比例。作业工人发中稀土含量明显高于对照组,且与空气中稀土浓度具有相关性。目前一般认为测定人发中金属元素的含量可以反映环境污染的程度。人发作为生物样品具有易采集,无损伤,便于运送和保存等优点。现在国内仅有个别单位对车间空气中稀土粉尘浓度进行测量,而对空气中稀土的定量分析还未见报道,又鉴于有的国家已提出了车间空气中二氧化铈容许浓度的建议值。因此,我们进行稀土劳动卫生学调查时,选用比色法和荧光分光光度法分别对车间空气和稀土作业者头发中的稀土总量和铈进行了定量分析,以期了解车间空气中稀土浓度及寻找稀土职业接触、吸收程度和职业中毒的客观指标。
At present, the quantitative analysis of rare earth in the air of the workshop has not been reported yet. In this paper, the amount of rare earths and cerium (all calculated as oxides) in workshop air and rare earth workers were quantified by colorimetry and fluorescence spectrophotometry . Results: The percentage of cerium in the air to the total rare earth was basically in line with the ratio of cerium to rare earth in the rare earth salt produced by the plant. The content of rare earth in worker hair was significantly higher than that in control group, and was correlated with the concentration of rare earth in air. It is generally believed that the determination of metal content in human hair can reflect the degree of environmental pollution. Human epilepsy has the advantages of easy collection, no damage, easy to transport and save for biological samples. Now only a few units of domestic workshop on the concentration of rare earth dust in the air to measure the quantitative analysis of rare earths in the air has not been reported, but also given some countries have put forward the recommended value of the workplace air ceria concentration. Therefore, we carried out Rare Earth Labor Hygiene Survey, the selection of colorimetry and fluorescence spectrophotometry respectively, the workshop of air and rare earth workers in the hair of the total amount of rare earths and cerium quantitative analysis in order to understand the concentration of rare earth in the air shop and look for Rare earth occupational exposure, absorption and occupational poisoning objective indicators.