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目的:探讨电焊作业对工人血液中必需元素的影响。方法:以某金属结构厂82名电焊作业工人为接触组,另以不接触毒物的61名非电焊工人为对照组,血锰含量测定采用石墨炉原子吸收法,血中铜、铁、锌、镁、钙含量则采用火焰原子吸收法测定。同时对电焊作业环境空气中的锰浓度、对照组作业场所空气中锰浓度进行采样测定。结果:血锰,接触组为42173±21163μg/L,明显高于对照组(29197±17162μg/L,P<0101);血锌,接触组和对照组分别为9102±3147mg/L和12172±3189mg/L,两者差异有显著性(P<0105);血镁,接触组和对照组分别为47199±9186mg/L和35182±15108mg/L,两者差异有显著性(P<0105);两组间血铜、血铁和血钙含量差异均无显著性(P>0105)。结论:电焊作业可能导致工人血锰含量增加,同时还可引起血锌含量下降,血镁含量升高。
Objective: To explore the impact of welding operations on the essential elements in the blood of workers. Methods: Totally 82 welding workers in a metal structure factory were used as the contact group, and 61 non-welding workers without contact with poison were used as the control group. Blood manganese levels were determined by graphite furnace atomic absorption spectrometry, copper, iron, zinc, Magnesium, calcium content was determined by flame atomic absorption spectrometry. At the same time, the concentration of manganese in the ambient air of the welding operation and the concentration of manganese in the air of the control group were measured. Results: Compared with the control group, the blood manganese level was 42173 ± 21163μg / L in the blood manganese group (29197 ± 17162μg / L, P <0101), and 9102 ± 3147mg / L in the blood zinc group and 12172 ± 3189mg in the control group / L, there was significant difference between the two groups (P <0105); the levels of serum magnesium, contact group and control group were 47199 ± 9186mg / L and 35182 ± 15108mg / L, Blood copper, blood iron and blood calcium levels were no significant difference (P> 0105). Conclusion: The welding operation may lead to the increase of blood manganese content in workers, meanwhile it may also lead to the decrease of blood zinc content and blood magnesium content.