电热原子化技术中石墨表面的改进聚乙烯涂層方法的研究

Modification of Graphite Surface in the Electrothermal Atomization Technique——Investigation of Method for Coating Polyethylenefilm

本文研究了石墨表面的改进方法。实验结果表明,用聚乙烯的苯溶液对石墨探针或石墨管进行涂层处理,可以防止试液沿石墨表面的扩散与向石墨微孔中的渗透,从而使探针法或管壁法的分析结果得到改善。

Modification method of graphite surface was investigated. Experimental results show that coating a film with polyethylene—benzene solution on the working surface of graphite probe or tube,may avoid diffusoin of the sample solution along the surface and decresase permeation in the graphite micro-holes to a great extent. The analytical characteristics of probe or tube can be thus improved markedly.