Study on the natural contamination chemical composition of line insulator in Guangzhou area

In order to study the natural contamination chemical composition of line insulator in Guangzhou area, natural contamination measurement sites were established, natural contamination was collected, and its chemical composition was measured. According to analyzing the content of natural contamination chemical composition, the heterogeneity of chemical composition between upper surface and under surface, and the source of chemical composition, it discovered that the varying law and the source of some kinds of natural contamination chemical composition. Finally, it finds out that heavy metal pollution in Guangzhou area is serious. It has important relationship with the pollution of local heavy industry. SO₄^2-, Na⁺, Mg²⁺, Fe₂O₃, Pb, CaSO₄ have at least 2 sources. Some pollution chemical compositions of different sources are discovered.