摘要
以TiO2 /beads作为光催化剂 ,研究了磷酸酯类农药光催化降解的规律 .结果表明 ,低浓度的磷酸酯类农药光催化降解符合一级动力学方程 ;4 .0× 1 0 - 4mol/L的敌敌畏和久效磷农药 ,3 75W中压汞灯照射 1 .5h ,其残留量小于1 0 % ,光照 3 .5h ,有机磷被完全光催化降解至PO3- 4.
The photocatalytic degradation of phosphate ester pesticides using TiO 2/beads as a photocatalyst was studied. The results showed that the photocatalytic degradation reaction of the phosphate ester pesticides followed the first order kinetics, with 4 0×10 -4 ?mol/L of dichlorvos and monocrotophos, the residual amount was lower than 10% after 1.5?h irradiation with a 375 W medium pressure mercury lamp, and the organophosphorous can be completely photocatalytically degraded into PO 3- 4 after 3.5 h irradiation.
出处
《感光科学与光化学》
CSCD
2000年第1期7-11,共5页
Photographic Science and Photochemistry
基金
安徽省自然科学基金
