Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (25): 207-212.doi: 10.11924/j.issn.1000-6850.2014-0818

Special Issue: 植物保护 园艺

• 23 • Previous Articles     Next Articles

Ozone Dissolution Characteristics and Removal Effect of Pesticide Residues in Cantaloupes by Ozone Water

  

  • Received:2014-03-24 Revised:2014-04-11 Online:2014-09-05 Published:2014-09-05

Abstract: In order to investigate the effect of ozone treatment on pesticide degradation, this paper studied the ozone water solubility characteristics and the effect of different concentrations of ozone in water, different treatment times and different pH, different handling ways on cantaloupe which with four kinds of pesticide residues (malathion, chlorpyrifos, cypermethrin and chlorothalonil) degradation. The results showed that: the solubility of ozone decreased with increase of the volume of the absorbing solution and pH value, at pH 4 the solubility was up to 10.15 mg/L. With the increased of ozone concentration and immersion time, the degradation of 4 kinds of pesticide residues at different degree rate increased in cantaloupe. Degradation rate of dynamic ozone water was significantly higher than the static ozone water treatment (P<0.05). Best result was obtained in pH 10 dynamic ozone water treatment for 30 min, malathion, chlorpyrifos, cypermethrin, chlorothalonil degradation rate of four pesticides were 90.87%, 85.62%, 78.31% and 85.26%.