In order to increase the degradation efficiency of chlorpyrifos pesticides in soil, a organ phosphorous degrading condition was optimized for a compound microbial agent which composed of a high-performance microbial and unninghamella. Orthogonal design table was used to select soil moisture, pH, chlorpyrifos concentration and compound microbial agents inoculation amount as reference factors in potted plants. The results of the orthogonal design analysis indicated that optimal chlorpyrifos degradation condition for this compound agent was soil moisture 40%, pH 7.3, chlorpyrifos concentration and microbial agent inoculation amount 100 µg"mg-1 and 200ml"kg-1.Temperture target analysis demonstrated that this compound agent had a broader temperature tolerance, it could carry out the degradation of chlorpyrifos at temperature 20-35°C, which 30°C was the most suitable temperature for the agents. Analysis of extreme differences indicated that soil pH had the maximum influence on the chlorpyrifos in the soil. Other factors affecting the chlorpyrifos degeneration followed as soil moist > inoculation amount > chlorpyrifos concentration.
[1]
Z. Cardeal,et al.
Analysis of Organophosphorus Pesticides in Whole Milk by Solid Phase Microextraction Gas Chromatography Method
,
2006,
Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes.
[2]
A. Ariño,et al.
Pesticide residues in field‐sprayed and processed fruits and vegetables
,
2004
.
[3]
Fangyuan Hua,et al.
Degradation of chlorpyrifos in laboratory soil and its impact on soil microbial functional diversity.
,
2009,
Journal of environmental sciences.
[4]
Simona Collina,et al.
Microwave-assisted extraction of coumarin and related compounds from Melilotus officinalis (L.) Pallas as an alternative to Soxhlet and ultrasound-assisted extraction.
,
2006,
Journal of chromatography. A.