The biodegradation of organochlorinated pesticides(OCPs) by P chrysosporium was carried out under the optimum culture conditions( φ 0 02% glucose
0 03% ammonium tartrate
pH 3 5 ̄4 0
35 ℃) and up to 90% of OCPs was removed The analytical results for the degraded chemicals showed that a great amount of organochlorine compounds had been converted to CO 2 and H 2O Some transitional products such as 1
3
5 trimethoxy
2
4 dichlorobenzophene and benzeneacetic acid etc were detected It indicates that the dechlorination and cleavage of benzenering are the main degradation processes of OCPs.