6FISHER M H. Ivermectin and avermectin chemist [ M ]. Berlin: Springer- Verlag,1989:1 -23.
7BREZONIK P L, FULKERSON-BREKKEN J. Nitrate-induced photolysis in natural waters: controls on concentrations of hydroxyl radical photo-intermediates by natural scavenging agents[J]. Environ Sci Technol,1998 ,32 (19) :3004 -3010.
8VAUGHAN P P,BLOUGH N V. Photochemical formation of hydroxyl radical by constituents of natural waters[J]. Environ Sci Technol, 1998,32: 2947 - 2953.
9PUSINO A, BRASCHI L, PETRETTO S, et a. Photodegradation of herbicide triasulfuron[ J]. Pestic Sci,1999,55:479 -481.
10Joan A Lasota, Richard A Dybas. Avermectins, a novel class of com- pounds: implications for use in Arthropod pest control[J]. Annu Rev Entomol, 1991, 36: 91- 117.
