W. H. O.
2.A side extraction PIG ion source with permanent magnet for extracting negative ions,such as H-,O-,F-,etc. is introduced. At 15kV extraction voltage,O-beam of 130 μ A and F- beam of 75 μ A are obtained,and the discharge power consumption is 110 and 280W respectively.
6.Methanol was selected as a model reactant to carry out laser stimulated surface reaction(LSSR), where heteropoly compounds H 3PMo 12 O 40 · x H 2O? H 3PW 12 O 40 · x H 2O and H 6PMo 6W 6O 40 · x H 2O were used as solid surface materials and a TEA CO 2 laser generator was used as light source. Basing on IR and TPD tests, the vibration modes were discussed.
7.Photodegradation of dichlorvos(DDVP)was investigated by irradiating with a 9W mercury lamp and using H 2O 2、K 2S 2O 8 as oxidents.
9.By fitting different objective functions with nonlinear Marquart computer program to the data obtained under the experimental conditions, the optimal reaction rate expression for COS hydrolysis was gained as follows r(COS)=-dXd(W/f(COS))=1.82·10 14 p(COS) p -0.5(H 2O)exp- 75? 8008.374T. The model was tested by mathematical statistic method and residual distribution.

