Mechanism and developing history of chemical dispersants are introduced;advantage and shortcoming of chemical dispersants are analyzed;and some ideas about the use control and the development of chemical dispersants are presented.

albicans from different sources to chemical disinfectants in laboratory.

Objective To know the efficacy of 8 common chemical disinfectants in killing Aspergillus niger.

In order to evaluate scientifically the efficacy of chemical disinfectants in killing gonococcus, plate infiltration inoculation method was used to compare different culture media for evaluating difference of germicidal efficacy.

Study on influencing factors of common chemical disinfectants used to metal;

Susceptibility of larval Japanese flounder (Paralichthys olivaceus) to some chemical disinfectants;

The effect of six chemical disinfectants of different quality concentrations,namely,povidone iodine、dibromohydantoin、formalin、trichloroisocyanuric acid、calcium hypochlorine and sodium hypochlorite,on the species and quantities of plankton in cultured water were studied.

Some of chemical defoamers and the structures of mechanical foam breakers were introduced with the analysis of their advantages and disadvantages,and a new-type mechanical foam breaker with variational diameter was presented.

The use of oilfield chemicals can be found through the overall process of oil and gas exploration and development.

The paper introduces a method to determine sulfur/nitrogen content in oilfield chemicals or oil products by sulfur/nitrogen elemental analyzer.

Using luminescent bacteria as the testing medium, a new biotoxicity testing method for oilfield chemicals and drilling fluids was worked out.