A quantitative analysis model for the determination of the oxide concentration in a doublecomponent containing model oil is established based on the infrared spectroscopy data for cyclohexanone and cyclohexanol components in model oil, the regression of prominent component, and the regression of back propagation neural algorithm and support vector machine. The infrared spectroscopy data were compressed by principal component analysis and used as input information to develop models. The three quantitative models can predict the respective oxide contents, with the predictive ability of support vector machine model superior to the other two models, showing a good stability of support vector machine model. Comparing with traditional methods, the established model provides a simple, fast, nodamage, costeffective and green determination method.

An imidazoline corrosion inhibitor was synthesized from diethylenetriamine and oleic acid using dimethylbenzene as a water carrying agent, and the synthetic reaction conditions, molecular structure and corrosion inhibiting capability to boiler water system were studied. Results show that the optimized parameters for the synthesis is as follows: the molar ratio of oleic acid to diethylenetriamine is 1∶1.4, the volume ratio of dimethylbenzene to reacting mixture is 1∶5 , temperature is programmed raised from 145 ℃ to 210 ℃, the reflux time is 8 h. under the optimum conditions, the yield is up to 96.5%, corrosion inhibition efficiencies on carbon steel is over 90% with imidazoline derivative concentration of 20 mg/L in boiler solutions．The imidazoline derivative was found to inhibit anode corrosion reactions greatly, and also to inhibit cathode corrosion to some extent, so it can be classified as a passivating anodic-type corrosion inhibitor. The mechanism of corrosion inhibition relies on the strong absorption of the imizadoline on metal surfaces which can prevent metal surface from contacting with water．