3 results about "Induction time" patented technology

A method for distinguishing metal ions Fe 2+ and Ni 2+ , the method applies a "urease-CO(NH2)2-H2SO4" pH clock reaction system as a distinguishing solution, according to the different induction time generated by metal ions Fe 2+ and Ni 2+ in the pH clock system, so as to realize the qualitative analysis of Fe 2+ and Ni 2+ . The qualitative analysis method of Fe 2+ and Ni 2+ involved in the present application has the characteristics of high accuracy, easy operation and convenience.

The polyethylene of the present invention is characterized in that it has an oxidation induction time of 10 minutes or more at a temperature of 210 to 230°C as measured by a rotational rheometer, and there is a peak corresponding to polypropylene when measured by NMR.

The present invention is a method for quantitatively detecting 2,3,6-trimethylphenol, which uses "NaClO2-C4H 13 A chlorite-ammonium-tetrathionate clock (CAT clock) reaction system using "NO (tetramethylammonium hydroxide)-Na2S4O6" as a substrate is used as a detection solution. The quantitative analysis of 2,3,6-trimethylphenol is achieved based on the different responses of the system to different concentrations of 2,3,6-trimethylphenol, namely, different induction times. The quantitative analysis method for 2,3,6-trimethylphenol involved in the present invention has the characteristics of high accuracy, easy operation, convenience and speed.