2. Polyamides include nylon 6 polyamide sorbent can be divided into (polycaprolactam) and nylon 66 (polyhexamethylene adipamide), for hydrogen adsorption, chemisorption half. Polyamide molecule many amide group, C = O and phenolic groups on polyamides, flavonoids, acids in -OH or -COOH form hydrogen bonds. Amide group in an amino or nitro, and quinone classes of quinone compounds group or a nitro group to form hydrogen bonds. Since the substances to be separated in different structures or different structures of the compounds in the same class of reactive groups but the number and location of the ability to form hydrogen bonds to the polyamide obtained by separating different. According to the different electrical measurements, electrochemical analysis can be divided into the potential, electrolysis, conductivity and voltammetry. Potential method is by measuring the electrode potential analytical methods in order to obtain the content of the test substance. If the value is based on the potential of the measuring electrode shelf Shin fat, seeking direct count analyte content, called direct potential method; if according to the change in electrode potential titration to determine the end of the titration, called the potentiometric titration. Electrolysis is based on power, the analyte quantification deposited on the electrode in electrical nature of his analytical methods to determine the content of the analyte. Conductance method is based on the measurement and analysis solution conductance analysis method to determine the content of the analyte. Voltammetry is a micro-electrode into the test solution Shin fat use, when the use of electrolysis current - voltage curve and evolved based on a variety of analytical methods in general. No matter which type of electrochemical analysis method, must be carried out in an electrochemical cell, and therefore the basic principles of electrochemical cells is the basis for various electrochemical methods. Shin fat Shandong, Weihai Shin fat, Cheung dry chemical (View) by Andrew dry Jinan Chemical Limited. Jinan Cheung Dry Chemical Co. (www.xiangqianhuagong.com) (www.dilunyierchun.com) is a professional, "glycol" company. Since its inception, we adhere to the "good faith, sound management" approach, the courage to participate in healthy competition in the market, so that the "chemical universe" brand has a good reputation. We adhere to the "service first, customers first" principle, so that the dry chemical Xiang won the trust of customers in alcohol in public, establish a good corporate image. Special Note: This information is for reference pictures and information, please contact us to obtain the most accurate information, thank you! You can also access (www.dilunyierchun.com/supply_details_41829790.html), for more information about the company.