Introduction: Principles of Microwave Digestion (Sample Dissolution) Many chemical reactions are carried out in aqueous solutions or at least in the presence of water. Reactions that take place in solution, especially in aqueous solution, are governed by the interaction between the reactants and the solvent. By applying a microwave electromagnetic field, not only the diffusion and transfer of substances in solution can be promoted, but also other electrostatic effects can be induced, namely, changing the degree of solvent ordering and the structure of the ionic solvated shell, thereby deforming the electronic shells of atoms and molecules, which It is beneficial to the interaction between substances, improving the reaction efficiency and accelerating the chemical reaction. Features: 1. Closed microwave high temperature and high pressure digestion and dissolving platform 2. Support 220˚C / 3MPa digestion process 3. Support 6-bit 80ml Teflon (PFA) digestion tank 4. Support reciprocating rotation and uniform heating process 5. Intelligent control system, temperature, pressure, power closed-loop controllable 6. The experimental data curve is displayed and the data can be exported 7. User customization and additional expansion functions: 1000W high power, 100ml reaction tank system Technical parameter: microwave system 1. Microwave power: rated power 800W/2450MHz, stepless non-pulse continuous microwave power output 2. Design of microwave digestion cavity: ①304 stainless steel is welded into an explosion-proof cavity, which is strong and reliable; ②The inner surface is coated with multi-layer Teflon anti-corrosion coating, which is suitable for use in acid-base corrosion and high-temperature environments, and is easy to wipe and clean 3. Inner cavity size: about 30L functional system 1. Digestion system: 80ml volume PFA digestion tank, closed chemical digestion reaction system, supports temperature measurement, pressure measurement, explosion-proof and other functions 2. Temperature and pressure control: ①Temperature range: common working temperature is 0～220°C, short-term limit temperature is 230°C; ②Pressure range: the pressure range of common working conditions is 0～2.5MPa, and the short-term ultimate pressure is 3MPa; 3. Using optical fiber temperature measurement, plug-in temperature measurement method, high precision 4. Use contact pressure sensor for pressure measurement, timely and accurate 5. Scratching control: reciprocating 360° rotating motor mode, each tank is heated evenly 6. Process monitoring: ①The interior of the microwave cavity is equipped with LED spotlights, and the working conditions in the furnace cavity are monitored through the observation window of the door body ②Set the color video to monitor the reaction of the internal materials, and you can understand the working status of the reaction system through the video (optional) Control System 1. Using PLC programming control: good human-computer interaction, integrated control terminal, temperature, pressure and power are intelligently controllable 2. Touch screen dialogue window, easy and fast operation, real-time display of time, temperature, power curve, data can be read and stored 3. Multiple sets of program memory functions, which can store, modify, call, delete and other system operations on the program security system 1. The door body has multiple interlocking structure, the door is powered off, and the operator is protected 2. The door body adopts a side-pull locking structure, which has the function of elastic translation pressure relief, protecting the operator 3. The door body adopts λ/4 high impedance microwave anti-current suppression structure to ensure the health and safety of operators. Microwave leakage: <5mW/cm2 (better than the national standard) 4. The equipment is equipped with a negative pressure fan, which can quickly remove the exhaust gas in the furnace cavity and protect the operator Machine description 1. Equipment power supply: 220Vac / 50Hz, power consumption of the whole machine: 1300W 2. Appearance size: main body about: 560×505×500mm (width×height×depth) 3. Equipment weight: 60kg
Introduction: Principles of Microwave Digestion (Sample Dissolution) Many chemical reactions are carried out in aqueous solutions or at least in the presence of water. Reactions that take place in solution, especially in aqueous solution, are governed by the interaction between the reactants and the solvent. By applying a microwave electromagnetic field, not only the diffusion and transfer of substances in solution can be promoted, but also other electrostatic effects can be induced, namely, changing the degree of solvent ordering and the structure of the ionic solvated shell, thereby deforming the electronic shells of atoms and molecules, which It is beneficial to the interaction between substances, improving the reaction efficiency and accelerating the chemical reaction.
