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Company information:
Leapion in Laser Machine business since 2007, we are a global manufacturing company producing Laser engravers,laser markers,CNC Router,UV inkjet printers for various applications such as signage,advertising, Woodworking furniture. Pneumatic CNC Machine,Simple ATC Machine,Multi Head CNC,2 Spindle CNC Router Shandong Leapion Machinery Co., Ltd. , http://www.leapionlaser.com
At present, the focus of the inspection of Chinese herbal medicines includes pesticide residues, excessive heavy metal problems, and abuse of Chinese medicines (antibiotics and hormones). When testing, some Chinese medicines can not be put on the instrument directly and must undergo tedious sample pretreatment. Digestion and extraction are commonly used pretreatment methods for the determination of inorganic components such as heavy metals to be eliminated, and for the determination of organic residues such as pesticide residues and drugs.
However, for a long time, traditional sample pretreatments accounted for more than two-thirds of the total inspection time, and the effect of processing was sometimes unsatisfactory, which severely restricted the speed and accuracy of inspections and became an obstacle to inspection. A major bottleneck in the level of progress.
Microwave sample preparation is a new technology that has emerged in recent years. Its application in analytical chemistry and organic chemistry, etc., has seen rapid development at home and abroad in recent years, and the application field has been expanding, extending from microwave analysis of inorganic analysis to organic. Analytical microwave extraction and microwave synthesis.
On the one hand, due to the microwave heating inside and outside consistency, eliminating the traditional heating of the temperature gradient, a substantial increase in heating rate; the other hand, due to microwave non-thermal effects, accelerate the intermolecular movement and collision, high-power microwave can help molecules Rapid decomposition (digestion); while low-power continuous microwaves can relieve intermolecular forces, allowing the analytical target to be resolved from the matrix and rapidly enter the solvent (extraction); at the same time, the microwave action enables different substances to react quickly and uniformly. The generation of new substances (syntheses) takes a long time or even difficult to obtain to achieve the conventional methods. In general, compared with traditional sample pretreatment methods, microwave sample preparation is a new technology that replaces traditional methods because of its advantages of high speed, high efficiency, complete recovery, low reagent consumption, and environmental protection and cleanliness.
It can be seen that the advantage of microwave sample preparation technology is extremely obvious, or it will replace the traditional method. However, detection equipment needs more technical support, so related companies still need to continuously improve their technology and gradually approach the advanced level in foreign countries.
Microwave sample preparation applications are expanding or will replace traditional methods
In recent years, with the continuous improvement of the technical barriers set by the foreign countries on Chinese medicine, the safety and quality testing of Chinese herbal medicines have been raised to an unprecedented level. Drug testing equipment has become a hot product in the industry and has become more widely used.