Guoda Instrument Co., Ltd. is a high-tech enterprise specializing in R&D, production, sales and service of chromatography products and laboratory equipment. Sales and customer service outlets throughout the country have developed into an integrated supplier of instrumentation and chromatography consumables with a certain influence and scale in the domestic analysis industry.
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Heavy metal element omnidirectional detection program - automatic atomic absorption spectrophotometer - intelligent microwave digestion instrument - Guoda Instrument
The most important heavy metal elements for human toxicity are lead, mercury, chromium, arsenic, copper and cadmium. The most common analytical method is atomic absorption. In particular, the heavy metal elements in traditional Chinese medicine decoction pieces and traditional Chinese medicine preparations are most concerned about human body damage. The heavy metals in Chinese medicinal materials are mainly derived from the soil in which they are grown. The industrial “three wastes†are discharged into the soil and air, and the medicinal materials are passively absorbed. In the process of fertilization and pest control, the heavy metals of chemical fertilizers and chemical pesticides are absorbed by the medicinal materials. The culture of Chinese medicine is the jewel of the Chinese nation. It leads the world in medicine. After China's accession to the WTO, the export sales of traditional Chinese medicine decoction pieces and Chinese patent medicines increased year by year. As Chinese pharmaceutical companies go abroad and participate in the competition in the international pharmaceutical market, heavy metal elements in Chinese medicine products are detected. The method and limited edition of the 2015 Chinese Pharmacopoeia have given clear regulations, in which lead must not exceed 10mg/kg; cadmium should not exceed 1mg/kg; arsenic should not exceed 5mg/kg; mercury should not exceed 1mg/kg; copper should not exceed 20mg/kg. Guoda Company comprehensively combines the latest national standards, comprehensively combines the latest edition of the 2015 edition of the Pharmacopoeia of the People's Republic of China, and based on the GMP Guide for Drugs (2010 edition), it introduces a comprehensive inspection scheme for heavy metals to users. The scheme is applicable to various Chinese herbal medicines. Heavy metal elements in feed, food, biology, chemistry, universities and other industries!
Principle of the method: the sample is subjected to microwave digestion, lead and cadmium are used as atomizers for graphite furnace, copper is determined (flame method), air-acetylene flame, arsenic determination (hydride method), determination of mercury (cold atom) - Hydride method) According to the atomic absorption spectrophotometry (2015 edition of the "Chinese Pharmacopoeia" related requirements), measured at the specified wavelength, calculated, that is. Determine if the sample is acceptable.
Sample preparation: fully digest the organic matter, so that the element to be tested is completely dissociated, and the element to be tested can not be lost effectively to prevent or reduce the contamination of the test solution by reagents, operating environment and the like.
Standard curve: The standard curve method is adopted, that is, the standard curve must be followed for each measurement. The standard substance is a single element standard solution (provided by the National Standards Research Center). The standard curve should be separately used with the new standard, and the linear regression of the quadratic equation is used. Coefficient requirement ≥0.995
Blank test: The SP series atomic absorption spectrophotometer with atomic absorption spectrophotometry is highly sensitive and highly susceptible to contamination by containers, reagents, water, laboratory environment, etc. Therefore, each test must be accompanied by a blank test. The sample measurement results should be deducted from the blank value before calculation. If the blank value is too high, the determination is credible; nitric acid and perchloric acid should be high-purity reagent; hydrochloric acid, sulfuric acid, ammonium dihydrogen phosphate, magnesium nitrate should be pure grade, potassium iodide, ascorbic acid and hydroxylamine hydrochloride are analytically pure. Before inspection, the content of relevant metal elements in each reagent should meet the requirements of the determination; water should be prepared by ultra-pure water machine, and the content of relevant metal elements should be checked before use.
Matters needing attention: Grasp the characteristics of trace analysis and analysis, to the laboratory environment, analytical instruments, capacity vessels, laboratory water, reagents, to avoid pollution. Laboratory safety, self-protection, strict implementation of safety protection measures, and operation in accordance with standard procedures to ensure the safety of the laboratory and inspectors themselves.
The SP series atomic absorption spectrophotometer equipped in the heavy metal element detection program has high precision and good reproduction. The national BECIA has won many award-winning brands. The flame, graphite furnace and hydride generator are perfectly configured to meet lead, chromium, arsenic, mercury and copper. ....50 kinds of heavy metal element detection requirements, 2 light frame, 4 light frame, 8 light frame and 97 sample position automatic sample introduction system, make heavy metal element detection intelligent, precise and easy to operate. The system is equipped with an abnormal pressure monitoring system, automatic cut-off, safe flameout, automatic protection alarm function, 100% commitment to operational safety. The audit tracking data processing system that keeps pace with the times is perfectly integrated with the special counter-control. It meets the GMP certification of pharmaceutical companies and the new Pharmacopoeia of 2015. The one-stop service of distribution and installation allows you to buy peace of mind, with peace of mind! more
For all kinds of consumables and supporting devices related to heavy metal element detection, you can enjoy the preferential price. For technical consultation service hotline, please call the sales hotline 400-1158-566.
Guoda Instrument Co., Ltd. is a high-tech enterprise specializing in R&D, production, sales and service of chromatography products and laboratory equipment. Sales and customer service outlets throughout the country have developed into an integrated supplier of instrumentation and chromatography consumables with a certain influence and scale in the domestic analysis industry. Chromatographic products include: chromatographic reagents, liquid chromatography columns, quartz capillary columns, solid phase extraction cartridges, and UV xenon lamps and other special chromatographic accessories and consumables; instrument products include liquid chromatograph, gas chromatograph, atomic absorption spectrometry Photometer, microwave digestion instrument, thin layer chromatography, ultraviolet spectrophotometer, electronic balance, biological safety cabinet, purification workbench and various laboratory drying ovens, incubators, biochemical instruments and shakers, etc., widely used In the pharmaceutical, medical, pesticide, food and chemical, agricultural environmental protection, health and epidemic prevention, universities, scientific research and other units. The company adheres to the road of science and technology and has a strong professional service team. It is a strategic partner of many well-known brands in China. The company attaches great importance to scientific management, adhering to the "brand, quality, professional, honest" cultural philosophy, and strives for the cooperation and recognition of thousands of households with the product quality of excellence and the long-term service of professional integrity. We adhere to the implementation of the international quality assurance system to ensure that users have no worries, more product clicks; company mailbox: [email protected]
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