Year1
- 规格：
- 5ml~1000ml
- 使用温度：
- 200℃~230℃
- 压力：
- 5mpa
Heavy metal elements in rice
High-pressure digestion tank for cadmium detection
1. Introduction:
Nanjing Ruinike Technology’s high-pressure digestion tank for heavy metal element cadmium detection in rice is also called a high-pressure digestion tank , sample dissolver, pressure dissolve bomb, pressure digestion tank, pressure digester, digestion tank, PTFE high pressure tank. -- (Wen Li-) Our company's digestion tanks have solved the problems of customers with large quantities, high requirements, small size and difficulty in digestion during the digestion process.
Cadmium is a heavy metal ranked No. 1 in the periodic table of chemical elements. In nature it occurs as a compound in minerals. Long-term human intake of cadmium can cause cancer and low-dose intake is also harmful to health. Cadmium poisoning in the human body is mainly caused by ingesting water, food, and air contaminated with cadmium through the digestive tract and respiratory tract. Because the human body has its own metabolic function, cadmium can accumulate in the human body for years and years, causing lesions in the kidneys and other organs, causing bone pain, and may also affect the health of the next generation.
This standard stipulates that the limit of cadmium in rice is./The specified detection method shall be measured according to the method specified in. In addition, the new version of "Limits of Contaminants in Food" (-) has been reviewed by the directors' meeting of the National Food Safety Standards Review Committee and was officially announced on the website of the Ministry of Health on the day of the month. The standard will be officially implemented on the day of the month.
Our company has launched a high-pressure digestion tank to solve the problem of sample digestion. Moreover, the inner cup can also be used with the acid catching board of our unit
It can be used for acid catching and digestion in the later stage, such as: D in Taiyuan City, Shanxi Province, D in Xinzhou City, Shanxi Province, D in Zhongshan City, Guangdong Province, and D in Nanshan District, Shenzhen City, Guangdong Province. , Nanning City, Guangxi Province D, Beihai City, Guangxi Province D, Guangxi Zhuang Autonomous Region Food and Drug Inspection Institute, Beijing Institute of Botany, Chinese Academy of Sciences, Nanjing Soil Research Institute, Chinese Academy of Sciences, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Nanjing University, Qingdao CTI, Beijing CTI , Shanghai CET and other feedback results are very good.
The temperature of the high-pressure digestion tank in the oven can reach ℃ withstand pressure
.
The inner cup is made of high-purity experimental grade polytetrafluoroethylene. The metal element blank value is low, and the lead and uranium content are less than 100%. No dissolution and precipitation, no added return materials, and extremely low background. The outer tank is made of national standard stainless steel.
In addition: According to the specific requirements of the experiment, Nanjing Ruinike has also independently developed an imported polytetrafluoroethylene inner cup that can withstand higher temperatures, penetration and deformation.
Selected materials, no recycled materials added, clean processing environment, optimized processing technology to ensure extremely low background.
2. Features of the high-pressure digestion tank:
Good sealing: the inner cup of the high-pressure digestion tank has a concave and convex tongue-and-groove design and the inner cup lid has a pointed bottom design to facilitate sample collection after the experiment.
, Safety: Unique design, fine workmanship, vent holes on the top of the cup, high safety factor, even if the temperature is out of control, only the inner cup will deform and the outer can will not be damaged.
It has high digestion efficiency and strong ability to digest many samples that are difficult to digest with traditional methods. It has wide adaptability.
The low element blank value of the inner cup improves the accuracy and precision of analysis and reduces work intensity and environmental pollution.
The inner cup/outer can are sequentially numbered to facilitate equal opportunity use.
, low cost and easy to use. There is very little investment in the early and late stages, and it is easy to operate. The operator requires almost no training before use and is simple to maintain.
The inner cup can be changed to imported polytetrafluoroethylene
(Microwave tank inner tank material)
More resistant to penetration and deformation, lower background ensures higher use temperature.
The selected materials for the inner and outer tanks, many years of production experience, and the quality assurance recognized by many users are trustworthy.
Product name
Specifications
Material
Working temperature ℃
Pressure
=> High pressure digestion tank
=> Experimental grade high purity,
National standard stainless steel
=>
=>
3. Working principle:
/> High-pressure digestion tank: The use of the high-temperature and high-pressure sealing system (strong acid or strong alkali) environment in the tank to achieve the purpose of rapid digestion of insoluble substances can greatly shorten the digestion process and minimize the volatilization loss of the tested components. The accuracy of the measurement is a powerful assistant for digesting samples when measuring trace elements and trace elements.
It is widely used in sample preprocessing for chemical analysis methods such as spectrum mass spectrometry (-), atomic absorption and atomic fluorescence. It is used in food, geology, metallurgy, commodity inspection, nuclear engineering and other systems to digest pesticide residues, medicines, food, rare earths, water, etc. Heavy metals such as, Sample pretreatment digests heavy metals, pesticide residues, food, sludge, rare earths, aquatic products, organic matter, etc.
Our company’s domestically exclusively developed
Imported polytetrafluoroethylene
Inner cup
Features: --(Wenli-)
The inner tank is of high purity experimental grade Imported enhanced modified materials
Compared with: In addition to all the advantages of the imported modified materials, it also has some improved characteristics: it has a lower background to ensure better resistance to deformation, penetration resistance, and recoverability under high temperature and high pressure, which is times The appearance is closer to jade white
, the maximum operating temperature is the limit or even up to
, the special R&D and production process ensures the smoothness of the extra-long tanks of special manufacturers (such as), which can be customized in microwave digestion instruments of various manufacturers and specifications. The tank is used with the original microwave digestion instrument
. The processing technology is optimized through special finishing to ensure extremely low background value (blank value). The manufacturer's processing technology can also affect your experimental results
. For imports The inner tank supporting the microwave digestion instrument, especially the inner tank that is widely used
, the processed inner cup can be as good as the experimental data of the general product of the instrument and that of the original import
, and is provided for use with various types of microwave digestion instruments The inner tank is made of all materials and the lid is made of transparent material. The tube body and gasket are all made of natural materials and all materials are available for customers to choose
. We are the only company that can customize the inner tank that comes standard with each manufacturer's instruments. At the same time, we are committed to product quality and originality. Factory consistency has the best price/performance ratio.
The high-pressure digestion method is recognized as a standard method by relevant departments in my country, such as,,,,,/,/-, etc. The United States also stipulates that this method is the standard decomposition method of samples for the determination of elements such as , , , , , and .
Advantages and disadvantages of three commonly used methods for sample pretreatment:
Advantages of high-pressure digestion
: safety, low initial investment, simple equipment, easy operation, less sample and reagent consumption, low blank value, Avoid contamination, sample processing is safe and thorough, high accuracy, and can process samples in large batches
Limitations
: The sample processing cycle is slightly longer, the temperature and pressure cannot be controlled, and the appearance is simple
Advantages of room temperature digestion method< br/>: Low investment, simple equipment, easy operation, large amount of reagents, average accuracy, short working cycle, and can process large batches of samples
Limitations
: Easy to stain, pollute the environment, and damage the operation Personnel health, poor precision, slightly more reagents, limitations for some insoluble samples
Advantages of microwave digestion
: safety, temperature and pressure control, high efficiency in small batches, samples and reagents Less dosage, low blank value, avoid contamination, high accuracy, high degree of intelligence
Limitations
: Large investment in the early and late stages, high requirements for operators, limitations for certain samples, and Large loss, incomplete digestion, low working temperature, and inability to achieve maximum temperature and pressure at the same time
Nanjing Ruinike Technology Development Co., Ltd.
Sales Department: Wen Li
Telephone: -
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