Coated graphite tubeIt is a high-performance analytical tool coated with special materials on the surface of graphite tubes, widely used in fields such as atomic absorption spectroscopy (AAS) analysis, high-temperature mass transfer, and chemical research. Its core advantage lies in significantly improving the high temperature and corrosion resistance of graphite tubes through coating technology, while extending their service life and improving analysis accuracy. It is composed of a graphite substrate and a surface coating. The coating material is usually pyrolytic graphite, tungsten carbide, or refractory metal carbides (such as TaC, ZrC), which are formed into a dense protective layer by vacuum deposition or immersion method.
Coated graphite tubeScope of application:
1、 Environmental monitoring
Water quality analysis: detecting trace heavy metals such as lead (Pb), cadmium (Cd), mercury (Hg), arsenic (As), selenium (Se), chromium (Cr), copper (Cu), zinc (Zn), nickel (Ni), etc. in drinking water, surface water, groundwater, seawater, and wastewater.
Soil and Sediments: Analyze the heavy metal pollution status in samples such as soil, sediment, and dust.
Atmospheric particulate matter: After digesting the collected PM2.5 and PM10 filter membranes, the metal element content in them is determined.
2、 Food and agricultural product safety
Detection of harmful elements in food: detecting harmful heavy metal residues such as lead, cadmium, arsenic, mercury, etc. in rice, flour, vegetables, fruits, meat, aquatic products, dairy products, etc.
Analysis of Food Nutrients: Determine the content of essential trace elements such as calcium (Ca), magnesium (Mg), iron (Fe), zinc (Zn), copper (Cu), selenium (Se), manganese (Mn), etc. in food.
Liquor and beverage: analyze the metal elements in Baijiu, wine, fruit juice, etc.
Migration of Packaging Materials: Detecting the migration of harmful metals from food packaging materials into food.
3、 Clinical and Life Sciences
Biological fluid analysis: precise determination of trace elements (such as Zn, Cu, Se, Fe) and toxic elements (such as Pb, Cd, Hg, As) in blood, serum, urine, cerebrospinal fluid, etc., used for disease diagnosis (such as heavy metal poisoning, metabolic diseases), nutritional status assessment, and biomedical research.
Organizational and cellular analysis: Perform elemental analysis on digested tissue samples.
4、 Materials Science and Metallurgy
High purity material analysis: detecting trace impurity elements in semiconductor materials, high-purity metals, special alloys, ceramics and other materials to ensure material purity.
Alloy composition analysis: precise determination of major, minor, and trace elements in complex alloys.
Catalyst analysis: Determine the content and distribution of precious metals (such as Pt, Pd, Rh) in the catalyst.
5、 Geology and Mineral Resources
Rock and Mineral Analysis: Trace element geochemical analysis of geological samples for mineral exploration and geological research.
Precious metal detection: Determine the content of precious metals such as gold (Au), silver (Ag), platinum (Pt), palladium (Pd) in ores, concentrates, and tailings (usually measured after enrichment).
6、 Pharmaceutical and Chemical Industry
Drug quality control: According to pharmacopoeia requirements (such as USP<232>/<233>, ICH Q3D), detect catalyst residues (such as Pd, Pt, Rh, Ir) and toxic element impurities (such as Pb, Cd, As, Hg) in raw materials, excipients, and finished drugs.
Chemical analysis: detecting metal impurities in chemical products.
7、 Industrial Process Control
Electronic industry: detecting metal impurities in electronic chemicals (such as high-purity acids, bases, solvents) and plating solutions.
Petrochemical industry: Analyze metal elements (such as V, Ni, Fe, Cu) in crude oil, lubricating oil, and additives, evaluate catalyst activity and equipment corrosion status.