Element lampHollow cathode lamp, also known as hollow cathode lamp, is a special light source that can excite a fixed wavelength. It is widely used in analytical instruments such as atomic absorption spectrometer and atomic fluorescence spectrometer to detect the content of specific elements in samples. Element lamps work based on the characteristic spectral lines of elements. When current passes through, the elements inside the lamp are excited, producing light of a specific wavelength. After passing through the spectroscopic system, these rays are detected by the instrument to determine the presence and content of the corresponding elements in the sample. The discharge is concentrated in the cathode cavity, generating a glow discharge through the collision of electrons with carrier gas atoms, which in turn excites characteristic spectral lines of element emission.
Element lampMain application scope:
1. Environmental monitoring
This is one of the core application areas of element lamps, used for evaluating and monitoring environmental quality.
Water quality analysis: detecting heavy metal pollution in surface water, groundwater, drinking water, industrial wastewater, and domestic sewage, such as lead (Pb), mercury (Hg), cadmium (Cd), arsenic (As), chromium (Cr), copper (Cu), zinc (Zn), etc.
Soil and sediment analysis: Determine the heavy metal content in soil and sediment, evaluate land pollution status and ecological risks.
Atmospheric particulate matter analysis: By collecting PM2.5, PM10 and other particulate matter in the air, analyzing their metal elements, and studying the sources of atmospheric pollution.
Solid waste testing: Conduct leaching toxicity tests on harmful elements in industrial waste, electronic waste, etc.
2. Food safety
Ensuring that there are no harmful elements exceeding the standard in food is an important application of elemental lamps in the field of people's livelihood.
Heavy metal residue detection: detecting harmful heavy metals such as lead, cadmium, mercury, arsenic, etc. in food such as rice, tea, vegetables, fruits, aquatic products, and meat.
Nutritional element analysis: Determine the content of beneficial trace elements such as calcium (Ca), iron (Fe), zinc (Zn), selenium (Se) in food, and evaluate the nutritional value of food.
Infant and toddler food and health products: strict monitoring of element content is carried out on infant formula, complementary foods, nutritional supplements, etc. to ensure their safety and effectiveness.
3. Pharmaceutical and Life Sciences
There are strict requirements for elemental impurities in drug research and development, production, and quality control.
Drug impurity detection: According to the requirements of international pharmacopoeias (such as USP, ChP), detect catalyst residues (such as palladium Pd, platinum Pt, rhodium Rh) and other harmful elements in raw materials and finished drugs.
Biological sample analysis: determination of trace elements or toxic elements in biological samples such as blood, urine, and tissue, used for disease diagnosis (such as lead poisoning), metabolic research, and toxicology research.
Medical devices: detect the metal composition and dissolution of implantable medical devices (such as stents, artificial joints).
4. Geology and Mining
Used for exploration, development, and process control of mineral resources.
Ore grade analysis: Quickly determine the content of valuable elements such as gold (Au), silver (Ag), copper, iron, aluminum (Al), manganese (Mn) in ores and concentrates.
Geological exploration: Analyze rock and mineral samples, study geochemical characteristics, and guide mineral exploration.
Metallurgical process control: Monitor the elemental composition of raw materials, intermediate products, and final products during the smelting process to ensure product quality.
5. Chemical and Materials Science
Chemical product analysis: detecting metal elements in chemical raw materials, catalysts, and additives.
Materials research: Analyze the composition of new materials such as alloys, ceramics, semiconductors, and nanomaterials, and study the relationship between their properties and elemental composition.
Electroplating and surface treatment: Monitor the concentration of metal ions in the plating solution to ensure the quality of the coating.
6. Research and Education
Universities and research institutions: used for basic research and teaching experiments in laboratories of disciplines such as chemistry, environment, materials science, and biology.
Third party testing agency: As the source of testing data, it serves government supervision, enterprise quality inspection, and consumer rights protection.