Atomic Absorption Spectroscopy (AAS) is an analytical technique used for determining the concentration of a particular element within a sample. It works by measuring the absorption of light (specifically, ultraviolet or visible light) by free atoms in the gaseous state. This method is highly sensitive and can detect elements at very low concentrations, making it invaluable in fields such as environmental analysis, pharmaceuticals, and food safety.
Hollow cathode lamps in AAS emit element-specific light, enabling precise identification and quantification, and provide stable, intense light for high sensitivity and accuracy. They also aid in background correction and calibration, ensuring reliable and consistent measurements.
High-Performance Liquid Chromatography (HPLC) is an analytical technique used to separate, identify, and quantify components in a liquid mixture. This sophisticated analytical technique is widely used in chemistry, biochemistry, and pharmaceutical science. It operates by passing the sample through a column packed with a stationary phase while a liquid solvent (mobile phase) carries the components at different speeds based on their chemical interactions.
HPLC is widely used in laboratories for drug testing, purity analysis, and detecting contaminants in various industries. It is prized for its precision, sensitivity, and speed, making it indispensable for applications such as quality control, environmental analysis, and food testing.
Hollow Cathode Lamps (HCLs) are the most commonly used light sources in AAS. They consist of a cathode made of the element to be analyzed and an anode, both enclosed in a glass tube filled with an inert gas. When a voltage is applied, the gas becomes ionized, and the ions strike the cathode, causing the emission of light characteristic of the cathode material.
Deuterium Lamps are used as continuous light sources in UV spectroscopy and High Performance Liquid Chromatography (HPLC). They produce a stable and intense UV light, which is essential for accurate measurements. These lamps are particularly useful for background correction in atomic absorption measurements.
Tungsten Halogen Lamps provide a broad spectrum of light, covering the visible to near-infrared range. They are often used in conjunction with Deuterium lamps to provide a complete UV-Vis-NIR spectrum for various analytical techniques.
Xenon Lamps emit a continuous spectrum of light from the UV to the visible range. They are known for their high intensity and stability, making them suitable for a wide range of spectroscopic applications, including fluorescence and absorbance measurements.
Mercury UV Detector Lamps are used in UV spectroscopy for their sharp emission lines, which are ideal for calibration and wavelength accuracy checks. These lamps are commonly used in environmental and industrial applications.
Photoionization Detector (PID) Lamps are used in gas chromatography and mass spectrometry. They ionize gases using UV light, allowing for the detection of volatile organic compounds (VOCs) at very low concentrations.
Graphite Furnace Tubes are used in Atomic Absorption Spectroscopy for the electrothermal atomization of samples. These tubes are made from ultra-pure, high-density graphite and are coated with a layer of pyrolytically deposited graphite. They provide a controlled environment for the sample, allowing for precise and sensitive measurements of sample concentrations.
Ensure that the lamps and tubes you purchase are compatible with your specific instrument model. Using the correct components is crucial for optimal performance and accurate results.
High-quality and pure materials are essential for reliable and reproducible results. Choose products made from ultra-pure materials to minimize contamination and ensure the highest level of accuracy in your measurements.
Select lamps that provide stable and intense light for accurate measurements, have a longer operational life to minimize replacements, and meet the specific requirements of your analytical application, including wavelength range and type of analysis.
REFLEX Analytical Corporation offers a wide range of high-quality spectroscopy accessories, including lamps and graphite furnace tubes. Here are some reasons to choose REFLEX Analytical Corporation:
