full
image
#666666
http://www.aurorabiomed.com/wp-content/themes/aurora-clean/
http://www.aurorabiomed.com/
#0066FF
style2

Atomic Fluorescence Spectroscopy


Atomic fluorescence spectroscopy is a technique used in biochemical, medical and chemical applications that require very high sensitivity as well as precision and accuracy. An atomic fluorescence spectrometer is capable of measuring samples containing both hydride-forming elements and Mercury at a parts per trillion (ppt) level using the unique vapour hydride generator. The high sensitivity and reliability of Aurora’s series of Atomic Fluorescence Spectrometers is ideal for elemental analysis in a variety of research sectors.
Download Brochure





Atomic Fluorescence Theory

The technique behind atomic fluorescence spectroscopy is similar to atomic absorption spectrometry in that a sample absorbs light at a particular wavelength to promote its electrons from its ground electronic state into an excited state. From this excited electronic state, the electron drops down to a lower electronic state emitting a photon with a specific wavelength in the process. By measuring the intensity of the emitted light at particular frequencies, it is possible to determine the concentration of the element being measured.




Vapour Hydride Generator

The vapour hydride generator ensures a sensitive measurement of hydride forming elements, of which mercury detection is the most common application. Mercury analysis is a critical component of several industries, including food and water safety, agriculture and environmental monitoring. Samples must be digested prior to analysis to ensure for accurate analyte measurement. The sample is then atomized and any free atoms are excited by ultraviolet light emitted by a hollow cathode lamp. Consequently, the excited atoms re-radiate the absorbed energy at particular frequencies which allows for quantification and analysis. This technique is sensitive and linear over a wide range of concentrations. Providing enhanced sensitivities, reduced interferences, and extremely low detection limits for the determination of sub-trace levels of hydride-forming metals, Aurora’s revolutionary all-in-one design allows for optimum performances for any application requiring either mercury detection or analysis of any hydride forming element. With unbeatable sensitivity and the best technique to detect and analyze hydride-forming elements, Aurora offers a solution that is more sensitive, cost-effective and reliable than traditional mass spectrometry techniques.

For more information, please review the LUMINA 3300 Atomic Fluorescence Spectrometer brochure or contact us directly to discuss your specific application.

Frequently Asked Questions

LUMINA3300 and 3400 Atomic Fluorescence Spectrometers provide sub-trace detection and elemental analysis of hydride-forming elements. The unique vapor/hydride generator provides enhanced sensitivities and reduced interferences for detection of Mercury (Hg), Arsenic (As), Cadmium (Cd), Zinc (Zn), Bismuth (Bi), Selenium (Se), Tellurium (Te), Antimony (Sb), Tin (Sn), Germanium (Ge), and Lead (Pb).

Detection limit for the following elements is specified in table in below:

Element Detection Limit (μg/L) RSD (%)
As, Se, Pb, Bi, Sb, Te, Sn 0.01 <1.0
Hg, Cd 0.001 <1.0
Zn <1.0 <1.0
Ge <0.05 <1.0

LUMINAAFS system uses quartz tube furnace with automatic ignition of Ar-H2 diffusion flame that reduces interference. It is also equipped with a two-stage gas/liquid separator and integrated exhaust system with filter that can efficiently decontaminate pollutants during sample preparation and delivery steps.

Yes, LUMINA AFS system utilizeCold Vapormethod for mercury detection. Mercury analysis is a critical component of food and water safety, agriculture and environmental monitoring. Samples must be digested prior to analysis to ensure for accurate analyte measurement.

Yes, LUMINA AFS system utilizeCold Vapormethod for mercury detection. Mercury analysis is a critical component of food and water safety, agriculture and environmental monitoring. Samples must be digested prior to analysis to ensure for accurate analyte measurement.

Yes, the Cold Vapor method used by LUMINA Atomic Fluorescence Spectrometer series is the procedure recommended by USFDA for detection of Mercury at ppb or sub-ppb levels. In the ICP (inductively coupled plasma) method, the plasma is too hot and will lead todecomposition of Hg andtherefore provide unreliable results.

Yes, LUMINA includes an optional XYZ autosampler for sample introduction that hosts a maximum of 192 standard cup/test tube sample racks. It is compatible with standard solvent extraction test tubes, ICP test tubes and custom-made trays.

LUMINA 3300 and 3400Atomic Fluorescence Spectrometers are equipped with specially-designed high intensity Hollow Cathode Lamps (HCL) with 2-channel independent power supplies, providing improved sensitivities and lower detection limits. It also features dual channel, simultaneous, two-element analysis, using computer controlled, modulated, pulsed light sources.

default
Loading posts...
link
#6E787E
on
fadeInUp
loading
#6E787E
off
Back