Why Graphite Furnace Atomization gives higher sensitivity over Flame Atomization

You may have all along heard that for higher detection limits you should opt for graphite furnace atomization instead of flame atomization. I presume that this was taken for granted without going into the reasoning behind the statement. The first step is to have a basic understanding of the fundamental concept of the two popular […]

Comparative evaluation of sample digestion techniques for Atomic Absorption Spectroscopy

Trace metals analysis by Atomic Absorption Spectroscopy requires the introduction of the sample into the system as a homogeneous liquid. It is necessary to digest solids for complete extraction of analyte(s) of interest into the solution. Commonly used practices are: Acid digestion Fusion Ashing The technique adopted should be safe, reproducible and afford to save […]

How to safely carry out laboratory digestions

Digestions become necessary for dissolving solid samples and powders homogeneously in a liquid medium for further analysis. Such samples are not readily soluble and often require harsh treatment with an acid or a combination of acids under application of heat. Two common digestion modes are open acid digestion and microwave digestion. Use of concentrated acids and […]

Advantages of direct solid sampling in Atomic Absorption Spectroscopy

Ever since its introduction as a versatile technique for trace metal analysis Atomic Absorption Spectroscopy has utilized liquid sample introduction as universally accepted mode of sample introduction. This mode supports analysis using both flame and graphite furnace atomization techniques. Slurry sampling gained popularity with monitoring and control of manufacturing processes. However, it was accompanied with […]

Benefits offered by Super Hollow Cathode lamps in AAS determinations

The two commonly used light sources in Atomic Absorption Spectroscopy are Hollow Cathode Lamps and Electrodeless Discharge Lamps . In most laboratories hollow cathode lamps are in predominance due to their lower cost and convenience of use. However, electrode-less lamps provide improved sensitivities in analysis of several volatile elements. As an analyst your main expectation is […]

Maintenance of Graphite Furnace Atomization Atomic Absorption Spectroscopy Systems

Graphite Furnace Atomization assembly is optionally available along with the flame version for analysis of trace metals on Atomic Absorption Spectroscopy systems. Graphite Furnace Atomic Absorption Spectroscopy highlights the features and benefits of this option. In order to get highest levels of reliability of results regular maintenance is an absolute must. An earlier article – Tips […]

Prevention of contamination in trace metal analysis laboratories

Today advanced sophisticated analysis techniques are capable of providing trace metal analysis in ppm, ppb or even ppt levels. The most popular techniques are Atomic Absorption Spectroscopy, ICP – MS and ICP – OES. Determinations at low levels can be reliable only if adequate precautions are taken at different stages of analysis such as sampling, […]

Tips for the maintenance of the Flame Assembly of AAS

The flame assembly can be considered as the heart of the AAS. It comprises of three main comments : the nebulizer, spray chamber and the burner head. Regular upkeep and maintenance of the component parts can provide a long service life span of the instrument, minimum breakdowns and a higher reliability on results. The article […]

Sampling essentials for Water analysis using Atomic Absorption Spectroscopy

Analysis of trace metals in water is an important application of Atomic Absorption Spectroscopy. Trace metals in water play a crucial role as majority of metals act as essential nutrients at low concentrations but excess levels can have harmful consequences. It is imperative to test for concentration levels of trace metals in water before it […]

Wear Metal Analysis in Used Oils- A potential application area of Atomic Absorption Spectroscopy

Engines constitute an important power generation source in road transport vehicles, aviation and small scale power generation for industrial and agricultural applications. The efficiency of running of different types of engines depends on their regular maintenance and monitoring of condition of component parts. It is neither practical nor desirable to disassemble an engine every time […]