By J. Sneddon
Quantity 7 keeps the culture of earlier volumes during this sequence by way of offering state of the art and present advances in atomic spectroscopy. This quantity makes a speciality of the appliance of atomic spectroscopy fairly ICPMS, with an emphasis within the region of medical and organic samplesNew suggestions resembling double focusing and field-flow fractionation ICP-MS are awarded. different parts similar to laser prompted breakdown spectrometry and new purposes of graphite furnace AAS are incorporated. a huge subject of a number of the chapters is speciation, that is the most well liked subject in elemental decision at the present. ?·Focuses on state-of-the-art advances in atomic spectroscopy?·Contributors are leaders of their fields?·Can be utilized in conjunction with the opposite books within the sequence or as a stand-alone identify
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Xxxi CHAPTER 7 Application of Graphite Furnace Atomic Absorption Spectrometry in Biological and Clinical Samples Graphite furnace atomic absorption spectrometry (GFAAS) is an established, and reliable analytical technique for trace and ultra-trace metal determination in may samples. Despite its wide acceptance and maturity, it continues to find new applications. This chapter will primarily focus on these new applications as it applies to clinical and biological samples. Following a brief overview of the technique and instrumentation, the results and recent applications will be presented.
4 Applications For several elements, ICP-MS provides lower detection limits than other techniques and for some, it is the only technique capable of achieving reliable results at the concentrations found in biological fluids and tissues. Even when these concentrations are much lower than those associated with known clinical effects, establishing their ranges for unexposed subjects is essential to serve as references in the assessment of exposure to environmental pollutants. It should be borne in mind that became of this higher power of detection, control of contamination is of the utmost importance, requiring in some cases, specialised handling facilities, such as Class 100 laboratories.
Collision cells are already used in organic mass spectrometry, to study controlled processes of fragmentation of organic molecules. Their application in inorganic mass spectrometry has been shown to reduce greatly most spectral interferences affecting the determination of elemems in Q-ICP-MS, by inducing the dissociation of major molecular ions to Atomic Spectrometry in the Clinical Laboratory 13 their atomic species. In addition, the reduction in ion energy spread resulting from the collisions improves ion transmission efficiency, sensitivity of elements and precision of isotope ratios [90-92].
Advances in Atomic Spectroscopy by J. Sneddon