Page 190 - An Introduction to Analytical Atomic Spectrometry - L. Ebdon
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2 Why is it necessary to perform pre-reduction before hydride generation?
3 This method can be extended to speciate other forms of arsenic such as arsenobetaine. What
problems would you forsee using this method to determine arsenobetaine, and what modifications to
the method could you perform to overcome them.
B.6.5 References
1. Skoog, D.A. and Leary, J.A. (1992) Principles of Instrumental Analysis, 4th edition, Saunders
College Publishing, Orlando.
2. Christian, G.D. (1994) Analytical Chemistry, 5th edition, Wiley, New York.
3. Alkemade, C.Th.J. and Herrmann, R. (1979) Fundamentals of Analytical Flame Spectroscopy,
Hilger, Bristol.
4. Cresser, M. (1994) Flame Spectrometry in Environmental Chemical Analysis. A Practical Guide,
Royal Society of Chemistry, Cambridge.
B.7 Introduction to Isotope Dilution Inductively Coupled Plasma Mass Spectrometry
This practical exercise makes use of an istopically enriched cadmium standard which is available from a
number of sources. However, any element with an enriched isotope can be used in place of cadmium,
provided that the natural abundance is known.
B.7.1 Objectives
Light-up, ion lens tuning, mass calibration, optimization of data acquisition parameters, determination
of Cd in water by isotope dilution
B.7.2 Instrumentation and Reagents.
1 Enriched cadmium isotopic standard (Spectrascan Stable Isotope Solution, Teknolab A/S, P.O. Box
131, N-1441 Drobak, Norway).
2 Polypropylene bottles.
3 Pipettes.
4 Mass calibration tuning solution.
5 Torch, spray chamber and cones.
