Inductively coupled plasma mass multiple-collector

Multiple-collector inductively coupled plasma mass spectrometry (MC-ICPMS) combines sector-field ICPMS with a multiple collector detector system and has recently emerged as an alternative to TIMS for precise U-Th isotope measurement. The full potential of MC-ICPMS has yet to be realized. Yet despite this, its performance in high precision isotope measurement already challenges and, in some cases, surpasses that ever achieved by TIMS (e.g., Lee and Halliday 1995 Blichert-Toft and Albarede 1997). 

Taylor PDF, De Bievre P, Walder AJ, Entwistle A (1995) Vahdation of the analytical linearity and mass discrimination correction model exhibited by a Multiple Collector Inductively Coupled Plasma Mass Spectrometer by means of a set of synthetic uranium isotope mixtures. J Anal At Spectrom 10 395-398... 

Gussone N, Eisenhauer A, Heuser A, Dietzel M, Bock B, Bohm E, Spero H, Lea D, Buma J, Nagler, TF (2003) Model for kinetic effects on calcium isotope fractionation (6 Ca) in inorganic aragonite and cultured planktonic foraminifera. Geochim Cosmochim Acta 67 1375-1382 Halicz L, Galy A, Belshaw NS, O Nions RK (1999) High precision measurement of calcium isotopes in carbonates and related materials by multiple collector inductively coupled plasma mass spectrometry (MC-ICP-MS). J Anal Atom Spectr 14 1835-1838... 

Rouxel O, Ludden J, Carginan J, Marin L, Fouquet Y (2002) Natural variations of Se isotopic composition determined by hydride generation multiple collector inductively coupled plasma mass spectrometry. Geochim Cosmochim Acta 66(18) 3191-3199... 

In the environment, Mo isotope research began in earnest with the application of multiple-collector inductively coupled plasma mass spectrometry. While much work remains to be done, this early research points to promising applications in paleoceanography, and beyond. 

U-XRF spectrometry synchrotron-based micro-x-ray absorption near-edge stmcture spectroscopy multiple collector inductively coupled plasma mass spectrometry... 

Multiple-Collector Inductively Coupled Plasma Mass Spectrometry... 

Figure 1 Outline of the multiple-collector inductively coupled plasma mass spectrometer (VG Elemental Plasma 54) at the University of Michigan (U-M). The U-M instrument is equipped with an extra 30-cm energy filter for high-abundance sensitivity measurements. (From Halliday et al., 1998b.)...

Table 1 Comparison of Isotopic Compositions Measured by Multiple-Collector Inductively Coupled Plasma Mass Spectrometry and Those Measured by Thermal Ionization Mass Spectrometry... 

Hirata, T. (1996) Lead isotopic analyses of NIST standard reference materials using multiple collector inductively coupled plasma mass spectrometry with a modified external correction method for mass discrimination effect. Analyst 121, 1407-1411. 

Several isotopes (see Isotopes Isotope Labeling) of Cd are known, and 8 are stable (Table 3). For " Cd and " Cd, the nnclear spin is 1/2 and they are used for NMR studies of Cd compounds and in biological fields (see Cadmium Organometallic Chemistry). " Cd is used in the nuclear industry because of its high neutron cross section. Unstable isotopes are prepared from nuclear reactions. Cd stable isotope composition in geological and meteorite samples has been investigated using multiple collector inductively coupled plasma mass spectrometry. ... 

Walder, A.J. (1997) Advanced isotope ratio mass spectrometry 11 isotope ratio measurement by multiple collector inductively coupled plasma mass spectrometers, in Modem Isotope Ratio Mass Spectrometry, 1st edn. (ed. I.T. Platzner), John Wiley Sons, Ltd., Chichester, pp. 11-82. 

Given the importance of isotopic analysis to cosmochemical research, it is unsurprising that improvements in mass spectrometric methods and instrumentation have played a significant role in advancing the scientific field. The advent of multiple-collector (MC) inductively coupled plasma mass spectrometry (ICP-MS) in the early 1990s [10-13] is no exception in this regard. The success of this instrumental technique, which is now routinely used in well over 100 laboratories world-wide, has had an enormous effect on cosmochemistry, with many studies published over the last two decades that showcase novel methods and applications. 

Walder, A.J. and Furuta, N. (1993) High-predsion lead isotope ratio measurement by inductively coupled plasma multiple collector mass spectrometry. Anal. Sci., 9, 675-680. Walder, A.J., Platzner, 1., and Freedman, P.A. (1993) Isotope ratio measurement of lead, neodymium and neodymium-samarium mixtures, hafnium and hafnium-lutetium mixtures with a double focusing multiple collector inductively coupled plasma mass spectrometer. J. Anal. At. Spectrom., 8, 19-23. 

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