Plasma ionization multicollector mass spectrometry

Pickett DA, Murrell MT, Williams RW (1994) Determination of femtogram quantities of protactinium in geologic samples by thermal ionization mass spectrometry. Anal Chem 66 1044-1049 Pietruszka AJ, Carlson RW, Hauri EH (2002) Precise and accurate measurement of Ra- °Th- U disequilibria in volcanic rocks using plasma ionization multicollector mass spectrometry. Chem Geol 188 171-191... 

Carlson RW, Hauri EH (2001) Extending the ° Pd- ° Ag chronometer to low Pd/Ag meteorites with multicollector plasma-ionization mass spectrometry. Geochim Cosmochim Acta 65 1839-1848 Clayton, RN, Onuma N, Mayeda TK (1976) Distribution of the presolar component in Allende and other carbonaceous chondrites. Earth Planet Sci Lett 30 10-18 Compston W, Oversby VM (1969) Lead isotopic analysis using a double spike. J Geophys Res 74 4338-4348 Criss RE (1999) Principles of Stable Isotope Distribution. University Press, Oxford... 

Carlson, R. W. and Hauri, E. H. (2001) Extending the 107Pd-107Ag chronometer to low Pd/Ag meteorites with multicollector plasma-ionization mass spectrometry. Geochimica et Cosmochimica Acta, 65, 1839—1848. 

The corabination of an inductively coupled plasma ion source and a magnetic sector-based mass spectrometer equipped with a multi-collector (MC) array [multicollector inductively coupled plasma mass spectrometry (MC-ICP-MS)] offers precise and reliable isotope ratio data for many solid elements. In fact, MC-ICP-MS provides data, the trueness (accuracy) and precision of which is similar to, or, in some cases, even superior to, that achieved by thermal ionization mass spectrometry (TIMS), considered the benchmark technique for isotope ratio measurements of most solid elements [1], The basic strength of ICP-MS lies in the ion source, which achieves extremely high ionization efficiency for almost all elements [2, 3]. Consequently, MC-ICP-MS is likely to become the method of choice for many geochemists, because it is a versatile, user-friendly, and efficient method for the isotopic analysis of trace elements [4-8], The ICP ion source also accepts dry sample aerosols generated by laser ablation [9-16], The combination of laser ablation (LA) with ICP-MS is now widely accepted as a sensitive analytical tool for the elemental and isotopic analysis of solid samples. 

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