Isotope plasma mass spectrometry

Calcium exists in the human body as Ca(II) protein-bound and free Ca (II) ions (Dilana et al. 1994). For total extracellular Ca in plasma, serum and urine a definitive isotope dilution-mass spectrometry (ID-MS) method exist. Free Ca(II) in plasma/serum can be determined with PISE, but no definitive and reference methods exist. For Ca in faeces, tissue and blood flame atomic absorption (FAAS) is used widely. [Pg.202]

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). [Pg.39]

Becker JS, Pickhardt C, Dietze H-J (2000) Laser ablation inductively coupled plasma mass spectrometry for the trace, ultratrace and isotope analysis of long-lived radionuclides in solid samples. Inti J Mass Spectrom 202 283-297... [Pg.55]

James WD, Boothe PN, Presley BJ (1998) Compton suppression garmna-spectroscopy in the analysis of radium and lead isotopes in ocean sediments. J Radioanal Nucl Chem 236 261-265 Jarvis KE, Gray AL, Houk RS (1992) Handbook of Inductively Coupled Plasma Mass Spectrometry, Blackie, Glasgow... [Pg.57]

Shen C-C, Edwards RL, Cheng H, Dorale JA, Thomas RB, Moran SB, Weinstein S, Edmonds HN (2002) Uranium and thorium isotopic and concentration measurements by magnetic sector inductively coupled plasma mass spectrometry. Chem Geol 185 165-178 Shen GT, Dunbar RB (1995) Environmental controls on uranium in reef corals. Geochim Cosmochim Acta 59 2009-2024... [Pg.404]

In isotope dilution inductively coupled plasma-mass spectrometry (ID-ICP-MS) the spike, the unspiked and a spiked sample are measured by ICP-MS in order to determine the isotope ratio. Using this technique, more precise and accurate results can be obtained than by using a calibration graph or by standard addition. This is due to elimination of various systematic errors. Isotopes behave identically in most chemical and physical processes. Signal suppression and enhancement due to the matrix in ICP-MS affects both isotopes equally. The same holds for most long-term instrumental fluctuations and drift. Accuracy and precision obtained with ID-ICP-QMS are better than with other ICP-QMS calibration... [Pg.660]

Metges, C. C. and Daenzer, M. (2000) 13C gas chromatography combustion isotope ratio mass spectrometry analysis of N pivaloyl amino acid esters of tissue and plasma samples. Analytical Biochemistry 278, 156 164. [Pg.429]

Specht and Beauchemin [506] have described an automated system to provide online addition of isotopic spikes to seawater samples in the determination of molybdenum by inductively coupled plasma mass spectrometry. [Pg.205]

Mykytiuk et al. [184] have described a stable isotope dilution sparksource mass spectrometric method for the determination of cadmium, zinc, copper, nickel, lead, uranium, and iron in seawater, and have compared results with those obtained by graphite furnace atomic absorption spectrometry and inductively coupled plasma emission spectrometry. These workers found that to achieve the required sensitivity it was necessary to preconcentrate elements in the seawater using Chelex 100 [121] followed by evaporation of the desorbed metal concentrate onto a graphite or silver electrode for isotope dilution mass spectrometry. [Pg.287]

Furuta, N. (1991). Interlaboratory comparison study on lead isotope ratios determined by inductively coupled plasma mass spectrometry. Analytical Sciences 7 823-826. [Pg.71]

R.S. Houk, Elemental and isotopic analysis by inductively coupled plasma mass spectrometry, Ace. Chem. Res., 27 (1994) 333-339. [Pg.395]

The primary and immediate need is for a trace metal reference material, but a certified reference material would provide even greater benefits. A technique based on isotope dilution with detection by inductively-coupled plasma mass spectrometry (ICP-MS) (Wu and Boyle, 1998) most clearly meets the traceability criteria required for a certified reference material. Although useful for iron and several other metals, isotope dilution is not possible for monoisotopic elements like cobalt, so other techniques must also be used. Indeed, it is advisable that several techniques be used to certify a trace metal reference material. [Pg.49]

Wu, J.F., and E.A. Boyle. 1998. Determination of iron in seawater by high-resolution isotope dilution indutively coupled plasma mass spectrometry after Mg(OH)(2) coprecipitation. Analytica Chimica Acta 367(1-3) 183-191. [Pg.125]

Dodson MH (1963) A theoretical study of the use of internal standards for precise isotopic analysis by the surface ionization technique Part I General first-order algebraic solutions. J Sci Instrum 40 289-295 Douglas DJ (1989) Some current perspectives on ICP-MS. Canad J Spectrosc 34 38-49 Douglas DJ, French JB (1986) An improved interface for inductively coupled plasma-mass spectrometry (ICP-MS). Spectrochim Acta 41B 197-204... [Pg.148]

Douglas DJ, Tanner SC (1998) Fundamental considerations in ICP-MS. In Inductively Coupled Plasma Mass Spectrometry. Montaser A (ed), Wiley-VCH, New York, p 615-679 Eugster O, Tera F, Wasserburg GJ (1969) Isotopic analyses of barium in meteorites and in terrestrial samples. J Geophys Res 74 3897-3908... [Pg.148]

Gillson GR, Douglas DJ, Fulford JE, Halligan KW, Tanner SD (1988) Nonspectroscopic interelement interferences in inductively coupled plasma mass spectrometry. Anal Chem 60 1472-1474 Gonfiantini R, Valkiers S, Taylor PDP, De Bievre P (1997) Adsorption in gas mass spectrometry. II Effects on the measurement of isotope amount ratios. Int J Mass Spectrom Ion Proc 171 231-242 Habfast K (1997) Advanced isotope ratio mass spectrometry. I magnetic isotope ratio mass spectrometers. In Modem Isotope Ratio Mass Spectrometry. Chemical Analysis Vol. 145. Platzner IT (ed). John Wiley and Sons, Chichester UK, p 11-82... [Pg.148]

Jackson SE, Gunther D (2003) The nature and sources of laser induced isotopic fractionation in laser ablation-multicollector-inductively coupled plasma-mass spectrometry. J Anal At Spectrom 18 205-212 Jiang S-J, Houk RS, Stevens MA (1988) Alleviation of overlap interferences for determination of potassium isotope ratios by Inductively-Coupled Plasma Mass Spectrometry. Anal Chem 60 1217-1220 Lam JWH, Horlick G (1990) A comparison of argon and mixed gas plasmas for inductively coupled plasma-mass spectrometry. Spectrochim Acta Part B 45 1313-1325 Langmuir I, Kingdon KH(1925) Thermionic effects caused by vapours of alkali metals. Phil Trans R Soc A107 61-79... [Pg.148]

Russel WA, Papanastassiou DA, Tomhrello TA (1978) Ca isotope fractionation on the Earth and other solar system materials. Geochim Cosmochim Acta 42 1075-1090 Sakata KI, Kawahata K (1994) Reduction of fundamental polyatomic ions in inductively coupled plasma mass spectrometry. Spectrochim Acta Atom Spectrosc PartB 49 1027-1038 Siehert, C, Nagler, TF, Kramers JD (2001) Determination of molybdenum isotope fractionation by doublespike multicollector inductively coupled plasma mass spectrometry. Geochem Geophys Geosyst 2 2000GC000124... [Pg.149]

Spivack AJ, Edmond JM (1986) Determination of horon isotope ratios hy thermal ionization mass spectrometry of the dicesium metaborate cation. Anal Chem 58 31-35 Tanner SD, Cousins LM, Douglass DJ (1994) Reduction of space charge effects using a three-aperture gas dynamic vacuum interface for inductively coupled plasma mass spectrometry. Appl Spectrosc 48 1367-1372... [Pg.149]

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