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Featured researches published by R. M. Barnes.


Fresenius Journal of Analytical Chemistry | 1987

Radial intensity distribution of atom and ion lines in an argon ICP

Nada D. Kovacic; R. M. Barnes

ZusammenfassungDie gemessene radiale Intensitätsverteilung der Atom- und Ionenlinien von 4 Elementen (Be, Mg, Zn, Li) mit lonisierungsenergien von 5 bis 9 eV wurden mit theoretisch berechneten Verteilungen verglichen, die auf einem eindimensionalen Modell beruhen. Im Radiusbereich von 1 bis 3 mm entsprach das Modell den Messungen zufriedenstellend.SummaryThe measured radial intensity distribution of atom and ion lines of four elements (Be, Mg, Zn and Li) with ionization energies varying from 5–9 eV are compared with theoretically calculated radial intensity distributions of analyte based on a one-dimensional model. The model simulated the distributions satisfactorily when the radius ranged between 1 and 3 mm.


Fresenius Journal of Analytical Chemistry | 2000

Determination of some trace elements in human tooth enamel.

Eva Reitznerová; Dula Amarasiriwardena; Marta Kopčáková; R. M. Barnes


Fresenius Journal of Analytical Chemistry | 1998

Comparison of microwave-assisted acid leaching techniques for the determination of heavy metals in sediments, soils, and sludges

D. Florian; R. M. Barnes; G. Knapp


Fresenius Journal of Analytical Chemistry | 1996

Application of tertiary amines for arsenic and selenium signal enhancement and polyatomic interference reduction in ICP-MS analysis of biological samples

Antoaneta Krushevska; Mihály Kotrebai; Alexandra Lásztity; R. M. Barnes; Dulasiri Amarasiriwardena


Fresenius Journal of Analytical Chemistry | 1998

Determination of lead concentration and lead isotope ratios in calcium supplements by inductively coupled plasma mass spectrometry after high pressure, high temperature digestion

Dula Amarasiriwardena; Kamal Sharma; R. M. Barnes


Fresenius Journal of Analytical Chemistry | 1998

Estimation of detection limits in inductively coupled plasma mass spectrometry

Evgeniy D. Prudnikov; R. M. Barnes


Fresenius Journal of Analytical Chemistry | 1998

Dissolution of Al-Fe materials and analysis by inductively coupled plasma – atomic emission spectrometry

Assad S. Al-Ammar; R. M. Barnes


Fresenius Journal of Analytical Chemistry | 1998

Commercial standards were used to prepare the calibration standards for minor and trace elements (Spex Industries Plasma

Assad S. Al-Ammar; R. M. Barnes


1998 Winter Conference on Plasma Spectrochemistry | 1998

Total iodine in nutritional and biological reference materials using neutron activation analysis and inductively coupled plasma mass spectrometry

Y. Gelinas; G. Venkatesh Iyengar; R. M. Barnes


Archive | 1987

Radiale Intensit?tsverteilung von Atom- und Ionenlinicn in einem Argon-ICP

Nada D. Kovacic; R. M. Barnes

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Assad S. Al-Ammar

University of Massachusetts Amherst

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Nada D. Kovacic

University of Massachusetts Amherst

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Alexandra Lásztity

University of Massachusetts Amherst

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Antoaneta Krushevska

University of Massachusetts Amherst

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Eva Reitznerová

University of Massachusetts Amherst

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Kamal Sharma

University of Massachusetts Amherst

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Mihály Kotrebai

University of Massachusetts Amherst

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