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Inductively Coupled Plasma-Atomic Emission Spectrometry: Analysis of Biological Materials and Soils for Major, Trace, and Ultra-trace Elements

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An inductively coupled plasma sustained in flowing argon and a permanently aligned all-glass coaxial pneumatic nebulizer are employed in the atomic emission mode with a direct-reading polychromator for simultaneous multielement determinations. The inductively coupled plasma is shown to be remarkably free from matrix and interelement effects by application for the determination of major (Na, K, P, Ca, and Mg) and trace (Fe, Cu, Zn, Mn, Pb, Cd, Co, Cr, Ni, V, Ti, Al, Sr, and Ba) elements in reference biologic materials and soil extracts. Wet-digestion and several dryashing sample preparation procedures are evaluated. Accuracy, precision, and sensitivity compare favorably with other multielement instrumental techniques (neutron activation analysis) energy dispersive x-ray fluorescence, solution-rotating disk atomic emission spectrometry) and with flame atomic absorption spectrometry. The directness of the method reported here is illustrated by use of one set of system operating conditions with one set of synthetic reference solutions used to establish a single calibration curve for each element.

Keywords: Biologic tissues; Emission spectrometry; Inductively coupled plasma; Multielement analysis; Serum; Soil; Standard reference materials

Document Type: Research Article


Affiliations: 1: Hasler Research Center, Applied Research Laboratories, 95 La Patera Lane, Goleta, California 93017; present address: 170 Harvard Lane, Santa Barbara, CA 93111 2: Hasler Research Center, Applied Research Laboratories, 95 La Patera Lane, Goleta, California 93017

Publication date: January 1, 1978

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