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Total Elements (Includes Phosphorus, Sulfur, Potassium, Calcium, Magnesium, Sodium, Boron, Zinc, Manganese, Iron, Copper And Molybdenum)

Water Totals: P, K, S, Ca, Mg, Na, B, Zn, Mn, Fe, Cu, Al, Cd, Cr, Pb, Mo, Ni


This method quantitatively determines the concentration of P, S, Ca, Mg, K, Na, B, Zn, Mn, Fe, Cu, Mo and a variety of other elements utilizing a nitric acid/hydrogen peroxide microwave digestion and determination by atomic absorption spectrometry (AAS) and Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES). The methodology utilizes a pressure digestion/dissolution of the sample and is incomplete relative to the total oxidation of organic carbon. K, Na, Zn, Cu, Mn, and Fe are analyzed by AAS and all others are analyzed by ICP-AES with vacuum spectrometer. The method has detection limits ranging from 0.1 mg/Kg to 0.01%. The method is generally reproducible within 8% for all analytes.

Sah, R. N. and Miller, R. O. 1992. Spontaneous reaction for acid dissolution of biological tissues in closed vessels. Anal. Chem. 64:230-233.

Meyer, G. A. and Keliher, P. N. 1992. An overview of analysis by inductively coupled plasma-atomic emission spectrometry. p. 473-516. In: A. Montaser and D.W. Golightly (ed.) Inductively coupled plasmas in analytical atomic spectrometry. VCH Publishers Inc. New York, NY.