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International Journal of Environmental Analytical Chemistry Volume 60, 1995 - Issue 2-4
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Original Articles

Application of Ultrasound to Dissolution of Environmental Samples for Elemental Analysis

S. Mamba Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada, T6G 2G2
&
B. Kratochvil Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada, T6G 2G2
Pages 295-302 | Received 03 Aug 1994, Published online: 04 Oct 2006
 
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Abstract

The use of ultrasonic energy to bring biological matrices into solution was studied. Sonication of aqueous suspensions of biological samples in 1% H2O2/0.5 M H2.SO4 mixtures with a commercial 20-kHz probe yielded complete dissolution for a range of materials within 40 min. The physical and chemical processes occurring during sonication were investigated. Analysis of NIST SRM's oyster tissue and pine needles for Cd, Sr, Cu, Zn and Mn by ICP-OES showed good agreement between experimental and certified values. Advantages of the method include shortened dissolution times and lower reagent requirements.

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Related Research Data

Determination of mineral and trace element concentrations in pine needles by ICP-OES: evaluation of different sample pre-treatment methods
Source: Informa UK Limited

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