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Determination of lead and cadmium in sediment slurries by ETA-AAS: A comparison of methods for the preparation and analysis of sediment slurries

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Abstract

Comparisons were made of various methods for the homogenization of sediment slurries for the determination of Pb and Cd by ETA-AAS. Homogenization techniques evaluated included the use of impact bead, propeller and foamless generators, vortexing and ultrasonic homogenization. On the basis of precision and accuracy, speed and ease of operation; the ultrasonic homogenization technique was clearly the method of choice. Precision obtained for this method using both reduced PdCl2 modifier and the L'vov platform approaches what is obtained for aqueous solutions. Accuracy for Pb and Cd was excellent using both slurry and aqueous calibration standards with slurry standards being somewhat superior for Cd.

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Authors and Affiliations

  1. Department of Chemistry, University of Southern Colorado, 81001, Pueblo, Colorado, USA

    Loretta Sandoval, Juan-Carlos Herraez, Gregg Steadman & Kent I. Mahan

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  1. Loretta Sandoval
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  2. Juan-Carlos Herraez
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  3. Gregg Steadman
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  4. Kent I. Mahan
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Sandoval, L., Herraez, JC., Steadman, G. et al. Determination of lead and cadmium in sediment slurries by ETA-AAS: A comparison of methods for the preparation and analysis of sediment slurries. Mikrochim Acta 108, 19–27 (1992). https://doi.org/10.1007/BF01240368

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  • DOI: https://doi.org/10.1007/BF01240368

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