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Precision of a splitting device for water samples

Paul D. Capel·Fernando C. Nacionales·Steven J. Larson
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Abstract

Two identical cone splitters, devices designed to split water and its suspended solids into equal aliquots for semi-volatile organic chemical and trace element analyses, were evaluated for their precision. The water-splitting evaluations consisted of experiments to test the effect of water volume, the effect of combining outlet ports, and the effect of different techniques of water introduction. The solids-splitting evaluations consisted of experi- ments to test the effect of particle size (nine different particle diameters ranging from very coarse sand to clay) and suspended-solids concentration. In general, water was equally split with a precision of less than 5 percent relative standard deviation. The accuracy of splitting the solids was a function of particle size. Clay, silt, and fine and medium sand were split with a precision relative standard deviation of less than 7 percent, and coarse sand was split with a relative standard deviation between 12 and 45 percent.

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BibTeXRIS

Paul D. Capel, Fernando C. Nacionales, Steven J. Larson. 1995. Precision of a splitting device for water samples. https://doi.org/10.3133/ofr95293

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