Precision of a splitting device for water samples
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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.
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Precision of a splitting device for water samples |
| Series title | Open-File Report |
| Series number | 95-293 |
| DOI | 10.3133/ofr95293 |
| Year Published | 1995 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Sacramento, CA |
| Contributing office(s) | Minnesota Water Science Center |
| Description | iv, 6 p. |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |