Quality assessment program and results for the NAWQA surface water pilot studies

Abstract

This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards and stratigraphic nomenclature. Any use of trade names is for descriptive purposes only and does not imply endorsement by the USGS.

GEOCHEMICAL CHARACTERIZATION OF STREAMBED SEDIMENT IN THE UPPER ILLINOIS RWER BASIN1

“…Full details of the chemical-decomposition and analytical methods are published in Arbogast (1990). Quality assurance for the analyses was addressed by use of split samples randomized within each ICP-AES job (Sanzolone and Ryder, 1989), use of standard reference materials, and use of split samples in the nested analysis of variance. 2Percentage of data at randomly selected high-and low-order stream sites greater than the detection limit.…”

Surface-water-quality assessment of the Yakima River basin in Washington: Analysis of major and minor elements in fine-grained streambed sediment, 1987

“…Analytical methods and method-reporting levels for each element are shown in table 9, at the back of the report. Analytical methods and quality-assurance practices have been described by Arbogast (1990) and Sanzolone and Ryder (1989) and have been summarized together with method reporting levels in table 9 (at back of report).…”

Surface-water-quality assessment of the Yakima River Basin in Washington; spatial and temporal distribution of trace elements in water, sediment, and aquatic biota, 1987-91

“…The decomposition used for boron and inorganic carbon are partial techniques. Quality assurance was addressed by including standard reference materials, random sample splits, and analytical sample splits (Sanzolone and Ryder, 1989;Fuhrer, McKenzie, and others, 1994, appendix A). Protocols used for sample handling procedures, sample preparation, analytical methods, instrument use, and laboratory procedures and quality control are described in Arbogast (1990).…”