Skip to main content
U.S. flag

An official website of the United States government

Manganese recycling in the United States in 1998

December 1, 2003

This report presents the results of the U.S. Geological Survey's analytical evaluation program for six standard reference samples -- T-163 (trace constituents), M-156 (major constituents), N-67 (nutrient constituents), N-68 (nutrient constituents), P-35 (low ionic strength constituents), and Hg-31 (mercury) -- that were distributed in October 2000 to 126 laboratories enrolled in the U.S. Geological Survey sponsored interlaboratory testing program. Analytical data that were received from 122 of the laboratories were evaluated with respect to overall laboratory performance and relative laboratory performance for each analyte in the six reference samples. Results of these evaluations are presented in tabular form. Also presented are tables and graphs summarizing the analytical data provided by each laboratory for each analyte in the six standard reference samples. The most probable value for each analyte was determined using nonparametric statistics.

Publication Year 2003
Title Manganese recycling in the United States in 1998
DOI 10.3133/cir1196H
Authors Thomas S. Jones
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Circular
Series Number 1196
Index ID cir1196H
Record Source USGS Publications Warehouse