Open AccessRegional lake sediment geochemical data from north-central Saskatchewan (NTS 074-A, B, G, and H): reanalysis data and QA/QC evaluation
Author(s) -
Julie E. Bourdeau,
M W McCurdy,
S J A Day,
R G Garrett
Publication year - 2021
Language(s) - English
Resource type - Reports
DOI - 10.4095/329204
Subject(s) - sediment , aqua regia , environmental science , quality assurance , hydrology (agriculture) , geology , geochemistry , geomorphology , chemistry , engineering , geotechnical engineering , organic chemistry , metal , operations management , external quality assessment
This report presents the geochemical data, quality assurance and quality control (QA/QC) results of the re-analysis of lake sediment samples collected from north-central Saskatchewan (NTS 074-A, B, G and H). The original lake survey was conducted in 1986 and there-analysis in 2021. Original survey results are presented in OF1359. A total of 1,290 lake sediment samples were re-analyzed, covering an area of 17,000 km2, averaging a density of 1 sample per 13 km2. Samples were measured for 65 elements via modified aqua-regia - ICP-MS and 35 elements via INAanalysis. To ensure high quality data, the geochemical data was evaluated for contamination, accuracy, precision and fitness-for-purpose. QA/QC results have identified a number of elements to be monitored carefully for future analyses. Overall, the data are of good quality.