https://www.selleckchem.com/pr....oducts/SB-203580.htm
Statistical protocols for the estimation of geochemical background were applied to an existing database of till geochemistry (N = 149 after removing samples from mining impacted areas. Results suggested geochemical background for the region is 0.25-15 mg kg-1 As, comparable to global averages, with upper thresholds elevated in volcanic units (30 mg kg-1 As) that often host sulfide mineralization in greenstone belts in the region.Humic-like substances (HULIS) in PM2.5 emitted from biomass burning (B, including maize cob, wheat stra
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