title: Interlaboratory comparison of measurements of acid-volatile sulfide and simultaneously extracted nickel in spiked sediments.
abstract: An interlaboratory comparison of acid-volatile sulfide (AVS) and simultaneously extracted nickel (SEM_Ni) measurements of sediments was conducted among five independent laboratories. Relative standard deviations for the seven test samples ranged from 5.6 to 71% (mean = 25%) for AVS and from 5.5 to 15% (mean = 10%) for SEM_Ni. These results are in stark contrast to a recently published study that indicated AVS and SEM analyses were highly variable among laboratories.
authors: US Geological Survey, Columbia Environmental Research Center, Columbia, Missouri, USA. bbrumbaugh@usgs.gov
authors: William G
authors: WG
authors: Brumbaugh
authors: Chad R
authors: CR
authors: Hammerschmidt
authors: Luciana
authors: L
authors: Zanella
authors: Emily
authors: E
authors: Rogevich
authors: Gregory
authors: G
authors: Salata
authors: Radoslaw
authors: R
authors: Bolek
mesh_terms: D004784:Environmental Monitoring / Q000379:methods; D019015:Geologic Sediments / Q000737:chemistry*; D007753:Laboratories; D009532:Nickel / Q000032:analysis*; D013440:Sulfides / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D013440:Sulfides; D014874:Water Pollutants, Chemical; D009532:Nickel