Comparison of sampling devices for trace metal determinations in seawater

摘要: Abstract The results of an intercomparison three types sampling device and hydrowire, used for the collection seawater samples trace metal analysis, are presented. These devices were intercompared in international experiment involving member states Intergovernmental Oceanographic Commission through mid-depth North Atlantic water at Panulirus Station near Bermuda. Of commercially available devices, modified GO-FLO samplers appear to yield lowest concentration with Niskin having only slightly inferior capability. Both unmodified Hydro-Bios have similar, but generally poorer, abilities uncontaminated samples. hydrowires intercompared, plastic-coated steel yields most metals. Kevlar stainless-steel cause slight contamination some Overall, impression is obtained that differences between levels metals ocean reported by different laboratories predominantly due analytical, rather than errors or artifacts.