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National Research Council Canada nass 7
Nass 7, supplied by National Research Council Canada, used in various techniques. Bioz Stars score: 93/100, based on 151 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/nass+7/Seawater+certified+reference+material+for+trace+metals+and+other+constituents/pm41980390-118-21-29
Average 93 stars, based on 151 article reviews
nass 7 - by Bioz Stars, 2026-10
93/100 stars

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Article Title: Determination of picomolar to sub-nanomolar trace metals in seawater using an alternative chelating resin
Article Snippet: Certified seawater reference materials CASS-6 and NASS-7 (National Research Council, Canada) were used to validate the preconcentration method, and certified values for the target trace metals are available online (https://nrc.canada.ca/en/certifications-evaluations-standards/ certified-reference-materials).

Article Title: Simple Automation and Volume Reduction of Voltammetric Measurements for Marine Trace Metal Speciation
Article Snippet: Depending on the investigated sample set, we use NASS-7, CASS-6 or SLRS-6 (National Research Council Canada) for open ocean, coastal ocean and riverine samples. respectively.

Article Title: From hatchling to adult: multi-stressor effects of zinc toxicity and salinity in a benthic marine annelid.
Article Snippet: Coastal ecosystems are increasingly affected by the combined pressures of climate change and anthropogenic pollution, exposing marine organisms to multiple interacting stressors.. Shifts in temperature and precipitation are altering the physicochemical balance of coastal waters, including salinity changes that can modulate metal toxicity.. Understanding how these factors interact under environmentally realistic conditions is essential for assessing organismal vulnerability in changing environments.

Article Title: Spatial distributions of iron and manganese in surface waters of the Arctic's Laptev and East Siberian seas
Article Snippet: Certified reference materials for trace metals, NASS-7 and CASS-6 (National Research Council of Canada), were used to validate the preconcentration procedures.

Article Title: A versatile solid-phase extraction method using InertSep ME-2 for simultaneous analysis of covering medium to heavy mass trace elements in diverse water matrices.
Article Snippet: Accuracy was verified by analyzing two certified reference materials (CRMs): NASS-7 (estuarine water, NRC Canada) and NMIJ 7204-a (seawater, NMIJ Japan).

Article Title: Depth profiles of dissolved and particulate lead indicate reversible scavenging in deep waters of the West Subtropical Pacific
Article Snippet: Method accuracy was further validated using two seawater reference materials: NASS-7 (National Research Council Canada) and GSC (GEOTRACES intercalibration sample).

Biomarker Discovery:

Article Title: Coupling metal concentrations and drift simulations for tracing emissions from offshore wind farms.
Article Snippet: Optima grade glacial acetic acid and optima grade ammonia solution (w = 20–22 %) (Fisher Scientific, Schwerte, Germany) were used without further purification to produce 4 mol L− 1 ammonium acetate buffer adjusted to pH 6.0 ± 0.2. .. The reference waters CASS-6 and NASS-7 (National Research Council Canada) were routinely measured for method validation. .. External calibration standard solutions for quantification (all traceable to NIST standards) were prepared from custom-made multi-element standards of different composition (Inorganic Ventures, Christiansburg, USA).

Control:

Article Title: Ecotoxicological effects of deep-sea sediments from polymetallic nodule fields in the marine mussel Mytilus galloprovincialis.
Article Snippet: To enhance sensitivity, an Apex 2Q desolvating nebulizer (Elemental Scientific Inc.) was used before sample introduction into the ICPMS/MS. .. Concentrations were quantified by external standard calibration and for analytical quality control, we used the certified reference materials (CRMs) SLRS-6 and NASS-7 (river water and seawater, respectively; both from National Research Council of Canada), along with a GEOTRACES inter-calibration sample (BATS 2000 m) with community consensus values for Rare Earth Elements (REE; [58]). ..



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