![]() Exposure matrices relying mostly on the Zatka speciation method to estimate the main forms of nickel need to be re-evaluated to account for any possible misattributions of risk. Request permissions What contribution do detergent fatty alcohols make to sewage discharges and the marine environment S. In contrast, the releases of nickel from nickel carbonate, nickel subsulfide, and nickel metal powders in pure water are consistent with their releases in synthetic lung fluid, indicating that deionized water is a better leaching solution to estimate the biologically relevant ‘water-soluble’ nickel fraction of workplace exposures. However, when sparingly water-soluble compounds like nickel carbonates or water-insoluble substances like nickel subsulfide and fine metallic nickel powders are present, the first step of the Zatka method can greatly over estimate the amount of nickel that could be released in pure water. The present results demonstrate that for nickel sulfate or chloride, the current Zatka solution is adequate to assess the ‘water-soluble’ fraction. Simultaneous determination of PPCPs, EDCs, and artificial sweeteners in environmental water samples using a single-step SPE coupled with HPLC-MS/MS and isotope dilution. Trace elements in recent groundwater of an artesian flow system and comparison with snow: enrichments. DOI: 10.1039/A807854H (Paper) Reference Section for: J. Article CAS Google Scholar Tran NH, Hu J, Ong SL. This preliminary study looked at the efficiency of the first step of the Zatka leaching method for accurately assessing the ‘water-soluble' fraction of several substances present in nickel production operations, compared to leaching in synthetic lung fluid. From the journal: Journal of Environmental Monitoring. Misjudgments in the relative proportion of each of the main fractions of nickel in workplace exposures could translate into possible misattributions of risk to the various forms of nickel. Exposure matrices based on leaching methods have been used to ascertain which chemical forms of nickel are primarily associated with adverse respiratory effects after inhalation. Chemical speciation of workplace nickel exposures is critical because nickel-containing substances often differ in toxicological properties.
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