Abstract
An off-line solvent extraction procedure with inductively coupled plasma mass spectrometric (ICP-MS) determination was developed for the determination of heavy metals in sea-water at ultra-trace levels. The procedure was adapted from a dithiocarbamate–diisobutyl ketone solvent extraction system with Hg back-extraction, which was previously validated using electrothermal atomic absorption spectrometry. The simultaneous ICP-MS determination significantly reduced the analysis times and improved the detection limits (Cd 0.2, Co 0.3, Cu 3, Fe 21, Ni 2, Pb 0.5 and Zn 2 ppt). The rapid single extraction procedure was quantitative and external standards were used for ICP-MS calibration. The method gave good reproducibility with precisions at the 100 ppt level better than 5% (n=4), except for Fe (7%). The method was validated by accurate analysis of CASS-3 Nearshore Sea-water and NASS-4 Open Ocean Sea-water Standard Reference Materials.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
