Determination of trace metals in high-salinity petroleum produced formation water by inductively coupled plasma mass spectrometry following on-line analyte separation/preconcentration

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DOIResolve DOI: http://doi.org/10.1039/c0ja00108b
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TypeArticle
Journal titleJournal of Analytical Atomic Spectrometry
ISSN0267-9477
Volume26
Issue3
Pages578585; # of pages: 8
Subject8-Hydroxyquinoline; Analytes; Certified reference materials; Coastal seawater; Complex compositions; Concentration ranges; Desirability function; Doehlert matrix; Flow injection; Formation water; High salinity; Iminodiacetate; Isotope dilutions; Limits of detection; Matrix separation; Method validations; Off shore platforms; Pre-concentration; Response surface; Standard addition; Trace metal; Drilling platforms; Electromagnetic induction; Inductively coupled plasma; Isotopes; Manganese; Offshore structures; Resins; Seawater; Silica; Spectrometry; Trace analysis; Trace elements; Vanadium; Zinc; Inductively coupled plasma mass spectrometry
AbstractA procedure is detailed for the determination of trace metals in high salinity petroleum produced formation water (PFW) by inductively coupled plasma mass spectrometry (ICP-MS) coupled with flow injection (FI) on-line matrix separation and preconcentration. High salinity PFW waters present complex composition containing various organic and inorganic substances. Mini-columns packed with Toyopearl AF-Chelate-650M iminodiacetate resin were used for the analyte separation/preconcentration of Cd, Pb, Ni, Zn, V, Co and U; Toyopearl 8-hydroxiquinoline resin for Fe, and silica immobilized 8-hydroxyquinoline resin for Mo. A Doehlert matrix and desirability function was used to generate response surfaces to optimize the column separation/preconcentration parameters. Using 7.5 mL aliquots of PFW, method limits of detection of 0.0007, 0.009, 0.017, 0.024, 0.0002, 0.047, 0.058, 0.002, 0.013 and 0.041 ng ml -1 were obtained for Cd, Pb, Ni, Zn, U, Mo, Fe, Co, V and Mn, respectively. Vanadium, Co and Mn were determined by the method of standard additions whereas Cd, Pb, Ni, Zn, Mo, Fe and U were quantitated using isotope dilution. CASS-4 (coastal seawater) certified reference material was used for method validation and high-salinity PFW (39-120‰) from Brazilian offshore platforms examined. The concentration ranges found in these waters were 0.013-1.47, 0.057-0.80, 0.229-5.1, 0.096-3360, 0.001-0.081, 0.244-69, 0.84-1419, 0.004-3.5, 0.088-0.85 and 4.2-6230 ng ml -1 for Cd, Pb, Ni, Zn, U, Mo, Fe, Co, V and Mn, respectively. © 2011 The Royal Society of Chemistry.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for National Measurement Standards
Peer reviewedYes
NPARC number21271142
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Record identifier45588ac8-ab26-4379-83ef-1873f2a2ff17
Record created2014-03-24
Record modified2016-05-09
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