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2008•Chinese Journal of Analysis LaboratoryRequires access

In situ preconcentration and determination of trace cadmium in seawater with a new chelating resin

Dongmei Wu

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Abstract

A new chelating resin(XAD-H2Dz) was used for on-line minicolumn field sampling(MFS) technique.Trace cadmium in seawater samples was preconcentrated in site and determined by flow injection-flame atomic absorption spectrometry(FI-FAAS).The detection limits(3σ) were 68 and 6.7 ng/L,respectively,and relative standard deviations(n=7) were 2.0% and 2.6%,respectively for sampling volumes of 5 mL and 50 mL.The method was successfully applied to the determination of cadmium in the certified reference materials(GBW(E)080040) and in seawater samples from the dalian laohutan and Lian Yungang,and the results are satisfactory.

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What this paper is about

A new chelating resin(XAD-H2Dz) was used for on-line minicolumn field sampling(MFS) technique.Trace cadmium in seawater samples was preconcentrated in site and determined by flow injection-flame atomic absorption spectrometry(FI-FAAS).The detection limits(3σ) were 68 and 6.7 ng/L,respectively,and relative standard deviations(n=7) were 2.0% and 2.6%,respectively for sampling volumes of 5 mL and 50 mL.The method was successfully applied to the determination of cadmium in the certified reference materials(GBW(E)080040) and in seawater samples from the dalian laohutan and Lian Yungang,and the results are satisfactory.

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Available abstract

A new chelating resin(XAD-H2Dz) was used for on-line minicolumn field sampling(MFS) technique.Trace cadmium in seawater samples was preconcentrated in site and determined by flow injection-flame atomic absorption spectrometry(FI-FAAS).The detection limits(3σ) were 68 and 6.7 ng/L,respectively,and relative standard deviations(n=7) were 2.0% and 2.6%,respectively for sampling volumes of 5 mL and 50 mL.The method was successfully applied to the determination of cadmium in the certified reference materials(GBW(E)080040) and in seawater samples from the dalian laohutan and Lian Yungang,and the results are satisfactory.

Key concepts: Chemistry, Seawater, Cadmium, Chelating resin, Certified reference materials, Detection limit, Atomic absorption spectroscopy, Trace Amounts

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In situ preconcentration and determination of trace cadmium in seawater with a new chelating resin — Research Paper | ScholarLens