Multielement Determination of Trace Metals in Seawater by ICP-MS Using a Chelating Resin-Packed Minicolumn for Preconcentration
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- Zhu Yanbei
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University
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- Itoh Akihide
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University
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- Haraguchi Hiroki
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University
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Abstract
A chelating resin-packed minicolumn was developed to pretreat seawater samples for the determination of trace metals by inductively coupled plasma mass spectrometry (ICP-MS). The preconcentration conditions, such as the flow rate of sample loading, pH for adsorption, amount of ammonium acetate for eliminating matrix elements, and the amount of nitric acid for eluting trace metals from the resin, were investigated and optimized. Firstly, 50 mL of seawater samples was adjusted to pH 6.0 and loaded into the column at the flow rate of 3 mL min−1. Secondly, 8 mL of 1 M ammonium acetate and 5 mL of pure water were passed through the column for eliminating matrix elements, such as Mg and Ca. Finally, trace metals were eluted with 2.25 mL of 2 M nitric acid, and then 0.25 mL of internal standard elements (Ge, In, Re, Tl, 100 μg L−1 each) was added to the eluted solution in order to correct matrix effects in the ICP-MS measurements. The recoveries for 23 elements (Mn, Co, Ni, Cu, Zn, Y, Cd, all-REEs, Pb, and U) were more than 80%. The analytical results for the concentrations of trace metals in seawater reference material (NASS-5) agreed well with certified or reference values. The present method was also applied to the multielement analysis of the coastal seawater samples from the Take Island (Gamagoori, Aichi prefecture, Japan) and the Ise Bay (Nagoya, Aichi prefecture, Japan).
Journal
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- Bulletin of the Chemical Society of Japan
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Bulletin of the Chemical Society of Japan 78 (1), 107-115, 2005
The Chemical Society of Japan
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Details 詳細情報について
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- CRID
- 1390282679105976832
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- NII Article ID
- 130004151793
- 10014271857
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- NII Book ID
- AA00580132
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- ISSN
- 13480634
- 00092673
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- NDL BIB ID
- 7212072
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed