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KMID : 0385520080210050364
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Analytical Science & Technology
2008 Volume.21 No. 5 p.364 ~ p.374
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Measurement of heavy metals in antarctic soil at the king sejong station: application of isotope dilution inductively coupled plasma mass spectrometry
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Suh Jung-Ki
Hwang Eui-Jin
Min Hyung-Sik
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Abstract
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‘Antarctic Environmental Monitoring Handbook’ was published by COMNAP/SCAR in 2000. The standardized method described in this handbook is recommended for monitoring of antarctic environment. High pressure bomb technique in this guide was used to decompose soil samples. In compliance with this guide book, high pressure bomb technique was applied to decompose the antarctic soil sampled at the King Sejong Station. An Isotope Dilution-Inductively Coupled Plasma-Mass Spectrometry (ID-ICP-MS) was applied to determine mass concentrations of Pb, Cu and Zn in the soil. The accuracy in this method was verified by the analysis of certified reference materials (CRM) of NIST 2702 (marine sediment). The analytical results agreed with certified value within the range from 99.5~100.8%. Matrix separation was necessitated for the determination of Cu and Zn by Chelex 100 ion exchange resin. As a result, the average mass concentrations of Pb , Cu and Zn which are suspected to be caused by anthropogenic pollution were 332.9 mg/kg, 95.6 mg/ kg and 115.3 mg/kg, respectively. Those for the metals sampled in the soils of the remote regions from the station were 28.1 mg/kg, 101.8 mg/kg and 115.6 mg/kg, respectively.
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KEYWORD
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antarctic soil, environmental monitoring, King Sejong Station, ID-ICP/MS, NIST SRM 2702, heavy metals
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