HR: 1340h
AN: V43B-1571    [Abstracts]
TI: Determination and Standardization of Analytical Conditions for Dissolved Boron in Coastal Waters of East Sea in Korea by ICP-OES
AU: Yoon, H
EM: dunee@kbsi.re.kr
AF: Korea Basic Science Institute, Hazardous Substance Research Team, 126-16, 5St., Anam-dong Sungbuk-ku, Seoul, 136-701 Korea, Republic of
AU: * Shin, M
EM: popo482@kbsi.re.kr
AF: Korea Basic Science Institute, Hazardous Substance Research Team, 126-16, 5St., Anam-dong Sungbuk-ku, Seoul, 136-701 Korea, Republic of
AU: Yoon, C
EM: chyoon@kbsi.re.kr
AF: Korea Basic Science Institute, Hazardous Substance Research Team, 126-16, 5St., Anam-dong Sungbuk-ku, Seoul, 136-701 Korea, Republic of
AU: Lee, J
EM: jclee@kigam.re.kr
AF: Korea Institute of Geoscience & Mineral Resources, Minerals and Materials Processing Division , 39, Gajeong-dong, Yusung-ku, Daejeon, 305-350 Korea, Republic of
AB: The analysis of metals in seawaters has been an important subject for many years. Achieving low-level detection limits as well as overcoming high matrix effect are requested in seawater analysis especially elements of interest are present in various chemical forms. Among them, boron is one of the widely distributed elements in nature and its concentrations of about 10 ppm in the Earth's crust and about 4.5 ppm in the seawater as borates. In seawater boron concentration exhibit a linear relationship to the amount of chloride ion present. Boron had been considered as one of the valuable elements to recover from seawaters for commercial use. Currently, we launched research team for the production of valuable metals from seawaters in Korea that can be used commercially. Several metals including boron were already under serious studies. In this study we aim to prepare standardized operational procedures in analysis of boron during pilot study for boron recovery as pilot recovery process. Inductively coupled plasma Optical Emission Spectrometry (ICP-OES) method is preferred for the analysis of the low levels of boron found in environmental samples such as seawater. In order to develop test method for the determination of dissolved Boron from East Sea Seawater in Korea, all soluble boron present in seawater has been tested and accuracy of measurement was checked from the sampling step. The result of analysis of boron in seawaters presents many difficult problems, ionization of from the alkali and alkaline earth metals. And the problems also exist in handling nebulizer and injector tubes in high saline solutions. The scope of this study was to determine boron which can contain up to 35psu dissolved salt. The work also included comparing various analytical methods for better accurate results in several solution conditions. Dilution, standard addition, matrix matching calibration methods was thoroughly tested differently and detailed operating conditions for using auxiliary gases were also presented.
DE: 0452 Instruments and techniques
DE: 0594 Instruments and techniques
DE: 1000 GEOCHEMISTRY
DE: 1065 Major and trace element geochemistry
SC: Volcanology, Geochemistry, Petrology [V]
MN: Fall Meeting 2005