title: Simultaneous analysis of silicon and boron dissolved in water by combination of electrodialytic salt removal and ion-exclusion chromatography with corona charged aerosol detection.
abstract: Selective separation and sensitive detection of dissolved silicon and boron (DSi and DB) in aqueous solution was achieved by combining an electrodialytic ion isolation device (EID) as a salt remover, an ion-exclusion chromatography (IEC) column, and a corona charged aerosol detector (CCAD) in sequence. DSi and DB were separated by IEC on the H(+)-form of a cation exchange resin column using pure water eluent. DSi and DB were detected after IEC separation by the CCAD with much greater sensitivity than by conductimetric detection. The five-channel EID, which consisted of anion and cation acceptors, cathode and anode isolators, and a sample channel, removed salt from the sample prior to the IEC-CCAD. DSi and DB were scarcely attracted to the anion accepter in the EID and passed almost quantitatively through the sample channel. Thus, the coupled EID-IEC-CCAD device can isolate DSi and DB from artificial seawater and hot spring water by efficiently removing high concentrations of Cl(-) and SO4(2-) (e.g., 98% and 80% at 0.10molL(-1) each, respectively). The detection limits at a signal-to-noise ratio of 3 were 0.52μmolL(-1) for DSi and 7.1μmolL(-1) for DB. The relative standard deviations (RSD, n=5) of peak areas were 0.12% for DSi and 4.3% for DB.
authors.affiliation: Graduate School of Engineering, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan. Electronic address: mori@gunma-u.ac.jp.
authors.forename: Masanobu
authors.initials: M
authors.lastname: Mori
authors.affiliation: Graduate School of Engineering, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan.
authors.forename: Katsuya
authors.initials: K
authors.lastname: Sagara
authors.affiliation: Graduate School of Engineering, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan.
authors.forename: Kaori
authors.initials: K
authors.lastname: Arai
authors.affiliation: Department of Environmental and Symbiotic Sciences, College of Agriculture, Food and Environmental Science, Rakuno Gakuen University, 582 Bunkyodai-Midorimachi, Ebetsu, Hokkaido 069-8501, Japan.
authors.forename: Nobutake
authors.initials: N
authors.lastname: Nakatani
authors.affiliation: Department of Chemistry, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan.
authors.forename: Shin-Ichi
authors.initials: SI
authors.lastname: Ohira
authors.affiliation: Department of Chemistry, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan.
authors.forename: Kei
authors.initials: K
authors.lastname: Toda
authors.affiliation: Graduate School of Engineering, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan.
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Itabashi
authors.affiliation: Faculty of Industrial Sciences and Technology, University Malaysia Pahang, Lebuhraya Tun Razak, 26300 Gambang Kuantan, Pahang Darul Makmur, Malaysia.
authors.forename: Daisuke
authors.initials: D
authors.lastname: Kozaki
authors.affiliation: Medical Radioisotope Application Group, Biotechnology and Medical Application Division, Quantum Beam Science Center, Japan Atomic Energy Agency, Takasaki, Gunma 370-1292, Japan.
authors.forename: Yumi
authors.initials: Y
authors.lastname: Sugo
authors.affiliation: Medical Radioisotope Application Group, Biotechnology and Medical Application Division, Quantum Beam Science Center, Japan Atomic Energy Agency, Takasaki, Gunma 370-1292, Japan.
authors.forename: Shigeki
authors.initials: S
authors.lastname: Watanabe
authors.affiliation: Medical Radioisotope Application Group, Biotechnology and Medical Application Division, Quantum Beam Science Center, Japan Atomic Energy Agency, Takasaki, Gunma 370-1292, Japan.
authors.forename: Noriko S
authors.initials: NS
authors.lastname: Ishioka
authors.affiliation: Department of Applied Chemistry, Chubu University, 1200, Matsumoto-cho, Kasugai-shi, Aichi 487-8501, Japan.
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Tanaka
mesh_terms: D000336:Aerosols / Q000737:chemistry*; D000838:Anions / Q000032:analysis; D001895:Boron / Q000032:analysis*; D002411:Cation Exchange Resins / Q000737:chemistry; D002412:Cations / Q000032:analysis; D002623:Chemistry Techniques, Analytical / Q000379:methods*; D002850:Chromatography, Gel; D012623:Seawater / Q000737:chemistry*; D059629:Signal-To-Noise Ratio; D012825:Silicon / Q000032:analysis*; D012965:Sodium Chloride / Q000737:chemistry; D014867:Water / Q000737:chemistry*
chemical_list: D000336:Aerosols; D000838:Anions; D002411:Cation Exchange Resins; D002412:Cations; D014867:Water; D012965:Sodium Chloride; D001895:Boron; D012825:Silicon
keywords: Corona charged aerosol detector; Dissolved boron; Dissolved silica; Electrodialytic ion isolation; Ion exclusion chromatography