Determination of boron in water samples at nanograms per cubic decimeter levels by reversed-phase partition high-performance liquid chromatography with precolumn complexation reaction using salicylaldehyde and 1-amino-8-naphthol-3,6-disulfonate |
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Authors: | Toru Takahashi Satoshi Yawata Hitoshi Hoshino |
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Institution: | (1) Division of Environmentally Benign Systems, Graduate School of Environmental Studies, Tohoku University, 20 Aoba, Aramaki, Aoba-ku, Sendai 980–8579, Japan |
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Abstract: | A new method for the highly sensitive and selective determination of boron at nanograms per cubic decimeter levels has been
developed based on the derivatization reaction of boron using salicylaldehyde and 1-amino-8-naphtol-3,6-disulfonate with reversed-phase
partition high-performance liquid chromatography. A detection limit as low as 2.0 nmol/dm3 (22 ng/dm3) was achieved without any preconcentration. No significant interference was observed in the determination of 16 μmol/dm3 of boron with the addition of nine metal ions (AlIII, CuII, CoII, FeII, FeIII, NiII, MnII, VV, ZnII) at concentrations 100 times greater than that of boron without any masking procedure. The proposed method was successfully
applied to the determination of boron in river water, tap water, doubly distilled water, and highly purified water.
Figure Scheme of formation of boron-azomethine-H complex with salicylaldehyde and 1-amino-8-naphthol-3, 6-disulfonate |
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Keywords: | Boron Nanograms per cubic decimeter Salicylaldehyde 1-Amino-8-naphthol-3 6-disulfonate High-performance liquid chromatography |
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