微分スペクトルクロマトグラム法による類似構造を持つ臭素系難燃剤の分析

概要

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An individual determination of the structurally analogous polybrominated flame retardants by using the derivative spectrum chromatogram method with an HPLC-diode array detector was investigated. These flame retardants have a high boiling point, and could be hardly analyzed by HPLC-MS/MS and GC-MS. Two octabromodiphenyl ethers (octa BDEs) related congeners, BDE-204 and BDE-205 showed almost the same UV-spectrum and elution behaviors in RP-HPLC. Even for such similar properties, the derivative spectrum chromatogram method allowed a selective determination of the congeners. This method was applied to the polyester resin kneaded octabromodiphenyl ether (technical) to evaluate its qualitative and quantitative properties. The ratio chromatograms of the multi derivative spectrum were effective to confirm the peak purity.