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An analysis method was developed for determining free and bound fractions of polybrominated ethers (PBDEs) and tetrabromobisphenol A (TBBPA) in sediments. The free PBDE and TBBPA were extracted with acetone/hexane (1:1, V/V) mixed solvent, and the bound fraction was released from the sediment by saponification at 80 °C. The PBDEs and TBBPA were separated by adjusting pH; PBDEs were determined by GC-NCI-MS...
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