建立了室内灰尘样品中8种常见多溴联苯醚(PBDEs:BDE-28、BDE-47、BDE-99、BDE-100、BDE-153、BDE-154、BDE-183和BDE-209)的气相色谱-负化学电离源质谱(GC-NCI/MS)分析方法.样品经吸尘器采集、正己烷超声萃取、浓缩后,采用GC-NCI/MS测定.结果表明,方法的加标回收率为53.2% ~107.6%,日内测定的相对标准偏差(RSD)为2.8%~16.5%,日间测定的RSD为6.4%~22.6%.除了BDE-209的检出限(信噪比为3)为0.15ng/g外,其他多溴联苯醚的检出限为0.003~0.015 ng/g.该方法灵敏度高,准确度和精密度好,简便快速,溶剂消耗量少,适用于灰尘中三溴~十溴联苯醚的测定.
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