Solvent selection for pressurized liquid extraction of polymeric sorbents used in air sampling
Solvent selection for pressurized liquid extraction of polymeric sorbents used in air sampling
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DOI：
10.1897/07-566.1
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发表时间：
2008-06-01
影响因子：
4.1
通讯作者：
Simonich, Staci Massey
中科院分区：
文献类型：
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作者：
Primbs, Toby;Genualdi, Susan;Simonich, Staci Massey
加压液体萃取 (PLE) 作为一种从空气采样介质中提取半挥发性有机化合物 (SOC) 的方法进行了评估，其中包括石英纤维过滤器 (QFF)、聚氨酯泡沫 (PUF) 和聚苯乙烯二乙烯基苯共聚物 (XAD-2)。 Hansen 溶解度参数图用于帮助选择 PLE 溶剂，以减少聚氨酯的共萃取并节省在方法开发的初始步骤中评估溶剂相容性的时间。选择 75:25% 己烷:丙酮作为 PUE 的 PLE 溶剂组合物。XAD-2 共聚物在所用的 PLE 条件下不溶解。 QFF、PUF 和 XAD-2 的 63 种 SOC（包括多环芳烃、多氯联苯以及有机氯、酰胺、三嗪、硫代氨基甲酸酯和硫代磷酸酯农药）的平均 PLE 回收率百分比（和相对标准偏差百分比）分别为 76.7 (6.2)、79.3 (8.1) 和 93.4 (2.9)%。
Pressurized liquid extraction (PLE) was evaluated as a method for extracting semivolatile organic compounds (SOCs) from air sampling media, including quartz fiber filter (QFF), polyurethane foam (PUF), and a polystyrene divinyl benzene copolymer (XAD-2). Hansen solubility parameter plots were used to aid in the PLE solvent selection in order to both reduce coextraction of polyurethane and save time in evaluating solvent compatibility during the initial steps of method development. A PLE solvent composition of 75:25% hexane:acetone was chosen for PUE The XAD-2 copolymer was not solubilized under the PLE conditions used. The average percent PLE recoveries (and percent relative standard deviations) of 63 SOCs, including polycyclic aromatic hydrocarbons, polychlorinated biphenyls, and organochlorine, amide, triazine, thiocarbamate, and phosphorothioate pesticides, were 76.7 (6.2), 79.3 (8.1), and 93.4 (2.9)% for the QFF, PUF, and XAD-2, respectively.