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Equilibrium Passive Sampling of POP in Lipid-Rich and Lean Fish Tissue: Quality Control Using Performance Reference Compounds
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2017-09-13 00:00:00 , DOI: 10.1021/acs.est.7b03113 Tatsiana P. Rusina 1 , Pernilla Carlsson 1, 2 , Branislav Vrana 1 , Foppe Smedes 1
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2017-09-13 00:00:00 , DOI: 10.1021/acs.est.7b03113 Tatsiana P. Rusina 1 , Pernilla Carlsson 1, 2 , Branislav Vrana 1 , Foppe Smedes 1
Affiliation
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Passive sampling is widely used to measure levels of contaminants in various environmental matrices, including fish tissue. Equilibrium passive sampling (EPS) of persistent organic pollutants (POP) in fish tissue has been hitherto limited to application in lipid-rich tissue. We tested several exposure methods to extend EPS applicability to lean tissue. Thin-film polydimethylsiloxane (PDMS) passive samplers were exposed statically to intact fillet and fish homogenate and dynamically by rolling with cut fillet cubes. The release of performance reference compounds (PRC) dosed to passive samplers prior to exposure was used to monitor the exchange process. The sampler–tissue exchange was isotropic, and PRC were shown to be good indicators of sampler−tissue equilibration status. The dynamic exposures demonstrated equilibrium attainment in less than 2 days for all three tested fish species, including lean fish containing 1% lipid. Lipid-based concentrations derived from EPS were in good agreement with lipid-normalized concentrations obtained using conventional solvent extraction. The developed in-tissue EPS method is robust and has potential for application in chemical monitoring of biota and bioaccumulation studies.
中文翻译：
脂质丰富和瘦鱼组织中POP的平衡被动采样：使用性能参考化合物进行质量控制
被动采样被广泛用于测量各种环境矩阵（包括鱼组织）中的污染物水平。迄今为止，鱼类组织中持久性有机污染物（POP）的平衡被动采样（EPS）一直仅限于富含脂质的组织中的应用。我们测试了几种暴露方法，以将EPS的适用性扩展到瘦组织上。薄膜聚二甲基硅氧烷（PDMS）被动采样器静态暴露在完整的鱼片和鱼肉匀浆中，并通过切块鱼片立方体滚动而动态地暴露。暴露前将定量参考化合物（PRC）释放到被动采样器中用于监测交换过程。采样器与组织的交换是各向同性的，并且PRC被证明是采样器与组织平衡状态的良好指示。动态暴露表明，所有三种受试鱼，包括脂含量为1％的瘦鱼，均在不到2天的时间内达到了平衡。源自EPS的脂质浓度与使用常规溶剂萃取获得的脂质标准化浓度高度吻合。发达的组织内EPS方法功能强大，具有在生物群化学监测和生物富集研究中应用的潜力。
更新日期：2017-09-13
中文翻译：
脂质丰富和瘦鱼组织中POP的平衡被动采样：使用性能参考化合物进行质量控制
被动采样被广泛用于测量各种环境矩阵（包括鱼组织）中的污染物水平。迄今为止，鱼类组织中持久性有机污染物（POP）的平衡被动采样（EPS）一直仅限于富含脂质的组织中的应用。我们测试了几种暴露方法，以将EPS的适用性扩展到瘦组织上。薄膜聚二甲基硅氧烷（PDMS）被动采样器静态暴露在完整的鱼片和鱼肉匀浆中，并通过切块鱼片立方体滚动而动态地暴露。暴露前将定量参考化合物（PRC）释放到被动采样器中用于监测交换过程。采样器与组织的交换是各向同性的，并且PRC被证明是采样器与组织平衡状态的良好指示。动态暴露表明，所有三种受试鱼，包括脂含量为1％的瘦鱼，均在不到2天的时间内达到了平衡。源自EPS的脂质浓度与使用常规溶剂萃取获得的脂质标准化浓度高度吻合。发达的组织内EPS方法功能强大，具有在生物群化学监测和生物富集研究中应用的潜力。
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