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首页> 美国卫生研究院文献>Springer Open Choice >Novel concepts for preparation of reference materials as whole water samples for priority substances at nanogram-per-liter level using model suspended particulate matter and humic acids
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Novel concepts for preparation of reference materials as whole water samples for priority substances at nanogram-per-liter level using model suspended particulate matter and humic acids

机译：使用模型悬浮颗粒物和腐殖酸将参考物质作为优先物质的整体水样制备为纳升/升水平的新概念

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One of the unresolved issues of the European Water Framework Directive is the unavailability of realistic water reference materials for the organic priority pollutants at low nanogram-per-liter concentrations. In the present study, three different types of ready-to-use water test materials were developed for polycyclic aromatic hydrocarbons (PAHs), polybrominated diphenyl ethers (PBDEs) and tributyltin (TBT) at nanogram-per-liter levels. The first type simulated the dissolved phase in the water and comprised of a solution of humic acids (HA) at 5 mg L−1 dissolved organic carbon (DOC) and a spike of the target compounds. The second type of water sample incorporated the particulate phase in water. To this end, model suspended particulate matter (SPM) with a realistic particle size was produced by jet milling soil and sediments containing known amounts of PAHs, PBDEs and TBT and added as slurry to mineral water. The most complex test materials mimicked “whole water” consequently containing both phases, the model SPM and the HA solution with the target analytes strongly bound to the SPM. In this paper, the development of concepts, processing of the starting materials, characterisation of the HA and model SPMs as well as results for homogeneity and stability testing of the ready-to-use test materials are described in detail.>Graphical AbstractVials containing 0.5 g of model SPM, black caps for TBT, silver caps for PAH and red caps for PBDEs, respectively.
机译：欧洲水框架指令未解决的问题之一是无法获得用于每升低纳克浓度有机优先级污染物的实际水参考材料。在本研究中，开发了三种不同类型的即用型水测试材料，用于纳升/升水平的多环芳烃（PAH），多溴联苯醚（PBDEs）和三丁基锡（TBT）。第一类模拟在水中的溶解相，由5 mg L -1 溶解有机碳（DOC）的腐殖酸（HA）溶液和目标化合物的峰值组成。第二种类型的水样品将颗粒相掺入水中。为此，通过喷射研磨含有已知量的PAHs，PBDEs和TBT的土壤和沉积物，并以浆液形式添加到矿泉水中，可以生产出具有真实粒度的模型悬浮颗粒物（SPM）。因此，最复杂的测试材料模拟了“全水”，因此同时包含两个阶段，即模型SPM和HA溶液，目标分析物与SPM牢固结合。本文详细介绍了概念的发展，原材料的处理，HA和模型SPM的表征以及现成测试材料的均质性和稳定性测试的结果。 ft0-> <！-fig @ position =“ anchor” mode = article f4-> <！-fig mode =“ anchored” f5-> >图形摘要<！-fig / graphic | fig / alternatives / graphic mode =“ anchored” m1-> <！-标题a7->分别装有0.5 g SPM模型的小瓶，用于TBT的黑盖，用于PAH的银盖和用于PBDE的红盖。

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