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首页> 外文期刊>RSC Advances >Nano-hydroxyapatite/polyaniline composite as an efficient sorbent for sensitive determination of the polycyclic aromatic hydrocarbons in air by a needle trap device
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Nano-hydroxyapatite/polyaniline composite as an efficient sorbent for sensitive determination of the polycyclic aromatic hydrocarbons in air by a needle trap device

机译：纳米羟基磷灰石/聚苯胺复合材料作为针阱装置敏感测定空气中的多环芳烃的敏感剂

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Hydroxyapatite is a readily available, inexpensive, environmentally friendly adsorbent with high adsorption capacity. In this study, a polyaniline-doped nano-hydroxyapatite (PANI@HA) adsorbent was synthesized and employed in a needle trap device for the extraction of polycyclic aromatic hydrocarbons such as naphthalene, fluoranthene, benzo[ a ]anthracene, phenanthrene, and benzo[ a ]pyrene for the first time. The synthesized adsorbent was characterized by X-ray diffraction, field emission scanning electron microscopy, and Fourier-transform infrared spectroscopy analysis. Initially, effective variables such as the carryover effect, storage time, accuracy, and precision of the method were examined in the laboratory. The desorption conditions were optimized using the response surface methodology and central composite design methods. From the standpoint of quantitative parameters, the limit of detection and limit of quantitation were determined to be between 0.001 and 0.003 and 0.021 and 0.051 ng mL ~(?1) , respectively, which indicates the high sensitivity of the proposed method. Additionally, no significant changes were detected after storage of analytes inside the needle at 4 °C after 60 days. The results of this study also provide a high correlation between the results of sampling with needles containing PANI@HA and with XAD-2 adsorbent tubes (standard NIOSH 5115 method) ( R ~(2) = 0.98). Finally, the proposed method was successfully employed in the extraction and determination of polycyclic aromatic hydrocarbons in field (real) samples. In general, it can be concluded that a needle packed with PANI@HA is a reliable and high-performance method for sampling polycyclic aromatic hydrocarbons compared to the NIOSH method.
机译：羟基磷灰石是一种高吸附容量的容易获得的，廉价，环保的吸附剂。在该研究中，合成聚偶掺氮纳米羟基磷灰石（Pani @ HA）吸附剂，并在针阱装置中用于提取多环芳烃如萘，氟蒽，苯并[A]蒽，菲和苯并[ a]芘第一次。通过X射线衍射，场发射扫描电子显微镜和傅里叶变换红外光谱分析，表征合成吸附剂。最初，在实验室中检查了诸如方法的携带效果，储存时间，精度和精度之类的有效变量。使用响应面方法和中央复合设计方法进行优化解吸条件。从定量参数的观点来看，分别测定检测极限和定量极限分别为0.001至0.003和0.021×0.051 ng mL〜（α1），这表明该方法的高灵敏度。此外，在60天后在4℃下储存针内的分析物后没有检测到显着的变化。本研究的结果还提供了用含有Pani @ Ha和XAD-2吸附管的针头采样的结果之间的高相关（标准Niosh 5115方法）（R〜（2）= 0.98）。最后，在田间（真实）样品中的多环芳烃中成功地使用该方法。通常，可以得出结论，用PANI @ HA包装的针是对与Niosh方法相比采样多环芳烃的可靠和高性能的方法。

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