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Application of vortex-assisted solid-phase extraction for the simultaneous preconcentration of Cd(ii) and Pb(ii) by nano clinoptilolite modified with 5(p-dimethylaminobenzylidene) rhodanine
Analytical Methods ( IF 2.7 ) Pub Date : 2019-07-12 00:00:00 , DOI: 10.1039/c9ay01107b Ali Jouki 1, 2, 3, 4, 5 , Saadat Rastegarzadeh 1, 2, 3, 4, 5 , Mojgan Zendehdel 1, 2, 5, 6, 7 , Behrooz Zargar 1, 2, 3, 4, 5
Analytical Methods ( IF 2.7 ) Pub Date : 2019-07-12 00:00:00 , DOI: 10.1039/c9ay01107b Ali Jouki 1, 2, 3, 4, 5 , Saadat Rastegarzadeh 1, 2, 3, 4, 5 , Mojgan Zendehdel 1, 2, 5, 6, 7 , Behrooz Zargar 1, 2, 3, 4, 5
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Herein, a simple, fast and reliable method based on vortex-assisted solid-phase extraction (VA-SPE) followed by flame atomic absorption spectrometry was developed for the simultaneous preconcentration and trace detection of cadmium and lead. Nano-sized clinoptilolite as a natural zeolite was modified with 5(p-dimethylaminobenzylidene) rhodanine and used as an adsorbent in the VA-SPE procedure. The modification process was assisted by the preliminary formation of a nano clinoptilolite-ZnO composite. The adsorbent was characterized by various techniques including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX). Under optimized conditions, the adsorbent exhibited good sorption potential as compared to nano clinoptilolite and nano clinoptilolite–ZnO composite. The calibration curves were linear in the range of 5–100 and 20–120 ng mL−1 for Cd(II) and Pb(II), respectively. The limit of detection for Cd(II) and Pb(II) was 1.0 and 6.5 ng mL−1, respectively. This method was successfully applied to the determination of cadmium and lead in fish, rice and water samples.
中文翻译：
涡旋辅助固相萃取同时修饰5（对-二甲氨基苄叉基）若丹宁 修饰的纳米斜发沸石同时预富集Cd（ii）和Pb（ii）的应用
本文提出了一种基于涡流固相萃取（VA-SPE）火焰原子吸收光谱法同时进行镉和铅同时富集和痕量检测的简单，快速，可靠的方法。纳米斜发沸石作为天然沸石用5（p-二甲基氨基亚苄基）若丹宁，在VA-SPE程序中用作吸附剂。纳米斜发沸石-ZnO复合材料的初步形成有助于改性过程。通过多种技术对吸附剂进行了表征，包括X射线衍射（XRD），傅里叶变换红外光谱（FTIR），扫描电子显微镜（SEM）和能量色散X射线光谱（EDX）。在最佳条件下，与纳米斜发沸石和纳米斜发沸石-ZnO复合材料相比，该吸附剂具有良好的吸附潜力。对于Cd（II）和Pb（II），校准曲线分别在5-100 ng mL -1和20-120 ng mL -1范围内呈线性。Cd（II）和Pb（II）的检出限）分别为1.0和6.5 ng mL -1。该方法已成功应用于鱼，米和水样品中镉和铅的测定。
更新日期：2019-07-12
中文翻译：
涡旋辅助固相萃取同时修饰5（对-二甲氨基苄叉基）若丹宁 修饰的纳米斜发沸石同时预富集Cd（ii）和Pb（ii）的应用
本文提出了一种基于涡流固相萃取（VA-SPE）火焰原子吸收光谱法同时进行镉和铅同时富集和痕量检测的简单，快速，可靠的方法。纳米斜发沸石作为天然沸石用5（p-二甲基氨基亚苄基）若丹宁，在VA-SPE程序中用作吸附剂。纳米斜发沸石-ZnO复合材料的初步形成有助于改性过程。通过多种技术对吸附剂进行了表征，包括X射线衍射（XRD），傅里叶变换红外光谱（FTIR），扫描电子显微镜（SEM）和能量色散X射线光谱（EDX）。在最佳条件下，与纳米斜发沸石和纳米斜发沸石-ZnO复合材料相比，该吸附剂具有良好的吸附潜力。对于Cd（II）和Pb（II），校准曲线分别在5-100 ng mL -1和20-120 ng mL -1范围内呈线性。Cd（II）和Pb（II）的检出限）分别为1.0和6.5 ng mL -1。该方法已成功应用于鱼，米和水样品中镉和铅的测定。
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