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用于食品和水样中痕量铜（II）选择性富集的多孔有机聚合物。

Porous organic polymers for selective enrichment of trace Cu(ii) in food and water samples.

作者信息

Haseen Uzma, Kapoor Sakshi, Khan Rais Ahmad, Koo Bon Heun

机构信息

Department of Chemistry, Aligarh Muslim University Aligarh 202001 India

Nanoscale Research Facility, Indian Institute of Technology Delhi Hauz Khas New Delhi 110016 India.

出版信息

RSC Adv. 2025 Mar 21;15(11):8729-8739. doi: 10.1039/d4ra08024f. eCollection 2025 Mar 17.

DOI:10.1039/d4ra08024f
PMID:40124915
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11926794/
Abstract

Porous organic polymers (POPs) were synthesized by polymerization of benzene triamine and trimesoyl chloride. The POP material is water-stable and shows selective extraction of Cu(ii) due to its intrinsic nitrogen-rich surface, which forms a chelate with Cu(ii) ions. The prepared polymeric material was characterized through Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, energy-dispersive X-ray elemental mapping, and scanning electron microscopy for surface group analysis and structural morphology studies. A microcolumn was developed using POPs for the preconcentration of trace Cu(ii) from complex real samples. The proposed method shows a high enrichment factor of 900 and a quantification limit of 1.1 ppb for Cu(ii) ions. The accuracy of the developed method was confirmed by analyzing standard reference materials (NIES 8 and NIES 10c) and the standard addition method. The method shows good precision with an RSD value of less than 5%.

摘要

通过苯三胺和均苯三甲酰氯聚合反应合成了多孔有机聚合物（POPs）。该POP材料具有水稳定性，由于其富含氮的固有表面能与Cu(ii)离子形成螯合物，因而对Cu(ii)具有选择性萃取能力。通过傅里叶变换红外光谱、X射线光电子能谱、能量色散X射线元素映射和扫描电子显微镜对制备的聚合物材料进行表征，以分析表面基团和研究结构形态。利用POPs开发了一种微柱，用于从复杂的实际样品中预富集痕量Cu(ii)。所提出的方法对Cu(ii)离子显示出900的高富集因子和1.1 ppb的定量限。通过分析标准参考物质（NIES 8和NIES 10c）和标准加入法验证了所开发方法的准确性。该方法具有良好的精密度，相对标准偏差（RSD）值小于5%。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77f3/11926794/f2bba15f6bc8/d4ra08024f-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77f3/11926794/78639b4db37f/d4ra08024f-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77f3/11926794/4806ba475c91/d4ra08024f-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77f3/11926794/f4bfd3bbccac/d4ra08024f-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77f3/11926794/5d4e6cf1cf8c/d4ra08024f-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77f3/11926794/f2bba15f6bc8/d4ra08024f-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77f3/11926794/78639b4db37f/d4ra08024f-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77f3/11926794/4806ba475c91/d4ra08024f-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77f3/11926794/f4bfd3bbccac/d4ra08024f-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77f3/11926794/5d4e6cf1cf8c/d4ra08024f-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77f3/11926794/f2bba15f6bc8/d4ra08024f-f5.jpg

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