Modified Magnetic Nanocomposites with 2-Aminobenzothiazole as a Selective Adsorbent for Dispersive Magnetic Micro-solid Phase Extraction of Ultra-trace Amounts of Cadmium in Environmental and Food Samples by Thermospray Flame Furnace Atomic Absorption Spectrometry

IF 3 3区农林科学 Q2 FOOD SCIENCE & TECHNOLOGY

Food Analytical Methods Pub Date : 2025-03-24 DOI:10.1007/s12161-025-02790-2

Pâmela Caires de Oliveira, Liriana Mara Roveda, Lucimara Ramires Pereira Ruis, Paula Mantovani dos Santos, César Ricardo Teixeira Tarley, Adriana Evaristo de Carvalho, Daiane Roman, Marcela Zanetti Corazza

{"title":"Modified Magnetic Nanocomposites with 2-Aminobenzothiazole as a Selective Adsorbent for Dispersive Magnetic Micro-solid Phase Extraction of Ultra-trace Amounts of Cadmium in Environmental and Food Samples by Thermospray Flame Furnace Atomic Absorption Spectrometry","authors":"Pâmela Caires de Oliveira, Liriana Mara Roveda, Lucimara Ramires Pereira Ruis, Paula Mantovani dos Santos, César Ricardo Teixeira Tarley, Adriana Evaristo de Carvalho, Daiane Roman, Marcela Zanetti Corazza","doi":"10.1007/s12161-025-02790-2","DOIUrl":null,"url":null,"abstract":"<div>This study reports for the first time the synthesis and analytical performance of two novel magnetic nanocomposites-based silica-coated and carbon nanotubes thiol (2-aminobenzothiazole – ABT) functionalized as adsorbents for preconcentration of cadmium ions in water, cigarette and food samples by dispersive magnetic micro-solid phase extraction (DM-µ-SPE) and determination by thermospray flame furnace atomic absorption spectrometry (TS-FF-AAS). The synthesized materials were characterized by Fourier infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), nitrogen adsorption–desorption, and thermogravimetric analysis (TGA). The pH was investigated univariately while other parameters that influence the DM-µ-SPE were investigated using a two-level (24) full factorial design. As optimized conditions, pH 7.0 and 6.0; 20 mg of nanoparticles; HNO3 1.5 M as eluent and 2 min and 8 min as elution time, were found to m-SiO2-ABT and MMWCNT-ABT, respectively. The method also showed good linearity in the range of 1.0 to 10.0 µg L−1 (r2 ≥ 0.99) and of 2.0 to 20.0 µg L−1 (r2 ≥ 0.99), and low limits of detection (0.02 and 0.11 µg L−1) to m-SiO2-ABT and MMWCNT-ABT, respectively. The nanocomposites, m-SiO2-ABT and MMWCNT-ABT, can be regenerated without significant adsorption capacity loss for ten cycles, yielding recovery percentages of analytical signal of 93.04% and of 103.2%, respectively. The analysis of different water samples (tap water and mineral water), tobacco, green tea, and rice was carried out without matrix interference, yielding recovery values ranging from 88 to 104%.\n</div>","PeriodicalId":561,"journal":{"name":"Food Analytical Methods","volume":"18 6","pages":"1162 - 1179"},"PeriodicalIF":3.0000,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Food Analytical Methods","FirstCategoryId":"97","ListUrlMain":"https://link.springer.com/article/10.1007/s12161-025-02790-2","RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"FOOD SCIENCE & TECHNOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

This study reports for the first time the synthesis and analytical performance of two novel magnetic nanocomposites-based silica-coated and carbon nanotubes thiol (2-aminobenzothiazole – ABT) functionalized as adsorbents for preconcentration of cadmium ions in water, cigarette and food samples by dispersive magnetic micro-solid phase extraction (DM-µ-SPE) and determination by thermospray flame furnace atomic absorption spectrometry (TS-FF-AAS). The synthesized materials were characterized by Fourier infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), nitrogen adsorption–desorption, and thermogravimetric analysis (TGA). The pH was investigated univariately while other parameters that influence the DM-µ-SPE were investigated using a two-level (2⁴) full factorial design. As optimized conditions, pH 7.0 and 6.0; 20 mg of nanoparticles; HNO₃ 1.5 M as eluent and 2 min and 8 min as elution time, were found to m-SiO₂-ABT and MMWCNT-ABT, respectively. The method also showed good linearity in the range of 1.0 to 10.0 µg L⁻¹ (r² ≥ 0.99) and of 2.0 to 20.0 µg L⁻¹ (r² ≥ 0.99), and low limits of detection (0.02 and 0.11 µg L⁻¹) to m-SiO₂-ABT and MMWCNT-ABT, respectively. The nanocomposites, m-SiO₂-ABT and MMWCNT-ABT, can be regenerated without significant adsorption capacity loss for ten cycles, yielding recovery percentages of analytical signal of 93.04% and of 103.2%, respectively. The analysis of different water samples (tap water and mineral water), tobacco, green tea, and rice was carried out without matrix interference, yielding recovery values ranging from 88 to 104%.

查看原文本刊更多论文

以2-氨基苯并噻唑为选择性吸附剂的改性磁性纳米复合材料在热喷涂火焰炉原子吸收光谱法中分散磁微固相萃取环境和食品样品中的超微量镉

本研究首次报道了两种新型磁性纳米复合材料的合成和碳纳米管硫醇（2-氨基苯并噻唑- ABT）功能化吸附剂的合成及其分析性能，分别应用分散磁微固相萃取（DM-µ- spe）和热喷涂火焰炉原子吸收光谱法（TS-FF-AAS）对水、香烟和食品样品中的镉离子进行预富集。采用傅里叶红外光谱（FT-IR）、透射电子显微镜（TEM）、扫描电子显微镜（SEM）、x射线衍射（XRD）、氮吸附-解吸和热重分析（TGA）对合成材料进行了表征。pH是单因素研究，而其他影响DM-µ- spe的参数则采用双水平（24）全因子设计进行研究。作为优化条件，pH 7.0和6.0；纳米颗粒20毫克；HNO3为1.5 M，洗脱时间为2 min和8 min，对M - sio2 - abt和MMWCNT-ABT分别有较好的抑制作用。该方法在1.0 ~ 10.0µg L−1 （r2≥0.99）和2.0 ~ 20.0µg L−1 （r2≥0.99）范围内呈良好的线性关系，对m-SiO2-ABT和MMWCNT-ABT的检测下限分别为0.02和0.11µg L−1。纳米复合材料m-SiO2-ABT和MMWCNT-ABT可再生10次，吸附容量损失不明显，分析信号回收率分别为93.04%和103.2%。对不同水样（自来水和矿泉水）、烟草、绿茶和大米进行了无基质干扰的分析，回收率为88 ~ 104%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Food Analytical Methods 农林科学-食品科技

CiteScore

6.00

自引率

3.40%

发文量

244

审稿时长

3.1 months

期刊介绍： Food Analytical Methods publishes original articles, review articles, and notes on novel and/or state-of-the-art analytical methods or issues to be solved, as well as significant improvements or interesting applications to existing methods. These include analytical technology and methodology for food microbial contaminants, food chemistry and toxicology, food quality, food authenticity and food traceability. The journal covers fundamental and specific aspects of the development, optimization, and practical implementation in routine laboratories, and validation of food analytical methods for the monitoring of food safety and quality.