固相萃取
孔雀绿
傅里叶变换红外光谱
纳米点
检出限
分析化学(期刊)
材料科学
核化学
扫描电子显微镜
化学
标准物质
色谱法
纳米技术
吸附
化学工程
有机化学
复合材料
工程类
作者
Mustafa Soylak,Fidan Kestane,Erkan Yılmaz
标识
DOI:10.1080/10739149.2021.2007120
摘要
CdSe-carbon nanodots modified magnetic Fe3O4 nanospheres (CdSe-NDs@C-NDs@Fe3O4) were synthesized by a simple hydrothermal technique and characterized by Fourier transform-infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) with mapping, and energy dispersive X-ray spectroscopy (EDX). The prepared material was used as a magnetic solid phase microextraction (MSPE) adsorbent to determine malachite green (MG). Pasteurized cow’s milk was used as the carbon source to fabricate the carbon nanodots. The spectrophotometric determination of malachite green was performed at 625 nm. The parameters affecting the microextraction efficiency were optimized, including the pH (9.0), mass of adsorbent (5 mg), eluent type (0.1 M acetic acid in ethanol), eluent volume (0.75 mL), sample volume (10 mL), in addition to matrix studies. In order to evaluate the accuracy of the method, real samples were subjected to addition-recovery tests and the recovery values from 85% to 104% were obtained. The limits of detection (LOD) and quantitation (LOQ) of the developed method were 0.013 µg mL−1 and 0.042 µg mL−1, respectively.
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