Analytical Method for the Determination of Trace Toxic Elements in Milk Based on Combining Fe<sub>3</sub>O<sub>4</sub> Nanoparticles Accelerated UV Fenton-like Digestion and Solid Phase Extraction

Xi, Ai; Wu, Li; Zhang, Mengni; Hou, Xiandeng; Yang, Lu; Zheng, Chengbin

doi:10.1021/jf501638k

Cited by 25 publications

(12 citation statements)

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“…Additionally, the improper surface ligands coating would lead to the failure control of drug release [ 102 ]. In recent, diverse methods have been employed for metal oxide nanozymes preparation, including the hydrothermal [ 103 , 104 ], solvothermal [ 105 , 106 ], pulsed laser ablation [ 107 ], co-precipitation [ 108 , 109 ], sol–gel [ 110 ], and thermal decomposition method [ 111 ].…”

Section: Preparing Diverse Nanozymes With Constructive Featurementioning

confidence: 99%

A Review on Metal- and Metal Oxide-Based Nanozymes: Properties, Mechanisms, and Applications

et al. 2021

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Since the ferromagnetic (Fe3O4) nanoparticles were firstly reported to exert enzyme-like activity in 2007, extensive research progress in nanozymes has been made with deep investigation of diverse nanozymes and rapid development of related nanotechnologies. As promising alternatives for natural enzymes, nanozymes have broadened the way toward clinical medicine, food safety, environmental monitoring, and chemical production. The past decade has witnessed the rapid development of metal- and metal oxide-based nanozymes owing to their remarkable physicochemical properties in parallel with low cost, high stability, and easy storage. It is widely known that the deep study of catalytic activities and mechanism sheds significant influence on the applications of nanozymes. This review digs into the characteristics and intrinsic properties of metal- and metal oxide-based nanozymes, especially emphasizing their catalytic mechanism and recent applications in biological analysis, relieving inflammation, antibacterial, and cancer therapy. We also conclude the present challenges and provide insights into the future research of nanozymes constituted of metal and metal oxide nanomaterials.

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Section: Preparing Diverse Nanozymes With Constructive Featurementioning

confidence: 99%

A Review on Metal- and Metal Oxide-Based Nanozymes: Properties, Mechanisms, and Applications

et al. 2021

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“…Moreover, it is anticipated that the use of this technique will broaden the scope of elements detectable by miniature and low power consumption PD-OES systems because many elements and their compounds can be preconcentrated and separated from the sample matrix by HS-SPME after derivatization to their volatile species by various techniques, including hydride generation, cold vapor generation, chloride generation, alkylation, etc. Recently, several simple sample digestion methods 48 were developed for suitable digestion of samples without using microwave assistance or a standard hot plate, which undoubtedly benefits real-time field analysis and point-of-care testing of elements using the proposed method.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Headspace Solid-Phase Microextraction Coupled to Miniaturized Microplasma Optical Emission Spectrometry for Detection of Mercury and Lead

Zheng

Hou

et al. 2018

Anal. Chem.

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Despite increased interest in microplasma atomic spectrometry over the past several years, its applications to field analysis of real samples still remain limited due to its low sensitivity. In this work, headspace solid-phase microextraction (HS-SPME) using PDMS/DVB fiber was used as a sample introduction method to improve the sensitivity of a miniature (6.0 cm length × 5.0 cm width × 2.8 cm height) low power (<10 W) microplasma point discharge optical emission spectrometer (PD-OES) for the determination of Hg and Pb after their derivatization with sodium tetraethylborate (NaBEt). Owing to its advantages of combining sampling, separation, and preconcentration of analytes from sample matrices into a single step, HS-SPME not only simplifies sample pretreatment and the experimental setup but also eliminates interferences from matrices and water vapor while significantly improving analytical performance. In comparison to photochemical vapor generation PD-OES, limits of detection for Hg and Pb were enhanced by at least 100-fold, providing great potential for field analysis of these and other trace elements in real samples. Under optimal conditions, the limits of detection for Hg and Pb were 0.001 and 0.003 μg L, respectively, with relative standard deviations (RSDs) better than 2.1% and 4.5% at a concentration of 1 μg L. The accuracy of the HS-SPME-PD-OES system was validated by analysis of three Certified Reference Materials, including DORM-4 (Hg, 412 ± 36 μg kg; Pb, 404 ± 62 μg kg), TORT-3 (Hg, 292 ± 22 μg kg; Pb, 225 ± 18 μg kg) and SRM1568b (Hg, 5.53 ± 0.58 μg kg), providing analytical results in excellent agreement with certified values at the 95% confidence level. This method was also successfully used for the analysis of several real rice and water samples with satisfactory results (90-130% recoveries of added spikes).

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“…× 12 mm o.d., reaction vessels) was used to accelerate the digestion procedure, and the entire device was wrapped in tin foil to reflect ultraviolet radiation and insulate thermal emission. 9 An inductively coupled plasma mass spectrometer (ICP-MS, iCAP Q, Thermo Fisher Scientific Inc., Germany) was used for the determination of Cd in rice samples pretreated by MWD for the comparison of analytical results. The measurements of the total organic carbon (TOC) were conducted with an Analytik Jena Multi N/C 2100.…”

Section: Methodsmentioning

confidence: 99%

“…[2][3][4][5] However, its applications in sample pretreatment for spectral analysis are still comparatively limited. We have been particularly interested in developing new digestion methods with Fenton reaction based on the following reasons: (1) Fenton reaction can be used for the degradation of many kinds of organic substances, which is expected to achieve the digestion of complex samples; (2) Fenton reaction integrating the advantages of non-selective oxidation, relatively mild reaction conditions, high efficiency and low pollution and cost 6,7 is conducive to the development of simple and green pretreatment methods; (3) recently, Fenton reaction has been proved to be an effective digestion procedure of milk 8,9 and fish 10 samples prior to atomic spectrometric detection, showing a huge potential in sample digestion for spectral analysis.…”

Section: Introductionmentioning

confidence: 99%

UV-assisted Fenton digestion of rice for the determination of trace cadmium by hydride generation atomic fluorescence spectrometry

et al. 2016

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A new digestion method using UV-assisted Fe(0) Fenton reaction was developed for the determination of trace Cd in rice by hydride generation atomic fluorescence spectrometry. The proposed method integrated the advantages of simplicity, small dose of reagents, low cost and moderate reaction conditions, and was successfully utilized to analyze a Certified Reference Material (CRM) and real rice samples. A 1 mL mixture of the sample and reagents (0.0500 g rice powder, 0.2% (m/v) Fe(0), 0.75% (v/v) HNO3 and 18% (v/v) H2O2) was irradiated by UV-light for 50 min and then a clear solution was obtained by separating excess Fe(0) with a magnet prior to spectral analysis. The limit of detection (LOD) for Cd was found to be 0.02 mg kg(-1) and the relative standard deviation was better than 5.0% at a concentration level of 0.40 mg kg(-1). The recovery obtained by analyzing the CRM was 103% and spiked recoveries with 0.40 mg kg(-1) Cd in rice samples were 93% and 101%. The t-test proved that there is no significant difference between the certified value and the determined value of the CRM, and between the proposed method and microwave-assisted digestion coupled with inductively coupled plasma mass spectrometry (MWD-ICP-MS) at 95% confidence level.

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Analytical Method for the Determination of Trace Toxic Elements in Milk Based on Combining Fe₃O₄ Nanoparticles Accelerated UV Fenton-like Digestion and Solid Phase Extraction

Cited by 25 publications

References 44 publications

A Review on Metal- and Metal Oxide-Based Nanozymes: Properties, Mechanisms, and Applications

A Review on Metal- and Metal Oxide-Based Nanozymes: Properties, Mechanisms, and Applications

Headspace Solid-Phase Microextraction Coupled to Miniaturized Microplasma Optical Emission Spectrometry for Detection of Mercury and Lead

UV-assisted Fenton digestion of rice for the determination of trace cadmium by hydride generation atomic fluorescence spectrometry

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Analytical Method for the Determination of Trace Toxic Elements in Milk Based on Combining Fe3O4 Nanoparticles Accelerated UV Fenton-like Digestion and Solid Phase Extraction

Cited by 25 publications

References 44 publications

A Review on Metal- and Metal Oxide-Based Nanozymes: Properties, Mechanisms, and Applications

A Review on Metal- and Metal Oxide-Based Nanozymes: Properties, Mechanisms, and Applications

Headspace Solid-Phase Microextraction Coupled to Miniaturized Microplasma Optical Emission Spectrometry for Detection of Mercury and Lead

UV-assisted Fenton digestion of rice for the determination of trace cadmium by hydride generation atomic fluorescence spectrometry

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Analytical Method for the Determination of Trace Toxic Elements in Milk Based on Combining Fe₃O₄ Nanoparticles Accelerated UV Fenton-like Digestion and Solid Phase Extraction