Simultaneous enrichment and determination of cadmium and mercury ions using magnetic PAMAM dendrimers as the adsorbents for magnetic solid phase extraction coupled with high performance liquid chromatography

Yuan, Yali; Wu, Yiping; Wang, Hongyuan; Tong, Yayan; Sheng, Xueying; Sun, Yong; Zhou, Xianqi; Zhou, Qingxiang

doi:10.1016/j.jhazmat.2019.121658

Cited by 97 publications

(20 citation statements)

References 57 publications

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“…These results reveal that POSS-Se is an efficient adsorbent for the removal of Hg 2+ ions from the aqueous solutions and can also be recycled. sodium diethyldithiocarbamate (DDTC-Na) as the chelating reagent [58], the Hg 2+ ions can be easily removed from POSS-Se within 30 min. Thus, the adsorption-desorption process was repeated 10 times by using 5 mL of suspension in water containing Hg 2+ ions (1000 ppm) and POSS-Se (1 mg mL −1 ) for 30 min as the standard experiment.…”

Section: Adsorption Of Hg 2+ Ions By Poss-sementioning

confidence: 99%

A Selenone-Functionalized Polyhedral Oligomeric Silsesquioxane for Selective Detection and Adsorption of Hg2+ ions in Aqueous Solutions

et al. 2019

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Developing novel functional polyhedral oligomeric silsesquioxane (POSS) for various applications is highly desirable. Herein we present the first example of a novel selenone-functionalized POSS (POSS-Se) by treating an imidazolium-containing POSS with selenium powder under mild condition. The structure of POSS-Se was characterized by FT-IR, 1 H NMR, 13 C NMR, 29 Si NMR, and elemental analysis. Acid treatment of POSS-Se results in a hydrophilic red-orange colored solid, which is highly sensitive and selective for the detection of Hg 2+ ions in aqueous solutions by visually observing the color change to pale yellow, and to white. Interestingly, POSS-Se has no activity on this detection. This finding is due to the Se-Se formation by acid-treatment and subsequent coordination-induced cleavage upon the addition of Hg 2+ ions. The detection behavior can be precisely monitored by a "turn-on" fluorescence phenomenon with the limit of detection (LOD) of 8.48 ppb, comparable to or higher than many reported Hg 2+ sensors. Moreover, POSS-Se demonstrates a selective and efficient adsorption of Hg 2+ ions with a maximum capacity of 952 mg g -1 . The value is higher than most reported adsorbents for Hg 2+ ions, typically thiol and/or thioether functional materials, indicating its promise as an efficient adsorbent for the selective removal of Hg 2+ ions from industrial wastewater. This work may open up new horizons for the exploration of selenium-containing functional POSS.

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Section: Adsorption Of Hg 2+ Ions By Poss-sementioning

confidence: 99%

A Selenone-Functionalized Polyhedral Oligomeric Silsesquioxane for Selective Detection and Adsorption of Hg2+ ions in Aqueous Solutions

et al. 2019

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“…Many methods have been reported for the determination of mercury such as high chromatography-inductively coupled plasma mass spectrometry (HPLC/ICP-MS) [13,14], gas chromatography-mass spectrometry (GC/MS) [2,15], graphite furnace atomic adsorption spectrometry (GF-AAS) [5,16,17], cold vapor atomic absorption spectrometry (CV-AAS) [3,9,18,19], cold vapor atomic fluorescence spectrometry (CV-AFS) [4,20,21], chemical vapor generation atomic emission spectrometry (CVG-AES) [22], UV-Vis spectrophotometric [23,24], and anodic stripping voltammetry (ASV) [25][26][27][28][29][30][31][32][33][34][35][36]. Compared to the ASV methods, the HPLC-MS and GC-MS methods require complex sample preparations and the use of toxic organic solvents (e.g., methanol and acetonitrile), and the analytical is also more complex.…”

Section: Introductionmentioning

confidence: 99%

Determination of Total Mercury in Solid Samples by Anodic Stripping Voltammetry

Nguyen

Luu

et al. 2021

Journal of Chemistry

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The anodic stripping voltammetry (ASV) was investigated to determine total mercury in solid samples using a gold electrode. The mercury was deposited on the gold electrode in a preconcentration step. The oxidation peak of mercury was irreversible. The optimal conditions of the procedure were found to be as follows: 0.05 mol L−1 HCl solution, deposition potential −0.5 V vs. Ag/AgCl/KCls, deposition time 40 s, and sweep rate 0.04 V s−1. Under the optimal conditions, the peak current showed a linear dependence on Hg2+ concentration in the range from 0.01 to 0.1 mg l−1. The detection limit and quantification limit were 4.28 µg L−1 and 12.98 µg L−1, respectively. The mean recovery and relative standard deviation were 91.2% and 2.4% (n = 9). The procedure was successfully applied for determining total mercury in samples collected from Hanoi light bulb warehouse—The Rang Dong Light Source and Vacuum Flask JSC. The results were compared with cold vapor atomic absorption spectrometry (CV-AAS).

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“…Recently, there has been a growing interest in magnetic solid phase extraction (MSPE) due to its favorable properties including the small dosage of the adsorbent, simplicity, easy separation, and saving time ( Gong et al, 2017 ; Li et al, 2014 ). As a reliable method, MSPE has been successfully used to preconcentrate environmental pollutants such as phthalate esters, polycyclic aromatic hydrocarbons, lignin, and heavy metal ions ( Wu et al, 2017 ; Zhou et al, 2017 ; Wu et al, 2019 ; Yuan et al, 2020 ). MSPE is based on magnetic or magnetizable sorbents such as iron, cobalt, nickel, and their oxides.…”

Section: Introductionmentioning

confidence: 99%

“…Amongst the dendrimers, PAMAM dendrimer is a significant class of dendrimers ( Hayati et al, 2017 ). Our group has modified Fe 3 O 4 with PAMAM dendrimer and developed sensitive determination methods for cadium and mercury, phthalate esters, and typical phenols from water, and the developed method provided exceptionable sensitivity and other merits such as simplicity, easy operation, and low cost ( Wu et al, 2019 ; Wu et al, 2020 ; Yuan et al, 2020 ; Zhou et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Preparation of Polyamidoamine Dendrimer Modified Magnetic Nanoparticles and Its Application for Reliable Measurement of Sudan Red Contaminants in Natural Waters at Parts-Per-Billion Levels

Bai

Zhou

et al. 2021

Front. Chem.

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The health threat from Sudan red dyes has been the subject of much attention in recent years and is crucial to design and establish reliable measurement technologies. In the present study, a new magnetic nanomaterial, polyamidoamine dendrimer-modified magnetic nanoparticles (Gn-MNPs), was synthesized and characterized. The nanomaterials had good adsorption capacity for Sudan dyes from natural waters. G1.5-MNPs possessed excellent adsorption capacity and a linear adsorption relationship over the range from 0.02 to 300 μg L−1 of Sudan dyes with relative coefficients all larger than 0.996. The sensitivity of the proposed method was excellent with detection limits over the range from 1.8 to 5.5 ng L−1 and the precision was less than 3.0%. G1.5-MNPs showed a remarkable application potential for the enrichment of trace environment pollutants in aqueous samples and the developed method based on this nanomaterial could be a robust and reliable alternative tool for routine monitoring of such pollutants.

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Simultaneous enrichment and determination of cadmium and mercury ions using magnetic PAMAM dendrimers as the adsorbents for magnetic solid phase extraction coupled with high performance liquid chromatography

Cited by 97 publications

References 57 publications

A Selenone-Functionalized Polyhedral Oligomeric Silsesquioxane for Selective Detection and Adsorption of Hg2+ ions in Aqueous Solutions

A Selenone-Functionalized Polyhedral Oligomeric Silsesquioxane for Selective Detection and Adsorption of Hg2+ ions in Aqueous Solutions

Determination of Total Mercury in Solid Samples by Anodic Stripping Voltammetry

Preparation of Polyamidoamine Dendrimer Modified Magnetic Nanoparticles and Its Application for Reliable Measurement of Sudan Red Contaminants in Natural Waters at Parts-Per-Billion Levels

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