Solid-Phase Extraction of Phthalate Esters From Aqueous Samples Using Mesoporous Silica-Coated Multiwalled Carbon Nanotubes and Their Determination by HPLC

Deng, Xiaoying; Chen, Xiaoqing; Jiang, Xinyu

doi:10.1142/s1793292014500544

Cited by 5 publications

(1 citation statement)

References 41 publications

(33 reference statements)

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“…Based on the literature, acetonitrile is considered as an organic elute with higher elution efficiency when retaining PAEs from MWCNTs. [15] Since this developed technique was more of a qualitative detecting technique, the presence of PAEs were monitored using UV-Vis spectroscopy. Figure 6 shows the obtained UV-Vis spectra for each PAE type (DEHP, DPHP, and DnOP).…”

Section: Validation Of Resultsmentioning

confidence: 99%

MWCNT Buckypaper as Electrochemical Sensing Platform: A Rapid Detection Technology for Phthalic Acid Esters in Solutions*

et al. 2022

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Phthalic Acid Esters (PAEs) are a well-known ubiquitous environmental pollutant that holds a significant threat to human health. Despite their harmful effects, the constant use of PAEs in producing flexible plastic products has awakened society's great concern, especially with their ability to leach, migrate, or evaporate from plastics to the surrounding. Therefore, rapid and easy monitoring of the PAEs presence in different environments is crucial. This study introduces a rapid PAE detection technique that shows potential for overcoming the limitations of already existing PAE detecting methods. This novel PAE sensing platform (buckypaper) is developed using highly conducting Multi-Walled Carbon Nanotubes (MWCNT).The buckypaper adsorbs PAEs in solutions and decreases its conductivity. This conductivity decrement is detected using the Nyquist and Bode plots obtain from three-electrode Electrochemical Impedance Spectroscopy (EIS) analysis. This novel method has shown that it has the potential to distinguish DEHP (di-(2-ethylhexyl) phthalate), DPHP (di-(2-propylheptyl) phthalate), and DnOP (di-octyl phthalate) from other aromatic molecules such as toluene, xylene, naphthalene, and bisphenol-A. Moreover, the developed buckypaper is sensitive down to 1000 (v/v) ppm concentrated PAEs in methanol solutions at room temperature, which exhibits the potential of using this platform as an in-situ and real-time PAE detecting sensor.

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Section: Validation Of Resultsmentioning

confidence: 99%

MWCNT Buckypaper as Electrochemical Sensing Platform: A Rapid Detection Technology for Phthalic Acid Esters in Solutions*

et al. 2022

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Dispersive magnetic solid‐phase extraction of phthalate esters from water samples and human plasma based on a nanosorbent composed of MIL‐101(Cr) metal–organic framework and magnetite nanoparticles before their determination by GC–MS

Dargahi

Ebrahimzadeh

Asgharinezhad

et al. 2018

J of Separation Science

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In this study, a magnetic metal-organic framework was synthesized simply and utilized in the dispersive magnetic solid-phase extraction of five phthalate esters followed by their determination by gas chromatography with mass spectrometry. First, MIL-101(Cr) was prepared hydrothermally in water medium without using highly corrosive hydrofluoric acid, utilizing an autoclave oven heat supply. Afterward, Fe O nanoparticles were decorated into the matrix of MIL-101(Cr) to fabricate magnetic MIL-101 nanocomposite. The nanocomposite was characterized by various techniques. The parameters affecting dispersive magnetic solid-phase extraction efficiency were optimized and obtained as: a sorbent amount of 15 mg; a sorption time of 20 min; an elution time of 5 min; NaCl concentration, 10% w/v; type and volume of the eluent 1 mL n-hexane/acetone (1:1 v/v). Under the optimum conditions detection limits and linear dynamic ranges were achieved in the range of 0.08-0.15 and 0.5-200 μg/L, respectively. The intra- and interday RSD% values were obtained in the range of 2.5-9.5 and 4.6-10.4, respectively. Ultimately, the applicability of the method was successfully confirmed by the extraction and determination of the model analytes in water samples, and human plasma in the range of microgram per liter and satisfactory results were obtained.

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Combination of magnetic solid-phase extraction and HPLC-UV for simultaneous determination of four phthalate esters in plastic bottled juice

Song

Wang

et al. 2021

Food Chemistry

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Solid-Phase Extraction of Phthalate Esters From Aqueous Samples Using Mesoporous Silica-Coated Multiwalled Carbon Nanotubes and Their Determination by HPLC

Cited by 5 publications

References 41 publications

MWCNT Buckypaper as Electrochemical Sensing Platform: A Rapid Detection Technology for Phthalic Acid Esters in Solutions*

MWCNT Buckypaper as Electrochemical Sensing Platform: A Rapid Detection Technology for Phthalic Acid Esters in Solutions*

Dispersive magnetic solid‐phase extraction of phthalate esters from water samples and human plasma based on a nanosorbent composed of MIL‐101(Cr) metal–organic framework and magnetite nanoparticles before their determination by GC–MS

Combination of magnetic solid-phase extraction and HPLC-UV for simultaneous determination of four phthalate esters in plastic bottled juice

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