Polypyrrole/montmorillonite nanocomposite as a new solid phase microextraction fiber combined with gas chromatography–corona discharge ion mobility spectrometry for the simultaneous determination of diazinon and fenthion organophosphorus pesticides

Jafari, Mohammad T.; Saraji, Mohammad; Sherafatmand, Hossein

doi:10.1016/j.aca.2014.01.037

Cited by 112 publications

(41 citation statements)

References 47 publications

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“…The ion mobility spectrum of diazinon shows only one ion peak at the drift time of 8.16 ms. To calculate the reduced mobility of the analyte, nicotinamide with the reduced mobility (K 0 ) value of 1.85 cm 2 /V.s was used as an external standard. The K 0 value of diazinon was 1.46, which was in agreement with the previously reported value [14].…”

Section: Ion Mobility Spectrumsupporting

confidence: 92%

Sol–gel/nanoclay composite as a sorbent for microextraction in packed syringe combined with corona discharge ionization ion mobility spectrometry for the determination of diazinon in water samples

Saraji

Jafari

Amooshahi

2017

J of Separation Science

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In this work, the microextraction in packed syringe technique combined with corona discharge ion mobility spectrometry was used for determining diazinon in water samples. A new porous composite of nanoclay and polysiloxane was prepared using a sol-gel process. An amount of 2.0 mg of the sorbent was packed in a 250 μL syringe and used for extraction. A volume of 2 mL of the sample was passed through the sorbent bed, and the entrapped analyte was eluted by 25 μL of methanol. Important parameters influencing the extraction performance were investigated. Under optimum experimental conditions, the detection limit for diazinon was 0.07 ng/mL. The intra- and inter-day relative standard deviations were 5.0 and 12.3%, respectively. The calibration curve was linear in the concentration range from 0.2 to 20.0 ng/mL (r = 0.999). The applicability of the method was demonstrated by analyzing spiked real water samples and the spiking recoveries were in the range of 95 to 106%.

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Section: Ion Mobility Spectrumsupporting

confidence: 92%

Sol–gel/nanoclay composite as a sorbent for microextraction in packed syringe combined with corona discharge ionization ion mobility spectrometry for the determination of diazinon in water samples

Saraji

Jafari

Amooshahi

2017

J of Separation Science

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“…To further demonstrate the superiority of our proposed method, a comparison of the important features of the proposed method with those reported in the literature [37][38][39][40][41][42][43] is given in Table 2. As could be seen, the proposed method exhibits wider linear ranges and lower LODs.…”

Section: Comparison With Other Related Spme Methodsmentioning

confidence: 98%

Application of Magnetic Graphene Nanoparticles for Determination of Organophosphorus Pesticides Using Solid-Phase Microextraction

2016

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“…Montmorillonite (MMT) is an important class of clay minerals. It has a high aspect ratio, excellent tensile strength and good thermal stability . Therefore, MMT has been widely used as an additive for polymers to improve their impact resistance, fatigue resistance, dimensional stability, thermal stability and gas barrier properties .…”

Section: Introductionmentioning

confidence: 99%

Starch‐MMT composite films: Effects of bio‐inspired modification on MMT

Zhou

2015

Starch Stärke

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Montmorillonite (MMT) was modified by bio-inspired polydopamine (PDA) to obtain an exfoliated structure. Then, the modified MMT (MMT-D) and the original MMT were incorporated into starch to fabricate individual composite films. MMT lamellae were mostly intercalated in starch, while those of MMT-D were more likely to be exfoliated and presented better dispersibility, as revealed by the surface morphologies and XRD patterns of the composite films. Although MMT provided greater thermal protection to starch, MMT-D improved the tensile properties of the composite films more effectively. The composite film containing 2% MMT-D displayed a tensile strength as high as 8.1 MPa and a Young's modulus as high as 416.4 MPa, which were 2.1 and 3.8 times the values of the pure starch film, respectively. However, the composite films containing MMT had reduced tensile strength and modulus. This study showed that PDA pre-modification of MMT could improve the performance of starch-based nanocomposites, thus accelerating their acceptance in food packaging applications.

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Polypyrrole/montmorillonite nanocomposite as a new solid phase microextraction fiber combined with gas chromatography–corona discharge ion mobility spectrometry for the simultaneous determination of diazinon and fenthion organophosphorus pesticides

Cited by 112 publications

References 47 publications

Sol–gel/nanoclay composite as a sorbent for microextraction in packed syringe combined with corona discharge ionization ion mobility spectrometry for the determination of diazinon in water samples

Sol–gel/nanoclay composite as a sorbent for microextraction in packed syringe combined with corona discharge ionization ion mobility spectrometry for the determination of diazinon in water samples

Application of Magnetic Graphene Nanoparticles for Determination of Organophosphorus Pesticides Using Solid-Phase Microextraction

Starch‐MMT composite films: Effects of bio‐inspired modification on MMT

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