Metal oxides in sample pretreatment

Xu, Juntian; Wu, Pu Wei; Ye, Er-Cui; Yuan, Bi-Feng

doi:10.1016/j.trac.2016.02.027

Cited by 63 publications

(19 citation statements)

References 162 publications

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“…were easily captured for subsequent iEESI-MS analysis. The selectivity of Fe 3 O 4 @Ppy nanocomposites is a notable drawback when treating chemicals with similar polarity 38 , 42 , 63 . To address this concern, highly selectivity and specificity could be introduced by MIPs material.…”

Section: Discussionmentioning

confidence: 99%

Internal Extractive Electrospray Ionization Mass Spectrometry for Quantitative Determination of Fluoroquinolones Captured by Magnetic Molecularly Imprinted Polymers from Raw Milk

Zhang

Kou

Bibi

et al. 2017

Sci Rep

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Antibiotics contamination in food products is of increasing concern due to their potential threat on human health. Herein solid-phase extraction based on magnetic molecularly imprinted polymers coupled with internal extractive electrospray ionization mass spectrometry (MMIPs-SPE-iEESI-MS) was designed for the quantitative analysis of trace fluoroquinolones (FQs) in raw milk samples. FQs in the raw milk sample (2 mL) were selectively captured by the easily-lab-made magnetic molecularly imprinted polymers (MMIPs), and then directly eluted by 100 µL electrospraying solvent biased with +3.0 kV to produce protonated FQs ions for mass spectrometric characterization. Satisfactory analytical performance was obtained in the quantitative analysis of three kinds of FQs (i.e., norfloxacin, enoxacin, and fleroxacin). For all the samples tested, the established method showed a low limit of detection (LOD ≤ 0.03 µg L−1) and a high analysis speed (≤4 min per sample). The analytical performance for real sample analysis was validated by a nationally standardized protocol using LC-MS, resulting in acceptable relative error values from −5.8% to +6.9% for 6 tested samples. Our results demonstrate that MMIPs-SPE-iEESI-MS is a new strategy for the quantitative analysis of FQs in complex biological mixtures such as raw milk, showing promising applications in food safety control and biofluid sample analysis.

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Section: Discussionmentioning

confidence: 99%

Internal Extractive Electrospray Ionization Mass Spectrometry for Quantitative Determination of Fluoroquinolones Captured by Magnetic Molecularly Imprinted Polymers from Raw Milk

Zhang

Kou

Bibi

et al. 2017

Sci Rep

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“…For each test we used new polished samples in order to have efficient results. The pin-on-disc contact tests were performed under different loads (5,10,15,20 and 30 N) with a siding distance of 900 m and 1800m, sliding speed of 0.5 m/s and 1m/s. A sintered steel disc type X200Cr12 was employed as the counter body with a new disc being used for each test.…”

Section: Wear Resistance Performancementioning

confidence: 99%

“…The coatings of X30Cr13 are one of most technology that is required as a response to improve the reliability of parts under multiple stresses in manufactories like automotive, food and chemistry [16][17][18]. Due to their method of production, the microstructure of the sprayed coatings is complex and the properties are dependent on there [19,20]. The objective of this study is to establish relationships between microstructure and tribological properties.…”

Section: Introductionmentioning

confidence: 99%

Effect of Bond-Layer on the Wear Resistance of a Martensitic Stainless Steel Coating Obtained by Wire Arc Spray

Younes¹,

Bradai²,

Sadeddine³

et al. 2020

RCMA

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Thermally sprayed of X30Cr13 martensitic stainless steel coatings are widely used to reduce degradation of components and structures due to mechanical wear. In this paper, the microstructure and mechanical properties of X30Cr13 coated onto on 35CrMo4 using Wire Arc Spray Process (WASP) are investigated. These coatings were made with to different system bond-coat layer which is constituted by Ni-Al. The microstructure characteristics of the coatings are studied using the combined techniques of X-ray diffraction (XRD), scanning electron microscopy (SEM). Measurements of Vickers hardness was carried out on top of the surface of stainless steel. The scanning electron microscopy presents a dense microstructure of this stainless steel, which had a homogeneous compact lamellae shape with the presence of pores and unmelted particles. The wear resistance of the two systems composite Sub/Bond-Coat/X30Cr13 and Sub/X30Cr13 is affected by sliding velocities under different applied loads. The system composite Sub/X30Cr13exhibits low wear resistance than Sub/Bond-Coat/X30Cr13 coating.

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“…As can be seen from Figure 5, the maximum values were obtained without changing pH of the solutions. This can be explained by low solubility of MNP and RHA-MNP at pH pzc [31] and by the ligand exchange originating between surface of adsorbents and the anionic dye AR114 [32]. Lower values for AR114 were obtained at basic pH values than acidic pH values.…”

Section: The Effect Of Ph Initial Dye Concentration and Contactmentioning

confidence: 99%

Comparison of Acid Red 114 Dye Adsorption by Fe₃O₄and Fe₃O₄Impregnated Rice Husk Ash

Kaykıoğlu

Güneş

2016

Journal of Nanomaterials

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The removal of Acid Red 114 (AR114) dye by adsorption process, using the magnetic nanoparticle (RHA-MNP) which is produced from rice husk ash burned at 300 ∘ C and the magnetic nanoparticle (MNP, Fe 3 O 4 ), was studied. Batch processes were used under different test parameters: pH (2, 4, 6, and 10) and without pH, initial dye concentration (20,40, 60, 80, and 100 mg/L), and contact time (0, 1, 5, 10, 15, 30, 45, 60, 90, and 150 min). Optimum conditions for AR114 removal were found to be at natural pH (pH without correction) for both adsorbents. Freundlich isotherm was found to be more consistent for MNP and Langmuir isotherm was found to be more consistent for RHA-MNP. The maximum adsorption capacities of MNP and RHA-MNP adsorbents for AR114 dye were equal to 111 mg/g. The kinetic experimental data fitted the pseudo-second-order model for both MNP and RHA-MNP. It can be concluded that RHA-MNP which is a waste could be used as low-cost adsorbent to remove AR114 from aqueous solution.

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Metal oxides in sample pretreatment

Cited by 63 publications

References 162 publications

Internal Extractive Electrospray Ionization Mass Spectrometry for Quantitative Determination of Fluoroquinolones Captured by Magnetic Molecularly Imprinted Polymers from Raw Milk

Internal Extractive Electrospray Ionization Mass Spectrometry for Quantitative Determination of Fluoroquinolones Captured by Magnetic Molecularly Imprinted Polymers from Raw Milk

Effect of Bond-Layer on the Wear Resistance of a Martensitic Stainless Steel Coating Obtained by Wire Arc Spray

Comparison of Acid Red 114 Dye Adsorption by Fe₃O₄and Fe₃O₄Impregnated Rice Husk Ash

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Metal oxides in sample pretreatment

Cited by 63 publications

References 162 publications

Internal Extractive Electrospray Ionization Mass Spectrometry for Quantitative Determination of Fluoroquinolones Captured by Magnetic Molecularly Imprinted Polymers from Raw Milk

Internal Extractive Electrospray Ionization Mass Spectrometry for Quantitative Determination of Fluoroquinolones Captured by Magnetic Molecularly Imprinted Polymers from Raw Milk

Effect of Bond-Layer on the Wear Resistance of a Martensitic Stainless Steel Coating Obtained by Wire Arc Spray

Comparison of Acid Red 114 Dye Adsorption by Fe3O4and Fe3O4Impregnated Rice Husk Ash

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Comparison of Acid Red 114 Dye Adsorption by Fe₃O₄and Fe₃O₄Impregnated Rice Husk Ash