Determination of diamondoids in crude oils using gas purge microsyringe extraction with comprehensive two dimensional gas chromatography-time-of-flight mass spectrometry

Zhang, Wanfeng; Zhu, Shizheng; Pang, Liling; Gao, Xingjian; Zhu, Guo‐Qiang; Li, Donghao

doi:10.1016/j.chroma.2016.11.055

Cited by 12 publications

(4 citation statements)

References 35 publications

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“…Crude oils were dissolved in n -hexane (100 mg mL −1 ) and spiked with 11 PA standards ( Table 1 ) at a certain concentration (100 ng mL −1 ) to study the extraction efficiency under different conditions. To obtain a blank sample for calibration and validation purposes, a crude oil was fractionated into saturates, aromatics, resins and asphaltenes (SARA fractionation method), 30 and then the saturates, aromatics and asphaltenes fractions were remixed together as the matrix free of PAs.…”

Section: Methodsmentioning

confidence: 99%

Magnetic extractant with an Fe₃O₄@SiO₂ core and aqueous ammonia coating for microextraction of petroleum acids

Zhu

Liu

et al. 2018

RSC Adv.

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Magnetic aqueous ammonia (MAA) was prepared as a magnetic extractant for dispersive microextraction of petroleum acids (PAs). The amount of extractant in MAA was custom-made by a simple approach. In the MAA composed of an aqueous ammonia coating and Fe 3 O 4 @SiO 2 core, the coating is a base extractant that can selectively extract acids, while the magnetic core serves as a support to achieve dispersion as well as rapid magnetic retrieval of the extractant during the extraction processes. This is the first use of reusable, stable and modifiable Fe 3 O 4 @SiO 2 as a support instead of bare Fe 3 O 4 in a magnetic particle assisted dispersive liquid-liquid microextraction technique. The parameters that affect extraction efficiency were investigated. The sampling step as well as the desorption step can be completed in 2 min. The linear ranges are 5-5000 ng g À1 , while the limits of quantification range from 2.5 to 6.2 ng g À1. The recoveries in spiked crude oil samples are in the range of 79.1% to 112.1% with relative standard deviations less than 11.3% (intra-day) and 13.4% (inter-day). Finally, the proposed method was applied to the analysis of PAs in diluted crude oils with different maturities. In comparison to the existing methods for extraction of PAs, the proposed method provides superior performances including high throughput (12-well plate), high degree of sample clean-up, and low consumption of separation material, solvent and time.

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Section: Methodsmentioning

confidence: 99%

Magnetic extractant with an Fe₃O₄@SiO₂ core and aqueous ammonia coating for microextraction of petroleum acids

Zhu

Liu

et al. 2018

RSC Adv.

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“…Zhu et al 21 proposed a gas purge microsyringe extraction (GP-MSE) device, which was combined with GC−MS to analyze crude oil samples. 22 The obtained data were analyzed by multivariate statistical analysis. It was found that light hydrocarbons can be used as alternatives to conventional biomarkers, 23 and a method for indicating the direction of oil migration by the content of dimethyldibenzothiophene compounds was proposed.…”

Section: Introductionmentioning

confidence: 99%

“…Similarly, Zhang et al employed GC × GC/TOF MS and PCA to differentiate oil sources and identified a series of triaromatic steroid compounds as suitable marker compounds for crude oil screening. Zhu et al proposed a gas purge microsyringe extraction (GP-MSE) device, which was combined with GC–MS to analyze crude oil samples . The obtained data were analyzed by multivariate statistical analysis.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Differential Markers among Crude Oil Samples Using UPLC-QE-MS/MS and Multivariate Statistical Analysis

Wang

Zuo

Gao³

et al. 2023

Energy Fuels

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In this study, we utilized ultra-high-performance liquid chromatography–Q Exactive plus Orbitrap mass spectrometry (to analyze the compounds in crude oil samples from two different reservoirs and proposed a novel analytical approach. The new method encompasses three-dimensional visualization of mass spectrometry (MS) data, various multivariate statistical analyses, and a combination of multivariate statistical and conventional analytical methods. The results revealed that the differential markers of the two groups of crude oil samples were primarily concentrated in N1, N1O1, and N1O1S1 compounds, with four-ring alkaline nitrogen-containing compounds such as benzacridines and highly condensed alkaline nitrogen-containing compounds serving as the best differential markers for distinguishing the two groups of crude oil samples. Furthermore, we discussed the application value of this method in petroleum-contaminated groundwater. This method demonstrates the potential and application value of multivariate statistical methods in the analysis of high-resolution MS data of crude oil.

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“…4,5 In our group, gas purge microsyringe extraction (GP-MSE) and micro-solid phase extraction based on a glass pipette have been developed recently and shows some outstanding advantages, but needs to couple other sample pretreatment steps when analyzing water samples. [6][7][8][9] Magnetic solid phase extraction (MSPE), developed from SPE, has drawn great attention for its advantages of extraction efficiency and material reuse. [10][11][12][13][14] Magnetic or magnetizable adsorbents can be dispersed in sample matrix for preconcentration of target analytes, and isolated from matrix by using an external magnet.…”

Section: Introductionmentioning

confidence: 99%

Magnetic graphene solid-phase extraction in the determination of polycyclic aromatic hydrocarbons in water

et al. 2017

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Determination of diamondoids in crude oils using gas purge microsyringe extraction with comprehensive two dimensional gas chromatography-time-of-flight mass spectrometry

Cited by 12 publications

References 35 publications

Magnetic extractant with an Fe₃O₄@SiO₂ core and aqueous ammonia coating for microextraction of petroleum acids

Magnetic extractant with an Fe₃O₄@SiO₂ core and aqueous ammonia coating for microextraction of petroleum acids

Characterization of Differential Markers among Crude Oil Samples Using UPLC-QE-MS/MS and Multivariate Statistical Analysis

Magnetic graphene solid-phase extraction in the determination of polycyclic aromatic hydrocarbons in water

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Determination of diamondoids in crude oils using gas purge microsyringe extraction with comprehensive two dimensional gas chromatography-time-of-flight mass spectrometry

Cited by 12 publications

References 35 publications

Magnetic extractant with an Fe3O4@SiO2 core and aqueous ammonia coating for microextraction of petroleum acids

Magnetic extractant with an Fe3O4@SiO2 core and aqueous ammonia coating for microextraction of petroleum acids

Characterization of Differential Markers among Crude Oil Samples Using UPLC-QE-MS/MS and Multivariate Statistical Analysis

Magnetic graphene solid-phase extraction in the determination of polycyclic aromatic hydrocarbons in water

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Product

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Magnetic extractant with an Fe₃O₄@SiO₂ core and aqueous ammonia coating for microextraction of petroleum acids

Magnetic extractant with an Fe₃O₄@SiO₂ core and aqueous ammonia coating for microextraction of petroleum acids