Chromatographic peak reconstruction algorithm to improve qualitative and quantitative analysis of trace pesticide residues

Chen, Xiuping; Fan, Ruo-Jing; Zhang, Fang; Li, Zhongquan; Xu, Bin

doi:10.1002/rcm.7762

“…Chromatographic techniques such as GC or HPLC are among the most widely used methods for analysis of harmful organic contaminants such as BPA [11][12][13]. However their sensitivity and selectivity are usually insufficient for direct determination of these contaminants at very low concentration level in complex matrix food samples.…”

Section: Introductionmentioning

confidence: 99%

Untitled

2017

JAPLR

0

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A simple, reliable and suitable analytical method was developed for solid phase extraction of bisphenol A in several canned food products such as beverages, fruits, vegetables and foodstuffs bought in Sudan markets. The analysis done by using a packed Multi Walled Carbon Nanotubes (MWNTs) mini-column followed by highperformance liquid chromatography with fluorescence detection. In summary, we have preliminarily demonstrated that as promising sorbents, MWNTs have great potential for solid phase extraction of BPA. The recommended parameters of proposed method influencing the preconcentration of the analytes, such as pH of the sample, flow rate and sample volume have been used. Under the optimized conditions, the calibration graphs were linear with the correlation coefficient ranged 0.9906-0.9999. According to the results, the concentrations of BPA in samples exposed to direct sunlight were higher than samples that stored at room temperature. The range of BPA level of beverages were (0.3-0.8ng/ml) at room temperature where it were (1.5-2.1ng/mL) at beverages exposed to direct sunlight , in vegetables the levels were (20.0-38.0ng/g) at room temperature and (30.0-43.0ng/g) in vegetables exposed to direct sunlight , the levels in fruits were (6.0-24.0ng/g) at room temperature and in fruits exposed to direct sunlight were (8.0-38.0ng/g), in fat-containing products the levels of BPA at room temperature were (2.1-45.0ng/g) and (3.0-55.0ng/g) in products which exposed to direct sunlight. Limits of detection (S/N=3) from 0.1ng/mL in beverages to 5.5 ng/g in fruits. The accuracy of proposed method was tested by recovery measurements on standard bisphenol A spiked canned food samples, the recoveries ranged 90.2-102.0% were obtained.

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A novel strategy for extracted ion chromatogram extraction to improve peak detection in UPLC-HRMS

Lu

¹

,

Fan

²

,

Zhang

³

et al. 2018

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The Application of Multiwalled Carbon Nanotubes as Solid Phase Extraction Sorbent for Pre-concentration of Bisphenol A in Canned Food

Elbashir

¹

,

Omer

²

,

Ahmed

³

2017

JAPLR

0

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A simple, reliable and suitable analytical method was developed for solid phase extraction of bisphenol A in several canned food products such as beverages, fruits, vegetables and foodstuffs bought in Sudan markets. The analysis done by using a packed Multi Walled Carbon Nanotubes (MWNTs) mini-column followed by highperformance liquid chromatography with fluorescence detection. In summary, we have preliminarily demonstrated that as promising sorbents, MWNTs have great potential for solid phase extraction of BPA. The recommended parameters of proposed method influencing the preconcentration of the analytes, such as pH of the sample, flow rate and sample volume have been used. Under the optimized conditions, the calibration graphs were linear with the correlation coefficient ranged 0.9906-0.9999. According to the results, the concentrations of BPA in samples exposed to direct sunlight were higher than samples that stored at room temperature. The range of BPA level of beverages were (0.3-0.8ng/ml) at room temperature where it were (1.5-2.1ng/mL) at beverages exposed to direct sunlight , in vegetables the levels were (20.0-38.0ng/g) at room temperature and (30.0-43.0ng/g) in vegetables exposed to direct sunlight , the levels in fruits were (6.0-24.0ng/g) at room temperature and in fruits exposed to direct sunlight were (8.0-38.0ng/g), in fat-containing products the levels of BPA at room temperature were (2.1-45.0ng/g) and (3.0-55.0ng/g) in products which exposed to direct sunlight. Limits of detection (S/N=3) from 0.1ng/mL in beverages to 5.5 ng/g in fruits. The accuracy of proposed method was tested by recovery measurements on standard bisphenol A spiked canned food samples, the recoveries ranged 90.2-102.0% were obtained.

show abstract

Chromatographic peak reconstruction algorithm to improve qualitative and quantitative analysis of trace pesticide residues

Abstract: The developed CPR showed great potential in the analysis of trace analytes in complex matrices. It was proved to be a helpful data processing method for the monitoring of trace pesticide residues. Copyright © 2016 John Wiley & Sons, Ltd.

Cited by 3 publications

References 35 publications

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A novel strategy for extracted ion chromatogram extraction to improve peak detection in UPLC-HRMS

The Application of Multiwalled Carbon Nanotubes as Solid Phase Extraction Sorbent for Pre-concentration of Bisphenol A in Canned Food

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