Fengpeng Zhu
Zhengzhou University of Light Industry
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Featured researches published by Fengpeng Zhu.
Journal of Chromatography A | 2015
Yan-Bo Luo; Xue Li; Xingyi Jiang; Bao-Dong Cai; Fengpeng Zhu; Hongfei Zhang; Zaigen Chen; Yongqiang Pang; Yu-Qi Feng
In this study, magnetic graphene was used as modified quick, easy, cheap, effective, rugged and safe (QuEChERS) adsorbent for the determination of organochlorine pesticide (OCPs) residues in tobacco. To achieve the optimum conditions of modified QuEChERS procedure toward target analytes, several parameters affecting the clean-up efficiency including the amount of the adsorbent and clean-up time were investigated. Under the optimized conditions, a method for the determination of 26 OCPs residues in tobacco was established by coupling the modified QuEChERS procedure to on-line gel permeation chromatography-gas chromatography-tandem mass spectrometry (on-line GPC-GC-MS(2)). The limits of detection of proposed method for 26 OCPs residues ranged from 0.01275 to 3.150ng/g. And good linearities of the proposed method were obtained with coefficients of determination (R(2)) greater than 0.9985 for all target analytes. Good reproducibility of method was obtained as intra- and inter-day precisions, the relative standard deviations were less than 11.1 and 15.0%, respectively. The apparent recoveries were in the range of 64-126% at different concentrations for real samples. Compared with the reported methods for the determination of OCPs residues in tobacco, the proposed method has the advantages of simple to operate, low cost and high clean-up ability. Finally, the method was successfully applied to the analysis of OCPs residues in real samples.
Journal of Chromatography A | 2016
Yan-Bo Luo; Xiao-Jing Chen; Hongfei Zhang; Xingyi Jiang; Xue Li; Xiangyu Li; Fengpeng Zhu; Yongqiang Pang; Hongwei Hou
In this study, a silica/primary secondary amine (SiO2/PSA) was used as an in-pipette-tip solid phase extraction (SPE) sorbent for the simultaneous determination of polycyclic aromatic hydrocarbons (PAHs) and tobacco-specific N-nitrosamines (TSNAs) in mainstream cigarette smoke (MSS). We investigated several parameters including an extraction procedure of total particulate matter, type and amount of sorbent and on-line gel permeation chromatography parameters to obtain optimum conditions for a new strategy to target analytes. Under the optimized conditions, we developed a method for the simultaneous determination of PAHs and TSNAs in MSS by coupling in-pipette-tip SPE procedures to an on-line gel permeation chromatography-gas chromatography-tandem mass spectrometry (on-line GPC-GC-MS(2)). Our method had limits of detection for target analytes ranging from 0.01 to 0.23ng/cig. Good linearities were obtained with coefficients of determination (R(2)) greater than 0.9984 for all target analytes. Good reproducibility was obtained as intra- and inter-day precisions, and the relative standard deviations were less than 11.4 and 13.3%, respectively. The recoveries were in the range of 77.1-108.6% at different concentrations for real samples. Compared to previous standard methods for the determination of PAHs and TSNAs in MSS, our method was highly effective, fast, and had low consumption of organic solvent and a high degree of automation. Finally, our method successfully analyzed PAHs and TSNAs in real samples, and no significant deviations were observed when compared to similar analysis using standard methods.
Nicotine & Tobacco Research | 2018
Xiangyu Li; Yanbo Luo; Xingyi Jiang; Hongfei Zhang; Fengpeng Zhu; Shaodong Hu; Hongwei Hou; Qingyuan Hu; Yongqiang Pang
Introduction Tobacco Heating System 2.2 (THS 2.2, marketed as iQOS) is a heat-not-burn (HNB) tobacco product that has been successfully introduced to global markets. Despite its expanding market, few independent and systematic researches into THS 2.2 have been carried out to date. Methods We tested a comprehensive list of total particulate matter (TPM), water, tar, nicotine, propylene glycol, glycerin, carbon monoxide, volatile organic compounds, aromatic amines, hydrogen cyanide, ammonia, N-nitrosamines, phenol, and polycyclic aromatic hydrocarbon under both ISO and HCI regimes. We also simulated pyrolysis of THS 2.2 heating sticks and made comparisons with conventional cigarette tobacco fillers using comprehensive gas chromatography-mass spectrometry (GC × GC-MS) to determine whether the specially designed ingredients help reduce harmful constituents. Results Other than some carbonyls, ammonia, and N-nitrosoanabasine (NAB), the delivered releases from THS 2.2 were at least 80% lower than those from 3R4F. Tar and nicotine remained almost the same as 3R4F. Interestingly, the normalized yield of THS 2.2 to 3R4F under the HCI regime was lower than that under the ISO regime. Conclusions THS 2.2 delivered fewer harmful constituents than the conventional cigarette 3R4F. Simulated pyrolysis results showed that the lower temperature instead of specially designed ingredients contributed to the distinct shift. In particular, if smoking machines are involved to evaluate the HNB products, smoking regimes of heat-not-burn tobacco products should be carefully chosen. Implications To our knowledge, few independent studies of HNB products have been published. In this paper, a comprehensive list of chemical releases was tested systematically and compared to those from 3R4F. Although THS 2.2 generates lower levels of harmful constituents, the nicotine and tar levels were almost identical to 3R4F.The results should be discussed carefully in the future when assessing the dual-use with other conventional cigarettes, nicotine dependence of HNB products, etc. This study also suggests that regulatory agencies should pay attention to the smoking regimes that are adopted to evaluate HNB tobacco products.
Chinese Journal of Analytical Chemistry | 2015
Yan-Bo Luo; Hao-Bo Zheng; Xingyi Jiang; Xue Li; Hongfei Zhang; Fengpeng Zhu; Yongqiang Pang; Yu-Qi Feng
Abstract Magnetic graphitized carbon black/primary secondary amine/magnetite (GCB/PSA/Fe3O4) composite material was used as modified QuEChERS adsorbent for the clean-up of tobacco extract. A method for the determination of ten pesticide residues in tobacco was proposed by coupling the modified QuEChERS procedure to on-line gel permeation chromatography-gas chromatography/tandem mass spectrometry (GPC-GC-MS/MS). Several parameters affecting clean-up efficiency were investigated. Under optimized conditions including 3.30–5.30 min of on-line GPC collection time, 80 mg of adsorbent amount, and 1.0 min of clean-up time, the limits of detection for target analytes ranged from 0.940 ng L−1 to 100 ng L−1. The linear regression data of the proposed method were obtained with correlation coefficients ≥ 0.9989 for all target analytes. The relative standard deviations for both intra- and inter-day were less than 15.1% and 19.8%, respectively. The recoveries were in the range of 68.8%–132.2% for real samples. Finally, the method was successfully applied to the analysis of pesticide residues in real samples, and the results were in agreement with those obtained from the current standard method.
Chirality | 2018
Hongfei Zhang; Yongqiang Pang; Yanbo Luo; Xiangyu Li; Huan Chen; Shulei Han; Xingyi Jiang; Fengpeng Zhu; Hongwei Hou; Qingyuan Hu
Evaluating the source of nicotine in e-liquid is a problem. Tobacco-derived nicotine contains predominantly (S)-(-)-nicotine, whereas tobacco-free nicotine products may not. Thus, we developed a new normal phase high-performance liquid chromatography method to determinate the enantiomeric composition of nicotine in 10 kinds of flue-cured tobacco, 3 kinds of burley, 1 kind of cigar tobacco, 2 kinds of oriental tobacco, 5 kinds of Virginia cigarette, 5 kinds of blend cigarette, 10 kinds of e-liquid, and 4 kinds of smokeless tobacco. The amount of (R)-(+)-nicotine ranged from ~0.02% to ~0.76% of total nicotine. An e-liquid sample had the highest level of (R)-(+)-nicotine. The extraction and purification processes used to obtain commercial (S)-(-)-nicotine from the tobacco do not decrease the amount of (R)-(+)-nicotine in tobacco. So the amount of (R)-(+)-nicotine in samples in our work were the same as tobacco samples.
Archive | 2008
Qingyuan Hu; Hongwei Hou; Gangling Tang; Fengpeng Zhu; Yange Zhang; Yongqiang Pang; Zhaoyang Bian
Archive | 2010
Yange Zhang; Hongwei Hou; Fengpeng Zhu; Gangling Tang; Zhaoyang Bian; Yongqiang Pang; Qingyuan Hu
Archive | 2010
Gangling Tang; Hongfei Zhang; Zhaoyang Bian; Qingyuan Hu; Zhonghao Li; Zaigen Chen; Fengpeng Zhu; Hongwei Hou; Huan Chen; Nan Liu; Xingyi Jiang
Biological Trace Element Research | 2014
Yongfeng Tian; Hongwei Hou; Fengpeng Zhu; An Wang; Yong Liu; Qingyuan Hu
Archive | 2012
Yongqiang Pang; Hongwei Hou; Zaigen Chen; Gangling Tang; Huan Chen; Xingyi Jiang; Fengpeng Zhu; Xue Li; Qingyuan Hu