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Determination of persistent organic pollutants by gas chromatography/laser multiphoton ionization/time-of-flightmass spectrometry

Osamu SHITAMICHI, Taiki MATSUI, Yamei HUI, Weiwei CHEN, Totaro IMASAKA

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 1,   Pages 26-31 doi: 10.1007/s11783-011-0374-7

Abstract: 2 fold in comparison with those obtained using a conventional capillary column, since the retention timewas reduced and the amount of analytes introduced into the mass spectrometer per unit time could beAs demonstrated, a technique involving laser multiphoton ionization/time-of-flight mass spectrometry

Keywords： polychlorinated biphenyls (PCBs)     polycyclic aromatic hydrocarbons (PAHs)     laser multiphoton ionization/time-of-flight mass spectrometry (MPI/TOF-MS)    

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Peroxyacetyl nitrate measurements by thermal dissociation–chemical ionization mass spectrometry in an

Xinfeng Wang, Tao Wang, Likun Xue, Wei Nie, Zheng Xu, Steven C. N. Poon, Wenxing Wang

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 4, doi: 10.1007/s11783-017-0925-7

Abstract: A rapid and highly selective technique of thermal dissociation–chemical ionization mass spectrometry(TD-CIMS) was recently developed to measure the abundance of PAN in real time; however, it may be subject

Keywords： TD-CIMS     Peroxyacetyl nitrate     Interference     Photochemical pollution     Formation efficiency    

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compounds in water using liquid-liquid microextraction coupled with gas chromatography—positive chemical ionization-tandemmass spectrometry

Jian LU,Paul S. WILLS,P. CHRIS WILSON

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 3,   Pages 477-481 doi: 10.1007/s11783-015-0820-z

Abstract: analysis of off-flavor/odor compounds in fresh and salt water using gas chromatography with chemical ionization-tandemmass spectrometry.

Keywords： off-flavor/odor compounds     liquid-liquid microextraction     gas chromatography-tandem mass spectrometry    

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Comparative proteomic analysis of cold responsive proteins in two wheat cultivars with different tolerance to spring radiation frost

Shujuan ZHANG,Guoqi SONG,Yulian LI,Jie GAO,Jiao WANG,Guiju CHEN,Haosheng LI,Genying LI,Zhendong ZHAO

Frontiers of Agricultural Science and Engineering 2014, Volume 1, Issue 1,   Pages 37-45 doi: 10.15302/J-FASE-2014008

Abstract: degradation and signal transduction were isolated and identified by two-dimensional electrophoresis and MALDI-TOF-TOFMS.

Keywords： common wheat     spring radiation frost     proteomic analysis     2-DE     MALDI-TOF-TOF MS    

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Etiology of invasive candidosis agents in Russia: a multicenter epidemiological survey

N.V. Vasilyeva, E.R. Raush, M.V. Rudneva, T.S. Bogomolova, A.E. Taraskina, Yong Fang, Fengmin Zhang, N.N. Klimko

Frontiers of Medicine 2018, Volume 12, Issue 1,   Pages 84-91 doi: 10.1007/s11684-017-0612-x

Abstract: The species were identified by DNA sequencing and MALDI-TOF mass-spectrometry.

Keywords： prevalence     &Scy     andida species     invasive candidosis     nosocomial     etiology     MALDI-TOF mass-spectrometry    

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Transient imaging with a time-of-flight camera and its applications

Jing-yu Lin, Ri-hui Wu, Hong-man Wang, Ye-bin Liu,jylin@gxu.edu.cn,liuyebin@tsinghua.edu.cn

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 9,   Pages 1268-1276 doi: 10.1631/FITEE.1700556

Abstract: is a technique in photography that records the process of light propagation before it reaches a stationary state such that events at the light speed level can be observed. In this review we introduce three main models for with a : correlation model, frequency-domain model, and compressive sensing model. applications usually involve resolving the problem of light transport and separating the light rays arriving along different paths. We discuss two of the applications: imaging objects inside and recovering both the shape and texture of an object around a corner.

Keywords： Transient imaging     Time-of-flight (ToF) camera     Scattering media     Around corners    

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several classes of antibiotics in water, sediments, and fish muscles by liquid chromatography–tandem mass spectrometry

WEI Yimei,ZHANG Yuan,XU Jian,GUO Changsheng,LI Lei,FAN Wenhong

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 3,   Pages 357-371 doi: 10.1007/s11783-013-0580-6

Abstract: Liquid chromatography–tandem mass spectrometry (LC-MS/MS) with multiple reaction monitoring (MRM) detection

Keywords： antibiotics     liquid chromatography–tandem mass spectrometry (LC-MS/MS)     water     sediment     fish muscle    

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Transient imaging with a time-of-flight cameraand its applications

Jing-yu LIN, Ri-hui WU, Hong-man WANG, Ye-bin LIU

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 9,   Pages 1268-1276 doi: .org/10.1631/FITEE.1700556

Abstract: In thisreview we introduce three main models for transient imaging with atime-of-flight (ToF) camera:

Keywords： Transient imaging     Time-of-flight(ToF) camera     Scattering media     Around corners    

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An efficient resin for solid-phase extraction and determination by UPLCMS/MS of 44 pharmaceutical personal

Feng Zhu, Zhijian Yao, Wenliang Ji, Deye Liu, Hao Zhang, Aimin Li, Zongli Huo, Qing Zhou

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 3, doi: 10.1007/s11783-020-1228-y

Abstract: Detection limits of method (SPE-UPLC-MS/MS) ranged between 0.03 and 0.6 ng/L. 22 PPCPs were determinedhome-made hydrophilic polymeric sorbent followed by ultra-performance liquid chromatography and tandem mass spectrometry

Keywords： extraction     Pharmaceuticals and personal care product     Ultra-performance liquid chromatography and tandem mass spectrometry    

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Perfluorocarboxylic acids (PFCAs) and perfluoroalkyl sulfonates (PFASs) in surface and tap water around Lake Taihu in China

Yong QIU, He JING, Hanchang SHI,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 3,   Pages 301-310 doi: 10.1007/s11783-010-0236-8

Abstract: Perfluorinated compounds (PFCs) are ubiquitously distributed in the environment mainly as perfluoro-carboxylic acids (PFCAs) and perfluoroalkyl sulfonates (PFASs). In this paper, six PFCAs and two PFASs were quantified in surface and tap water samples from 12 sites around Lake Taihu near Shanghai City in East China. Predominant PFCs were perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS), of which the concentration ranges were 6.8–206 and 1.2–45 ng·L, the geometric means were 35.3 and 9.4 ng·L, and the median (quartile range) values were 31.4 (34.4) and 10.4 (10.7) ng·L, respectively. Other PFCs were also detected but in much lower concentrations than PFOA. The sources of the PFCs were expected to be direct industrial discharges in the Lake Taihu area, and this area was also a possible source of PFCs contaminations in Shanghai district in the downstream. PFCs distributions were found different in the upstream, downstream and north part of Lake Taihu. Occurrences of PFCs in the tap water in Lake Taihu area indicated their exposure to the local people. A brief estimation of the environmental risks by PFCs implied no acute or immediate risks from PFCs to local human health, but chronic risks from PFOA in the tap water should be considered in the downstream regions.

Keywords： perfluoroalkyl sulfonates (PFASs)     Lake Taihu area     ultra performance liquid chromatography with tandem mass spectrometry(UPLC-MS)    

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Pyrolysis behaviors of oil sludge based on TG/FTIR and PY-GC/MS

Wei SONG, Jianguo LIU, Yongfeng NIE,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 1,   Pages 59-64 doi: 10.1007/s11783-009-0152-y

Abstract: Thermogravimetric Analysis-Fourier Transform Infrared Spectroscopy and Pyrolysis-Gas Chromatography/Mass Spectrometry

Keywords： Thermogravimetric Analysis-Fourier Transform Infrared Spectroscopy (TG-FTIR)     Pyrolysis-Gas Chromatography/Mass Spectrometry(PY-GC/MS)    

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Photocatalytic degradation of methyl orange using ZnO/TiO composites

Ming GE , Changsheng GUO , Xingwang ZHU , Lili MA , Wei HU , Yuqiu WANG , Zhenan HAN ,

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 3,   Pages 271-280 doi: 10.1007/s11783-009-0035-2

Abstract: A sample analysis was conducted using liquid chromatography coupled with electrospray ionization ion-trapmass spectrometry.

Keywords： degradation     methyl orange     ZnO/TiO2 composites     high performance liquid chromatography mass spectrometry(HPLC-MS)    

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Analysis of Brucella cellular fatty acids

Zhen-Xiang ZHAO MS, Hai JIANG MD, Bu-Yun CUI MS, Hong-Yan ZHAO, Dong-Ri PIAO MS, Lan-Yu LI, Su-Zhen HAOMS,

Frontiers of Medicine 2010, Volume 4, Issue 2,   Pages 216-219 doi: 10.1007/s11684-010-0037-2

Abstract: To acquire data of Brucella cellular fatty acids (CFAs) and probe into the possibility of utilizing CFAs information in typing Brucella, 19 reference strains were subjected to CFAs study. After all strains were inoculated on Brucella Agar plates, the cells were harvested, saponificated, methylated and extracted to provide fatty acid methylesters for gas chromatography (GC) analysis. Based on the CFAs data matrix, a dendrogram of 19 reference strains was generated by SPSS11.5 software package. The results showed that 19 reference strains were divided into five clusters: cluster 1 included (bv. 1, 2, 3, 5) and ; cluster 2 included (bv. 3, 4, 5, 6) and (bv. 1, 2, 3); cluster 3 included (bv. 1, 2, 7, 9) and ; cluster 4 was (bv. 4); and cluster 5 was . Typing Brucella by GC analysis of CFAs is a good method to reflect drug resistance of Brucella, and the classification is beneficial for clinical therapy. It also provides a new result of typing and demonstrates that the traditional classification is not completely reasonable. CFAs analysis may identify (bv. 4) and .

Keywords： Brucella     gas chromatography     cellular fatty acids     dendrogram     typing    

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taste and odor compounds in surface water using solid-phase extraction and gas chromatography-mass spectrometry

Wenfeng SUN, Ruibao JIA, Baoyu GAO

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 1,   Pages 66-74 doi: 10.1007/s11783-010-0257-3

Abstract: In this paper, a method using solid-phase extraction (SPE) and gas chromatography-mass spectrometry (GC-MS) was developed to simultaneously analyze five taste and odor compounds in surface water, i.e.,The mass spectrometry was operated in selective ion monitoring (SIM) mode.

Keywords： solid-phase extraction (SPE)     gas chromatography-mass spectrometry (GC-MS)     taste and odor compounds     surface    

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Preparation, identification, and clinical application of anti-HBs monoclonal antibody that binds both wild-type and immune escape mutant HBsAgs

Fanghe LI BM , Chunyan ZHANG MS , Jinghua LIU MS , Xiaoyan ZHANG MS , Bing YAN , Bo ZHANG MS , YongguoHUANG MS , Jingsong GONG BM , Yan CHEN BM ,

Frontiers of Medicine 2009, Volume 3, Issue 3,   Pages 277-283 doi: 10.1007/s11684-009-0047-0

Abstract: Using a standard cellular fusion technique and indirect enzyme-linked immunosorbent assay (ELISA), a hybridoma cell line strain secreting anti-HBs monoclonal antibody (mAb) (defined G6 mAb) was obtained. The cells grew and secreted mAb stably. Antibody titers in the culture supernatant and ascites were 2.048×10 and 4.096×10, respectively. By applying the anti-HBs G6 mAb and horseradish peroxidase (HRP)-labeled goat anti-HBs antibody, we developed a sandwich ELISA (defined G6m ELISA) for detecting both wild-type and immune escape mutant HBsAgs (IEM HBsAg). The assay was performed to detect 17 species of genome recombinant expression HBsAg, including two wild-type species and 15 IEM HBsAg species, which varied in the “a” determinant, in a group of patients infected with hepatitis B virus (HBV). The patients previously had a lower ELISA detection signal [(absorbance of patients/absorbance of normal people (P/N): 1.0―4.5)]. The results demonstrated that the sensitivity of this assay to wild-type HBsAg was no less than 0.125g/L; 12 of 15 IEM HBsAg species (P/N≥2.5) were positive for G6 mAb. Of the positive IEM HBsAg species, two had a low absorbance value at 450nm (), one had an intermediate value and nine had a high value, which was 7.55%(mean), 59.4% and 92.1%―109.4% of the wild-type value, respectively. The two species with low value and the three negative species mutated at the bases 120―124 in the first loop of the HBV “a” determinant. Using the G6 ELISA and two commercial ELISA kits (A and B), 177 patients were tested. The G6 ELISA had a significantly higher detection rate than either commercial ELISAs (19.21% 14.89% and 6.21%, respectively; <0.01, <0.05, respectively).

Keywords： hepatitis B virus     gene variation     hepatitis B surface antigen     immune escape     enzyme-linked immunosorbent assay    

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Title Author Date Type Operation

Determination of persistent organic pollutants by gas chromatography/laser multiphoton ionization/time-of-flightmass spectrometry

Osamu SHITAMICHI, Taiki MATSUI, Yamei HUI, Weiwei CHEN, Totaro IMASAKA

Journal Article

Peroxyacetyl nitrate measurements by thermal dissociation–chemical ionization mass spectrometry in an

Xinfeng Wang, Tao Wang, Likun Xue, Wei Nie, Zheng Xu, Steven C. N. Poon, Wenxing Wang

Journal Article

compounds in water using liquid-liquid microextraction coupled with gas chromatography—positive chemical ionization-tandemmass spectrometry

Jian LU,Paul S. WILLS,P. CHRIS WILSON

Journal Article

Comparative proteomic analysis of cold responsive proteins in two wheat cultivars with different tolerance to spring radiation frost

Shujuan ZHANG,Guoqi SONG,Yulian LI,Jie GAO,Jiao WANG,Guiju CHEN,Haosheng LI,Genying LI,Zhendong ZHAO

Journal Article

Etiology of invasive candidosis agents in Russia: a multicenter epidemiological survey

N.V. Vasilyeva, E.R. Raush, M.V. Rudneva, T.S. Bogomolova, A.E. Taraskina, Yong Fang, Fengmin Zhang, N.N. Klimko

Journal Article

Transient imaging with a time-of-flight camera and its applications

Jing-yu Lin, Ri-hui Wu, Hong-man Wang, Ye-bin Liu,jylin@gxu.edu.cn,liuyebin@tsinghua.edu.cn

Journal Article

several classes of antibiotics in water, sediments, and fish muscles by liquid chromatography–tandem mass spectrometry

WEI Yimei,ZHANG Yuan,XU Jian,GUO Changsheng,LI Lei,FAN Wenhong

Journal Article

Transient imaging with a time-of-flight cameraand its applications

Jing-yu LIN, Ri-hui WU, Hong-man WANG, Ye-bin LIU

Journal Article

An efficient resin for solid-phase extraction and determination by UPLCMS/MS of 44 pharmaceutical personal

Feng Zhu, Zhijian Yao, Wenliang Ji, Deye Liu, Hao Zhang, Aimin Li, Zongli Huo, Qing Zhou

Journal Article

Perfluorocarboxylic acids (PFCAs) and perfluoroalkyl sulfonates (PFASs) in surface and tap water around Lake Taihu in China

Yong QIU, He JING, Hanchang SHI,

Journal Article

Pyrolysis behaviors of oil sludge based on TG/FTIR and PY-GC/MS

Wei SONG, Jianguo LIU, Yongfeng NIE,

Journal Article

Photocatalytic degradation of methyl orange using ZnO/TiO composites

Ming GE , Changsheng GUO , Xingwang ZHU , Lili MA , Wei HU , Yuqiu WANG , Zhenan HAN ,

Journal Article

Analysis of Brucella cellular fatty acids

Zhen-Xiang ZHAO MS, Hai JIANG MD, Bu-Yun CUI MS, Hong-Yan ZHAO, Dong-Ri PIAO MS, Lan-Yu LI, Su-Zhen HAOMS,

Journal Article

taste and odor compounds in surface water using solid-phase extraction and gas chromatography-mass spectrometry

Wenfeng SUN, Ruibao JIA, Baoyu GAO

Journal Article

Preparation, identification, and clinical application of anti-HBs monoclonal antibody that binds both wild-type and immune escape mutant HBsAgs

Fanghe LI BM , Chunyan ZHANG MS , Jinghua LIU MS , Xiaoyan ZHANG MS , Bing YAN , Bo ZHANG MS , YongguoHUANG MS , Jingsong GONG BM , Yan CHEN BM ,

Journal Article