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Ionic liquid-based air-assisted liquid-liquid microextraction combined with dispersive micro-solid phase extraction for the preconcentration of copper in water samples

Wed, 05/23/2018 - 22:52
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00800K, PaperWeimin Du, Li Yao, Jianfeng Bian, Yang Liu, Xie Wang, Jianhua Zhang, Liangyu Pang
Ionic liquid-based air-assisted liquid-liquid microextraction (IL-AALLME) combined with dispersive micro-solid phase extraction (D-[small mu ]-SPE) was applied for the extraction and preconcentration of Cu prior to analysis by graphite furnace atomic absorption...
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A label-free ultrasensitive and selective strategy for Pb(II) assay by a multifunctional DNA probe-mediated rolling-circle amplified synthesis of G-quadruplex

Wed, 05/23/2018 - 13:43
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00762D, PaperYong-Sheng Wang, Xiao-Feng Wang, Xilin Xiao, Wenbo Lan, Bin Zhou, Si-Han Chen, Jin-Hua Xue
We report a label-free ultrasensitive and selective strategy for Pb(II) assay by a multifunctional DNA probe (MDP)-mediated rolling-circle amplified synthesis of G-quadruplex. The MDP acted as a target recognition probe,...
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Examples of unwanted variation when characterising dissolved organic matter using direct injection electrospray mass spectrometry and chemometrics

Wed, 05/23/2018 - 10:36
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00226F, PaperNikoline Juul Nielsen, Peter Christensen, Colin Stedmon, Jan Christensen
We describe a methodology for comparing and contrasting a large number of dissolved organic matter samples based on their electrospray ionization mass spectral characteristics. The analytical process and especially the...
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Multi-waveform fast-scan cyclic voltammetry mapping of adsorption/desorption kinetics of biogenic amines and their metabolites

Tue, 05/22/2018 - 23:22
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00352A, PaperDo Hyoung Kim, Yoonbae Oh, Hojin Shin, Cheonho Park, Charles Blaha, Kevin E. Bennet, In Young Kim, Kendall H. Lee, Dong Pyo Jang
Fast-scan cyclic voltammetry (FSCV) is an effective method for investigating electro-active neurochemical species. In recent years, FSCV has been used to measure electro-active neurotransmitters in a variety of neuroscience studies....
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Resonance Rayleigh scattering detection of epidermal growth factor receptor based on aptamer-functionalized gold-nanoparticle probe

Tue, 05/22/2018 - 22:20
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00860D, PaperJunbo Li, Yanqiang Yang, Jinghua Wang, bing Zhang, Hong hong Chang, Wenlong Wei
In this study, gold nanoparticles (AuNPs) were modified by the epidermal growth factor receptor (EGFR) aptamer (Apt) to obtain functionalized Apt-AuNP nanoconjugate probe. The binding of EGFR to the Apt-AuNP...
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Production and Characterization of a Single-Chain Variable Fragment-Alkaline Phosphatase Fusion Protein for Glycocholic Acid Detection in a One-Step Enzyme-Linked Immunosorbent Assay

Tue, 05/22/2018 - 11:54
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00848E, PaperXiping Cui, Qiyi He, Ding Shen, Zhengyun Jiang, Yingshan Chen, Suqing Zhao, Bruce D. Hammock
A single-chain variable fragment (scFv)-alkaline phosphatase (AP) fusion protein for glycocholic acid (GCA) was produced and characterized. The scFv gene with a 218 linker was generated by splicing by overlap...
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Introducing integral optimised warping (IOW) approach for achieving swift alignment of drifted chromatographic peaks: An optimisation of correlation optimised warping (COW) technique

Tue, 05/22/2018 - 03:41
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00963E, PaperKeshav Kumar
The drift in the chromatographic peak position is an unavoidable problem that needs to be taken care before subjecting them to any data analysis work packages. The correction is essential...
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Polystyrene-Impregnated Paper Substrate for Direct Mass Spectrometric Analysis of Proteins and Peptides in Complex Matrices

Tue, 05/22/2018 - 00:39
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY01081A, PaperJin Li, Yajun Zheng, Wei Mi, Theoneste Muyizere, Zhiping Zhang
Direct analysis of proteins and peptides in complex matrices is of significant importance for biological, medicinal and toxicological studies. Paper spray mass spectrometry is a promising method for rapid determination...
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Quantification of combined color and shade changes in colorimetry and image analysis: Water pH measurement as an example

Tue, 05/22/2018 - 00:39
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00984H, PaperYing Wang, Yue Liu, Wen Liu, Wenhao Tang, Li Shen, Zhilin Li, Meikun Fan
Color-based analysis has been widely used in many resource-limited situations. However, one of the challenges for this type of application is to quantify the color information, especially when the color...
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Quantitative determination of multiple surfactants in water using HPLC-MS/MS

Fri, 05/18/2018 - 11:03

Anal. Methods, 2018, Advance Article
DOI: 10.1039/C8AY00240A, PaperXiaomeng Wang, Kim Kasperski
An analytical method has been developed to quantify multiple water-soluble process chemicals potentially used in the petroleum industry.
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Sensitive determination of L-hydroxyproline in dairy products by capillary electrophoresis with in-capillary optical fiber light-emitting diode-induced fluorescence detection

Thu, 05/17/2018 - 12:32

Anal. Methods, 2018, 10,2211-2216
DOI: 10.1039/C7AY02356A, PaperHongyun Ji, Xueyan Zhang, Feng Yang, Jiali Wang, Hongyan Yuan, Dan Xiao
A sensitive capillary electrophoretic method with in-capillary optical fiber light-emitting diode-induced fluorescence detection (ICOF-LED-IFD-CE) was developed for determination of L-Hyp and further for identification of hydrolyzed leather proteins in dairy products.
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Correcting the Effect of Hematocrit in Blood Coagulation Analysis on Paper-Based Lateral Flow Device

Thu, 05/17/2018 - 11:31
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00192H, PaperHua Li, Daewoo Han, Giovanni M. Pauletti, Michael Hegener, Andrew J. Steckl
A simple method to correct the effect of hematocrit (Hct) on a paper-based lateral flow assay (LFA) device that is designed to assess whole blood coagulation is reported. By quantifying...
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Aptameric detection of Quinine in reclaimed wastewater by using a personal glucose meter

Thu, 05/17/2018 - 06:25
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00585K, PaperYong Qiu, Chun-meing Gu, Bing Li, Hanchang Shi
The quantification of small molecule analyte in water environment remains expensive due to the high costs of instruments and human resources. Aptamer-invertase biosensor coupled with a personal glucose meter (PGM)...
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A facile colorimetric method for highly sensitive ascorbic acid detection by using CoOOH nanosheets

Wed, 05/16/2018 - 12:55
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00841H, PaperQiuyu Nie, Qiyong Cai, Huihui Xu, Shun Qiao, Zhaohui Li
In this work, based on a fast redox reaction between CoOOH nanosheets and AA, a very simple and highly sensitive colorimetric assay was developed to detect AA in buffer and...
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Hydrothermal synthesis of carbon quantum dots as fluorescent probes for sensitive and rapid detection of picric acid

Mon, 05/14/2018 - 12:52
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00441B, Paperyingte wang, xiaoyue chang, na jing, Yong Zhang
Heteroatom doping is an efficient approach to regulate the fluorescence properties of carbon nanodots. A novel water-soluble and high fluorescent nitrogen doped carbon dots were synthesized by effective hydrothermal method...
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Fluorescent carbon dots directly derived from Polyethyleneimine and their application for Detection of Co2+

Sun, 05/13/2018 - 22:35
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00481A, PaperBingyan Han, Ying Li, Tingting Peng, Mingbo Yu, Xixi Hu, Gaohong He
In this paper, polyethyleneimine (PEI) as a carbon source was designed to synthesize fluorescent carbon dots (CDs) with a facile and one-step hydrothermal route. Both the N-doping and the amino-functionalization...
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One pot hydrothermal synthesis amine-functionalized metal-organic framework/ reduced graphene oxide composites for electrochemical detection of bisphenol A

Fri, 05/11/2018 - 22:31
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00052B, PaperLi Jing Lin, JianHua Chen, Jingping Xu, Yan Hua Deng, Qian Peng, Ya Shan He, Yu Jing Nie
In this paper, Amine-functionalized metal-organic framework/reduced graphene oxide (NH2-MIL-125/RGO) was prepared by one-pot hydrothermal reaction,then was coated on the surface of a glassy carbon electrode (GCE). Transmission electron microscope, Raman...
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Detection of pulmonary surfactant protein A by using aptamer-based liquid crystal biosensor

Fri, 05/11/2018 - 10:22
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00326B, PaperYing Wang, Bing Wang, Qingli Zhang, Xingliang Xiong, Shixiong Deng
This paper reports a novel detection method for pulmonary surfactant protein A (SP-A) using aptamer-based liquid crystal (LC) biosensor. The LC molecules are supported on the surface of glass slide...
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Determination of chromium(VI) by anodic stripping voltammetry using a silver-plated glassy carbon electrode

Fri, 05/11/2018 - 09:22
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY01047A, PaperZorica S Stojanovic, Zuzana Koudelkova , Eliska Sedlackova, David Hynek, Lukas Richtera, Vojtech Adam
In this work, differential pulse anodic stripping voltammetry (DP-ASV) for the determination of trace amounts of hexavalent chromium (Cr(VI)) at a silver plated glassy carbon electrode (Ag plated-GCE) was described...
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Sprayed liquid-gas extraction of semi-volatile organophosphate Malathion from air and contaminated surfaces

Fri, 05/11/2018 - 08:17
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00636A, PaperMashaalah Zarejousheghani, Andreas Walte, Helko Borsdorf
In this study, a new air sampling method termed sprayed liquid gas extraction (SLGE) was developed for semi-volatile organic compounds. Water droplets with an average diameter of less than 10...
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