Analytical Chemistry News

Spectroscopy Study of the Interaction between Endocrine Disruptor 4-OH-2, 2', 3, 4'-BDE and Human Serum Albumin

RSC - Anal. Methods latest articles - Mon, 05/08/2017 - 05:39
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00419B, PaperZhi-Tiao Chen, Shuisheng Hu, XiaoYan He, Longhua Guo, Bin Qiu, Zhenyu Lin, Guonan Chen, Zongwei Cai
Hydroxylated polybrominated diphenyl ethers (OH-PBDEs), as one of the derivative of polybrominated diphenyl ethers (PBDEs), have received extensive concern recently. In this paper, the interaction of OH-PBDEs and human serum...
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Real-Time Assay of Inorganic Pyrophosphatase Activity in Red Region Based on Li+-doped NaYF4:Yb,Er Upconversion Luminescence Nanoparticles

RSC - Anal. Methods latest articles - Mon, 05/08/2017 - 04:37
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00444C, Paper Lei Wang, Yuan Ji, Yuezhen He, Lun Wang, Hongqi Chen
Li+-doped NaYF4:Yb,Er upconversion luminescence nanoparticles (UCLNPs) were synthesized and modified with poly(acrylic acid) (PAA). The luminescence of the carboxyl-functionalized UCLNPs at 664 nm was quenched in the presence of cupricion...
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Enabling lateral transport of genomic DNA through porous membranes for point-of-care applications

RSC - Anal. Methods latest articles - Fri, 05/05/2017 - 11:17

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY00293A, PaperSamantha A. Byrnes, Joshua D. Bishop, Paul Yager
Simultaneous cell lysis and DNA fragmentation to allow for controllable lateral transport of DNA through commonly-used porous membranes.
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Label-free fluorescence assay for rapid detection of RNase H activity based on Tb3+-induced G-quadruplex conjugates

RSC - Anal. Methods latest articles - Fri, 05/05/2017 - 07:16
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00709D, PaperKefeng Wu, Changbei Ma, Haisheng Liu, Hailun He, Weimin Zeng, Kemin Wang
Ribonuclease H (RNase H), a highly conserved damage-repaired protein, hydrolyzes RNA in DNA:RNA hybrid duplex and break RNA/DNA junctions. In this study, we demonstrated a unique Tb3+-based fluorescence assay that...
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A Coaxial Extractive Electrospray Ionization Source

RSC - Anal. Methods latest articles - Fri, 05/05/2017 - 07:16
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00835J, PaperKenneth D Swanson, Anne L Worth, Gary L Glish
An extractive electrospray ionizaton (EESI) source design is presented to improve the reproducibility of the interactions occurring in EESI. This design uses three concentric capillaries to deliver solvent, sample and...
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Design of a Ratiometric Fluorescent Probe for Naked Eye Detection of Dopamine

RSC - Anal. Methods latest articles - Fri, 05/05/2017 - 06:16
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00755H, PaperMohammad Reza Hormozi Nezhad, Mohammad Amin Farahmandnejad
A simple and effective ratiometric fluorescence sensor for selective detection of dopamine (DA) in alkaline media has been developed by simply mixing thioglycolic acid functionalized orange fluorescent cadmium telluride (CdTe)...
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DART-MS analysis of inorganic explosives using high temperature thermal desorption

RSC - Anal. Methods latest articles - Thu, 05/04/2017 - 14:11
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00867H, PaperThomas P Forbes, Edward Sisco, Matthew Edward Staymates, Greg Gillen
An ambient mass spectrometry (MS) platform coupling resistive Joule heating thermal desorption (JHTD) and direct analysis in real time (DART) was implemented for the analysis of inorganic nitrite, nitrate, chlorate,...
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Alkaline solubilization and ultrasound assisted extraction for Cr and Pb determination in leather by atomic absorption spectrometry

RSC - Anal. Methods latest articles - Thu, 05/04/2017 - 11:10
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00246G, PaperJunior Van Beik, Vitor Sena Kosera, Tatiane de Andrade Maranhao, Eduardo Sidinei Chaves
Alkaline solubilization with tetramethylammonium hydroxide (TMAH) and ultrasound-assisted extraction sample preparation procedures were evaluated for extraction and subsequent determination of Cr and Pb in leather samples by flame atomic absorption...
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A simple and efficient fluorescent probe for rapid detecting H2S in living cells and on agar gels

RSC - Anal. Methods latest articles - Thu, 05/04/2017 - 10:10
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00499K, PaperHaitao Li, Yaqian Li, Biao Gu, Wei Su, Xiaoli Duan, Hai Xu, Zhen Huang, Shouzhuo Yao
A simple fluorescent probe (E)-1,3,3-trimethyl-2-(4-morpholinostyryl)-3H-indol-1-ium iodide (Mi) based on intramolecular charge transfer (ICT) was synthesized. The probe can sense hydrogen sulphide (H2S) rapidly and sensitively with low detection limit (15...
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Chiral determination and assay of optical isomers in clandestine drug laboratory samples using LC-MSMS

RSC - Anal. Methods latest articles - Thu, 05/04/2017 - 10:10
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C6AY03125K, Technical NoteAna Popovic, Todd McBriar, Peter He, Alison Beavis
Many illicit drugs produced in clandestine laboratories exist as optical isomers, and due to their differing pharmacological properties, it is necessary to determine their respective amounts in a sample. Furthermore,...
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Sensitive Variables Extraction, Non-destructive Detection and Visualization of Total Viable Count (TVC) and pH in Vacuum Packaged Lamb Using Hyperspectral Imaging

RSC - Anal. Methods latest articles - Wed, 05/03/2017 - 11:02
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C6AY03321K, PaperHongwei Duan, Rongguang Zhu, Xuedong Yao, Elfed Lewis
The feasibility of hyperspectral imaging (HSI) for sensitive variables extraction, non-destructive detection and visualization of lamb total viable count (TVC) and pH was investigated. Regions of interest (ROIs) of pure...
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Encapsulation of enzyme into mesoporous cages of metal-organic frameworks for the development of highly stable electrochemical biosensors

RSC - Anal. Methods latest articles - Wed, 05/03/2017 - 08:01
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00710H, PaperWanwan Chen, Wensheng Yang, Yanluo Lu, Wanjun Zhu, Xu Chen
A water-stable metal-organic framework (MOF) [(PCN-333(Fe)] with ultra-large cavities and ultra-high porosity was synthesized, and employed to encapsulate horseradish peroxidases (HRP) for the fabrication of electrochemical biosensors. Due to the...
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Hydroxyl radical induced chemiluminescence of hyperbranched polyethyleneimine protected silver nanoclusters and its application in tea plolypehenols detection

RSC - Anal. Methods latest articles - Wed, 05/03/2017 - 08:01
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00903H, PaperShuang Zhao, Chen Chen, Zenghe Li, Zhiqin Yuan, Chao Lu
In this report, a simple approach for generating chemiluminescence (CL) of hyperbranched polyethyleneimine protected silver nanoclusters (hPEI-AgNCs) in solution by hydroxyl radical ([black circle]OH) was proposed. Emission of this CL system...
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Comparison of six derivatizing agents for the determination of nine synthetic cathinones using gas chromatography-mass spectrometry

RSC - Anal. Methods latest articles - Wed, 05/03/2017 - 07:00

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY00597K, PaperKhalid A. Alsenedi, Calum Morrison
Insight into mass spectrometry ions and derivatization conditions for synthetic cathinone type new psychoactive substances.
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AuPd bimetallic nanoparticles-supported carbon nanotubes for selective detection of dopamine in the presence of ascorbic acid

RSC - Anal. Methods latest articles - Wed, 05/03/2017 - 06:00
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00875A, PaperHaitang Yang, Dandan Liu, Xiaoyu Zhao, Jinghe Yang, Hai-Bo Chang, Ruimin Xing, Shanhu Liu
The carbon nanotubes-supported AuPd bimetallic nanoparticles (AuPd/CNTs) nanocomposite modified glassy carbon (GC) electrode was fabricated and their catalytic properties towards dopamine (DA) in the presence of ascorbic acid (AA) were...
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Porous stamp-based reagent patterning for lateral flow immunoassays

RSC - Anal. Methods latest articles - Tue, 05/02/2017 - 06:54

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY00744B, Technical NoteJessalyn Imdieke, Elain Fu
We present a novel method of stamping antibody patterns onto nitrocellulose for lateral flow assays.
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Rapid determination of impurity of boron nitride in amorphous boron powder using inductively coupled plasma-atomic emission spectrometry (ICP-AES) and ion chromatography(IC)

RSC - Anal. Methods latest articles - Tue, 05/02/2017 - 05:54
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00140A, PaperAbhay Yadav, Nitin Bulakh, Amit Gupta, Nirmala Sikder, Arun Kanti Sikder
Ever increasing use of amorphous boron powder (ABP) in high energy materials (HEMs) and allied composition has drawn attention for the frequent analysis of boron(B). Presence of nitrogen in inert...
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A sensitive and selective electrochemical nitrite sensor based on glassy carbon electrode modified with cobalt phthalocyanine-supported Pd nanoparticles

RSC - Anal. Methods latest articles - Mon, 05/01/2017 - 07:45
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01004D, PaperXueying Song, Li Gao, Yamin Li, Liqun Mao, Jing-He Yang
The cobalt phthalocyanine (Pd/CoPc) supported palladium nanoparticles composite materials are synthesized by using a facile methanol-mediated Weakly-Capping Growth Approach with anhydrous methanol as the mild reductant. Pd/CoPc nanorods have been...
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High Sensitivity Cysteine Detection Using a Novel Fluorescent Ag Nanocluster

RSC - Anal. Methods latest articles - Mon, 05/01/2017 - 05:45
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00310B, PaperHaomin Liu, Gang Mei, Shu Chen, Yun Fei Long
A fluorescent Ag nanocluster (AgNCs) stabilized by carboxymethyl dextran (CMD) was prepared by the photochemical reduction the mixture of CMD and [Ag(NH3)2]+ under ultraviolet C (UVC) light irradiation. Further study...
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Closed vessel microwave digestion of air filters for measurements of elemental iodine

RSC - Anal. Methods latest articles - Mon, 05/01/2017 - 05:45
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01017F, PaperDiane Ling Ying Tiong, Boon Kin Pong, Richard D Webster
An acid assisted closed vessel microwave digestion procedure was developed for the treatment of fine airborne particulate matter that allows elemental iodine to be solubilised simultaneously to other metallic elements....
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