Analytical Chemistry News

Novel method of nicotine quantification in electronic cigarette liquids and aerosols

RSC - Anal. Methods latest articles - Mon, 06/19/2017 - 09:57
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00501F, PaperMumiye Ogunwale, Yizheng Chen, Whitney Theis, Michael H Nantz, Daniel Conklin, Xiaoan Fu
The electronic cigarette (e-cigarette) has emerged as popular electronic nicotine delivery devices (ENDs). However, the general safety and validity of e-cigarettes for nicotine delivery efficacy are still not well understood....
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Quantitation of Fentanyl Analogs in Dried Blood Spots by Flow-Through Desorption Coupled to Online Solid Phase Extraction Tandem Mass Spectrometry

RSC - Anal. Methods latest articles - Fri, 06/16/2017 - 09:20
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00532F, Technical NoteRebecca L Shaner, Nicholas D Schulze, Craig Seymour, Elizabeth I. Hamelin, Jerry D Thomas, Rudolph Johnson
An automated dried blood spot (DBS) elution coupled with solid phase extraction and tandem mass spectrometric analysis for multiple fentanyl analogs was developed and assessed. This method confirms human exposures...
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Competitive electrochemical biosensing of biotin using cadmium-modified titanium phosphate nanoparticles and 8-channel screen-printed disposable electrodes

RSC - Anal. Methods latest articles - Fri, 06/16/2017 - 07:20
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00947J, PaperDaniel Martin-Yerga, Javier Carrasco-Rodriguez, Francisco Javier Garcia Alonso, Agustin Costa-Garcia
In this work, a method for the detection of biotin was developed using a competitive electrochemical biosensor and cadmium-modified titanium phosphate nanoparticles (CdTiPNPs) as detection label. The electrochemical behaviour of...
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Simultaneous quantification of dopamine, acetaminophen and tyrosine at carbon paste electrode modified with porphyrin and clay

RSC - Anal. Methods latest articles - Fri, 06/16/2017 - 07:20
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01173C, PaperJustin Claude Kemmegne-mbouguen, Emmanuel Ngameni
A Cameroonian smectite clay collected in a deposit on Sabga hill (West Cameroon, Central Africa- denominated as Sa) and a metal free Meso-tetra(4-carboxyl phenyl) porphyrin (shortened as TCPP) were used...
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Fabrication of TiO2 and clay nanoparticles composite electrode as a sensor

RSC - Anal. Methods latest articles - Fri, 06/16/2017 - 07:20
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01068K, PaperShikandar D Bukkitgar, Nagaraj P Shetti
In the present work, a simple, selective, and sensitive electrochemical method for the determination of atrovostatin was proposed based on a composite electrode. The electrode was prepared using nano clay...
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Development of a HPLC-DAD method combined with multicomponent chemometrics and antioxidant capacity to monitor the quality consistency of Compound Bismuth Aluminate Tablets by comprehensive quantified fingerprint method

RSC - Anal. Methods latest articles - Thu, 06/15/2017 - 09:06
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00916J, PaperFangliang Yang, Guoxiang Sun, Jiao Chen
A high performance liquid chromatography (HPLC) coupled with diode array detector method was developed to monitor the quality consistency of a classical compound preparation, Compound Bismuth Aluminate tablet. Characteristic fingerprints...
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Easy ambient sonic-spray ionization mass spectrometry for tissue imaging

RSC - Anal. Methods latest articles - Thu, 06/15/2017 - 09:06

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY00858A, PaperRosana M. Alberici, Pedro H. Vendramini, Marcos N. Eberlin
Easy ambient sonic-spray ionization mass spectrometry (EASI-MS) can be applied for tissue imaging when the application of high voltage is impractical or undesirable.
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Evaluation of enhanced darkfield microscopy and hyperspectral analysis to analyse the fate of silver nanoparticles in wastewaters

RSC - Anal. Methods latest articles - Thu, 06/15/2017 - 07:05
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00615B, PaperTrevor Theoret, Kevin J Wilkinson
Nanomaterials are a class of emerging contaminants that are increasingly found in industry and the environment. In environmental media, their detection is often complicated by: their low concentration, the presence...
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Rapid Fluorescent Detection of Immunoglobulin E Using an Aptamer Switch Based on Binding-Induced Pyrene Excimer

RSC - Anal. Methods latest articles - Wed, 06/14/2017 - 14:59
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01308F, PaperYunlong Bai, Qiang Zhao
Immunoglobulin E (IgE) is an important immunoglobin related with allergic reactions and some diseases such as atopic dermatitis, allergic asthma, and etc. Sensitive and rapid detection of IgE is desired...
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Surface acoustic wave devices for chemical sensing and microfluidics: A review and perspective

RSC - Anal. Methods latest articles - Tue, 06/13/2017 - 11:46
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00690J, Critical ReviewDavid B. Go, Massood Atashbar, Zeinab Ramshani, Hsueh-Chia Chang
Surface acoustic waves (SAWs), are electro-mechanical waves that form on the surface of piezoelectric crystals. Because they are easy to construct and operate, SAW devices have proven to be versatile...
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Glutathione-S-Transferase catalyzed reaction of glutathione for electrochemical biosensing of Temephos, Fenobucarb and Dimethoate

RSC - Anal. Methods latest articles - Mon, 06/12/2017 - 08:34
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01258F, PaperHIMADRI BORAH, Rekha Rani Dutta, Sudarshan Gogoi, Tapas Medhi, Panchanan Puzari
This manuscript describes a sensitive bio-electrochemical detection method for extensively used toxic organophosphate pesticides temephos and dimethoate, and organocarbamate fenbucarb, by employing simple mediatorless cyclic voltammetric technique. The sensing scheme...
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Application of cysteamine-capped gold nanoparticles for early detection of lung cancer-specific miRNA (miR-25) in human blood plasma

RSC - Anal. Methods latest articles - Mon, 06/12/2017 - 07:34
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01098B, PaperAmineh Asadzadeh-Firouzabadi, Hamid Reza Zare
In this study, we designed a nanogenosensor based on cysteamine-capped gold nanoparticles (Cys-AuNPs) that makes it possible to detect the miRNA (miR-25) related to lung cancer. A single stranded probe...
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Drug Screening Method Development for Paper Spray Coupled to a Triple Quadrupole Mass Spectrometer

RSC - Anal. Methods latest articles - Mon, 06/12/2017 - 07:34
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01009E, PaperRachel Jett, Christine Skaggs, Nicholas Manicke
Paper spray mass spectrometry is a direct analysis method in which compounds are extracted and ionized from biofluids dried on paper. It is an attractive option for performing rapid drug...
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Optimisation of in vitro sample preparation for LC-MS metabolomics applications on HepaRG cell cultures

RSC - Anal. Methods latest articles - Mon, 06/12/2017 - 05:34

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY00573C, PaperMatthias Cuykx, Olivier Mortele, Robim M. Rodrigues, Tamara Vanhaecke, Adrian Covaci
The addition of stabilizers during liquid-liquid extraction improves the precision of untargeted LC-MS metabolomics workflows.
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Determination of chlorine in plastic by isotope dilution inductively coupled plasma mass spectrometry

RSC - Anal. Methods latest articles - Fri, 06/09/2017 - 06:04
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01065F, Technical NoteMasaki Ohata, Ayaka Wada
The determination of chlorine (Cl) in plastic by isotope dilution inductively coupled plasma mass spectrometry (ID-ICPMS) coupled with different sample pretreatment procedures was examined in the present study. In order...
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Using porcine bone marrow to analyze fenproporex and its metabolite amphetamine for forensic toxicological purposes: method development and validation

RSC - Anal. Methods latest articles - Fri, 06/09/2017 - 05:03
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00807D, PaperElisangela Santos, ELIANI SPINELLI, Francisco Aquino Neto, SILVANA VIANNA RODRIGUES
The possibility of detecting drugs of abuse in bone marrow represents an important issue in forensic toxicology. Bone marrow is an alternative matrix for cases in which the matrices commonly...
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Pulsed probe electrospray and nano-electrospray: the temporal profiles of ion formation from the Taylor cone

RSC - Anal. Methods latest articles - Thu, 06/08/2017 - 07:51
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01275F, PaperDilshadbek Tursunbayevich Usmanov, Kenzo Hiraoka, Satoshi Ninomiya, Lee Chuin Chen, Hiroshi Wada, Masaya Matsumura, Sachiyo Sanada-Morimura, Keisuke Nakata, Hiroshi Nonami
The temporal profiles of the ion signals were measured for probe electrospray ionization (PESI) and nano-electrospray ionization (nESI) by changing the pulse width of high voltage applied to the emitters...
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Fluorescence detection of vitamin B12 in human plasma and urine samples using silver nanoparticles embedded into chitosan in micellar media

RSC - Anal. Methods latest articles - Thu, 06/08/2017 - 07:51
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01297G, PaperNahid Pourreza, Roya Mirzajani, jafar burromandpiroze
Herein, a novel fluorescence method has been developed for the determination of vitamin B12 .The method is based on the interaction of vitamin B12 with silver nanoparticles embedded in chitosan...
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Determination of heavy metals in cigarettes using high-resolution continuum source graphite furnace atomic absorption spectrometry

RSC - Anal. Methods latest articles - Wed, 06/07/2017 - 11:44
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00930E, PaperTing Ren, Xi Chen, Yao Ge, Lijiao Zhao, ru-gang zhong
Heavy metal contamination induced by cigarette smoking is a critical issue in environmental pollution and human health risk. Although a number of investigations have been performed on the detection of...
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Fluorescence Zn-Based Metal-Organic Frameworks for the Detection Hydrogen Sulfide in Natural Gas

RSC - Anal. Methods latest articles - Wed, 06/07/2017 - 09:43
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01193H, PaperRongcai Song, Lin Hou, Yuanyuan Wang, Yanyan Li, Xuesong Wang, Yuxi Zang, Yunong Zang, Xiangcheng Wang, Shuguang Yan
Fluorescence zinc-based metal-organic frameworks (Zn-MOF) were synthesized via the solvothermal method. The materials were characterized by scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy,...
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