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Source: Talanta
Drug: Acetic Acid
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Total 96 results found since Jan 2013.
Electrochemiluminescence enhanced by isolating ACQphores in imine-linked covalent organic framework for organophosphorus pesticide assay
Talanta. 2023 Jul 19;266(Pt 1):124964. doi: 10.1016/j.talanta.2023.124964. Online ahead of print.ABSTRACTMost of covalent organic frameworks (COFs) are non or weakly emissive due to either the molecular thermal motion-mediated energy dissipation or the aggregation-caused quenching (ACQ) effect. Herein, we synthesize an imine-linked COF (TFPPy-TPh-COF) with high electrochemiluminescence (ECL) emission and the capability of eliminating the ACQ effect and further construct an ECL sensor for malathion detection. The imine-linked COF is obtained by the condensation reaction of (1,1':3',1″-terphenyl)-4,4″-diamine (TPh) and 1...
Source: Talanta - July 23, 2023 Category: Chemistry Authors: Linlin Song Qian Zhang Lei Min Xinyu Guo Wenqiang Gao Lin Cui Chun-Yang Zhang Source Type: research
Accurate determination of the milk protein allergen β-lactoglobulin by on-line aptamer affinity solid-phase extraction capillary electrophoresis-mass spectrometry
Talanta. 2023 Apr 14;259:124542. doi: 10.1016/j.talanta.2023.124542. Online ahead of print.ABSTRACTAn on-line aptamer affinity solid-phase extraction capillary electrophoresis-mass spectrometry (AA-SPE-CE-MS) method was developed to purify, preconcentrate, separate, and characterize the milk allergenic protein β-lactoglobulin (β-LG) in food samples. The sorbent to pack into the SPE microcartidges was prepared by immobilizing an aptamer against β-LG onto magnetic bead particles. After optimizing the SPE-CE-MS method, the sample (ca. 75 μL) was loaded in separation background electrolyte (BGE, 2 M acetic acid pH 2.2), wh...
Source: Talanta - April 22, 2023 Category: Chemistry Authors: Mar ía Vergara-Barberán Ernesto Francisco Sim ó-Alfonso Jos é Manuel Herrero-Martínez Fernando Benavente Source Type: research
Ultra-sensitive, rapid detection of dried bloodstains by surface enhanced Raman scattering on Ag substrates
Talanta. 2023 Apr 7;259:124535. doi: 10.1016/j.talanta.2023.124535. Online ahead of print.ABSTRACTA simple water extraction and transfer procedure is found to result in reproducible and highly sensitive 785 nm excited SERS spectra of 24 h dried bloodstains on Ag nanoparticle substrates. This protocol allows confirmatory detection and identification of dried stains of blood that have been diluted by up to 105 in water on Ag substrates. While previous SERS results demonstrated similar performance on Au substrates when a 50% acetic acid extraction and transfer procedure was used, the water/Ag methodology avoids any potential ...
Source: Talanta - April 13, 2023 Category: Chemistry Authors: C Suarez W R Premasiri H Ingraham A N Brodeur L D Ziegler Source Type: research
Innovated single flush on-line solid-phase extraction in bead injection format for flow programming-based determination of creatinine in human urine
Talanta. 2023 Mar 7;258:124420. doi: 10.1016/j.talanta.2023.124420. Online ahead of print.ABSTRACTReaction-based assays are commonly automated and miniaturized via flow analysis. However, aggressive reagents can affect or destroy even the chemically resistant manifold during long-term use. Using on-line solid-phase extraction (SPE) can eliminate this drawback and allow for high reproducibility and further advanced automation, as presented in this work. Determination of creatinine in human urine, an important clinical marker, by sequential injection analysis was achieved using bead injection on-line SPE with specific UV spe...
Source: Talanta - March 12, 2023 Category: Chemistry Authors: Petr Chocholou š Jan Vinkl árek Eva Semer ádová Yuliia Miekh Graham D Marshall Petr Solich Source Type: research
Development of an analytical chip for colorimetric detection of medium-chain aldehydes by reaction with pararosaniline in porous glass
In this study, an analytical chip is developed for the detection of medium-chain aldehydes without interference from short-chain aldehydes. This analytical chip is composed of porous glass impregnated with pararosaniline and an acid (i.e., acetic acid with small amount of phosphoric acid). After exposure to medium-chain aldehydes, the red analytical chip became violet in color, and an absorption peak was observed at 620 nm. It was found that a non-reversible reaction occurred in the porous glass, therefore, the analytical chip functions in a cumulative manner. A linear relationship was determined between the absorbance cha...
Source: Talanta - February 23, 2023 Category: Chemistry Authors: Yasuko Y Maruo Naoto Kawamura Natsumi Abe Source Type: research
Development of a non-titration potentiometric method for the determination of acidity in vinegar
Talanta. 2023 Jan 12;256:124261. doi: 10.1016/j.talanta.2023.124261. Online ahead of print.ABSTRACTThe acidity of a solution is associated with the concentration of Brønsted acids. This work proposes a new non-titrimetric potentiometric method using citrate buffer for the determination of vinegar acidity. The difference between the pH values before and after the addition of a diluted vinegar sample to 10 mmol L-1 citrate buffer (pH 5.5) was related to the acetic acid concentration. The dynamic range of the quadratic analytical curve was from 3.5 to 20 mmol L-1 (R2 = 0.998). The repeatability was 0.8% for acetic acid at 0....
Source: Talanta - January 15, 2023 Category: Chemistry Authors: N S Oliveira A F Oliveira A A Neves M E L R Queiroz Source Type: research
In situ electrodeposition of bismuth oxide nanowires @MWNT on the carbon fiber microelectrode for the sensitively electrochemical detection of folic acid
Talanta. 2022 Sep 17;253:123944. doi: 10.1016/j.talanta.2022.123944. Online ahead of print.ABSTRACTA microminiaturized electrochemical device, BiO@CNW/CFE was fabricated based on the in situ co-electrodeposition of bismuth oxide nanowires (BiNWs) and multi-walled carbon nanotubes (MWNTs) on the surface of carbon fiber electrode (CFE). The nanostructure of BiNWs could bind MWNTs on the surface of CFE during the precipitation of bismuth at the potential of -1.1 V. The vimineous nanostructure of BiO@CNW improved the surface area and electrochemical activity of the microelectrode. With the low background noise, folic acid (FA)...
Source: Talanta - October 6, 2022 Category: Chemistry Authors: Yanxue Xu Jianming Li Zirui Meng Guihua Chen Binwu Ying Dan Xiao Source Type: research
Comprehensive quantitative method for neurotransmitters to study the activity of a sedative-hypnotic candidate using microdialysis and LC ×LC-MS/MS
In this study, we developed a high-throughput quantitative method based on a two-dimensional chromatography-mass spectrometry technique to simultaneously analyze 63 NTs and their metabolites in rat plasma, brain homogenate, and microdialysis samples from five different sleep-associated regions of the brain. Moreover, this method was used to study the neurochemical mechanism of an adenosine analog sedative-hypnotic candidate YZG-331. Most of the correlations between NTs were lost after the administration of the sedative, particularly in the caudate putamen (CPu) and dorsal raphe nucleus (DRN), indicating that the sleep-wake...
Source: Talanta - April 26, 2022 Category: Chemistry Authors: Yanhua Chen Qianlun Pu Fengting Yu Xian Ding Yu Sun Qinglan Guo Jiangong Shi Jianjun Zhang Zeper Abliz Source Type: research
