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Ayman A Abdel Aziz et al.
Journal of fluorescence, 24(3), 859-874 (2014-02-13)
A very sensitive and reversible optical chemical sensor based on a novel tetradentate Schiff base namely N.N(/)bis(2-aminothiophenol)benzene-1,2-dicarboxaldehyde (ATBD) immobilized within a plasticized PVC film for Hg(2+) determination is described. At optimum conditions (i.e. pH 6.0), the proposed sensor displayed a
Grzegorz Lisak et al.
Analytica chimica acta, 877, 71-79 (2015-05-24)
Potentiometric sensing utilizing textile-based micro-volume sampling was applied and evaluated for the determination of clinically (Na(+), K(+), Cl(-)) and environmentally (Cd(2+), Pb(2+) and pH) relevant analytes. In this technological design, calibration solutions and samples were absorbed into textiles while the
Jiahong Lei et al.
Analytica chimica acta, 858, 60-65 (2015-01-20)
A flow injection system incorporated with a polycation-sensitive polymeric membrane electrode in the flow cell is proposed for potentiometric determination of heparin. An external current in nano-ampere scale is continuously applied across the polymeric membrane for controlled release of protamine
Yousef Abdossalami Asl et al.
Analytica chimica acta, 898, 42-49 (2015-11-04)
In the present research, an effective on chip electromembrane extraction (CEME) coupled with high performance liquid chromatography was presented for analysis of nortriptyline (NOR) and amitriptyline (AMI) as basic model analytes from urine samples. The chip consists of two polymethyl
Nor Akma Mamat et al.
Journal of chromatography. A, 1406, 34-39 (2015-07-05)
In this work, a new variation of the electromembrane extraction (EME) approach employing a hollow polymer inclusion membrane (HPIM) was developed. In this method, a HPIM was prepared by casting a solution of the desired proportions of cellulose acetate (CTA)
Evidence on the 2-nitrophenyl octyl ether (NPOE) facilitating Copper (II) transport through polymer inclusion membranes.
Wang D, et al.
Journal of Membrane Science , 501(1-2), 228-235 (2016)
Mona N Sweilam et al.
Biosensors & bioelectronics, 150, 111897-111897 (2019-12-02)
Flexible wearable chemical sensors are emerging tools which target diagnosis and monitoring of medical conditions. One of the potential applications of wearable chemical sensors is therapeutic drug monitoring for drugs that have a narrow therapeutic range such as lithium. We
Kim Granholm et al.
Analytica chimica acta, 888, 36-43 (2015-09-01)
A new method to convert the potential of an ion-selective electrode to concentration or activity in potentiometric titration is proposed. The advantage of this method is that the electrode standard potential and the slope of the calibration curve do not
Waleed Alahmad et al.
Analytica chimica acta, 1085, 98-106 (2019-09-17)
In this study, we developed and compared three different methods for chromium speciation in water samples using microfluidic paper-based analytical devices (μPADs). In all methods, detection was based on the complexation reaction of Cr(VI) with diphenylcarbazide on the μPADs. Cr(III)
Jiawang Ding et al.
Analytical chemistry, 86(19), 9412-9416 (2014-09-16)
Exposure to pathogens in recreational or drinking water is a serious public health concern. It is important to rapidly determine and identify trace levels of pathogens in real environmental samples. We report here on a label-free potentiometric aptasensor for rapid
Yousef Abdossalami Asl et al.
Journal of chromatography. A, 1419, 10-18 (2015-10-13)
In the present research, dynamic electromembrane extraction (DEME) was introduced for the first time for extraction and determination of ionizable species from different biological matrices. The setup proposed for DEME provides an efficient, stable, and reproducible method to increase extraction
Knut Fredrik Seip et al.
Journal of chromatography. A, 1347, 1-7 (2014-05-06)
Electromembrane extraction (EME) was performed on samples containing substantial amounts of NaCl to investigate how the presence of salts affected the recovery, repeatability, and membrane current in the extraction system. A group of 17 non-polar basic drugs with various physical
Ji Min Kim et al.
Analytica chimica acta, 877, 1-8 (2015-05-24)
The use of polyanion and polycation-sensitive membrane electrodes to detect five different preparations of fucoidan is described. Unlike linear polyanionic molecules previously measured with polymer membrane-based electrochemical sensors, fucoidans from marine brown algae are all highly branched, sulfated polysaccharides with
Standard Gibbs energies of ion transfer across the water? 2-nitrophenyl octyl ether interface.
Wilke S and Zerihun T
Journal of Electroanalytical Chemistry, 515(1-2), 52-60 (2001)
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