Journal of Analytical Chemistry最新文献

{"title":"Adsorption and Preconcentration of Anionic Azo Dyes on Nanomagnetite Modified with Cationic Polyelectrolytes","authors":"K. O. Kazimirova,&nbsp;S. N. Shtykov","doi":"10.1134/S1061934824701296","DOIUrl":"10.1134/S1061934824701296","url":null,"abstract":"<p>Magnetic nanoparticles of magnetite (MNPs) with surfaces modified by biocompatible cationic polyelectrolytes polyethyleneimine (PEI) and chitosan (CS) are synthesized by the chemical coprecipitation method. The magnetic nanoparticles were characterized by transmission electron microscopy and measurements of zeta (ζ) potential. The initial MNPs exhibit shapes close to spherical, with an average size of 10 ± 3 nm. The immobilization of a polyelectrolyte on the surface of MNPs results in the formation of aggregates with an interconnected porous network (shell) around individual particles with average sizes of 12 ± 2 nm for Fe₃O₄@PEI and 15 ± 2 nm for Fe₃O₄@CS, respectively. The effect of various experimental parameters, such as pH, extraction time, amount of adsorbent, and initial concentration of the dye, on the adsorption and desorption of food azo dyes Allura Red AC (E129) and Black Brilliant BN (E151) has been thoroughly investigated. The results demonstrate that, under optimal conditions, the recovery of these dyes from aqueous solutions reaches 96–100%, at a concentration factor of 2.7 × 10³ and adsorption capacities of 56 and 94 mg/g for Fe₃O₄@PEI, and 46 and 69 mg/g for Fe₃O₄@CS for E129 and E151, respectively. A comparison of the adsorption isotherms and kinetics of the process indicates that the Langmuir model and pseudo-second-order kinetics are preferable for describing the dye adsorption process. In the acidic and neutral pH ranges, electrostatic interactions primarily drive the adsorption process, while in the alkaline region, hydrogen bonding and hydrophobic interactions also play significant roles. The proposed adsorbents can be utilized for both the adsorption and preconcentration of the dyes in chemical analysis and the treatment of wastewaters for the dye removal. The preferred material for use is polyethyleneimine-modified nanomagnetite, which enables the adsorption and preconcentration of dyes across a wide pH range of 6–9.</p>","PeriodicalId":606,"journal":{"name":"Journal of Analytical Chemistry","volume":"79 12","pages":"1724 - 1732"},"PeriodicalIF":1.0,"publicationDate":"2024-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142821376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microextraction-Chromatographic Determination of Furan Derivatives in Transformer Oil","authors":"P. A. Godunov,&nbsp;A. Yu. Shishov,&nbsp;A. V. Bulatov","doi":"10.1134/S1061934824701375","DOIUrl":"10.1134/S1061934824701375","url":null,"abstract":"<p>A rapid and an environmentally friendly method is developed for the microextraction of furan derivatives from transformer oil for their determination by high-performance liquid chromatography with ultraviolet spectrophotometric detection. Various hydrophilic eutectic solvents were studied as extractants to implement vortex-assisted dispersive liquid–liquid microextraction. The results indicate that a three-component eutectic solvent composed of choline chloride, acetic acid, and water achieves the highest recoveries, ranging from 85 to 96%. The rapid spontaneous phase separation eliminated the need in centrifugation. Limits of detection (3σ) were achieved between 1 and 5 µg/L.</p>","PeriodicalId":606,"journal":{"name":"Journal of Analytical Chemistry","volume":"79 12","pages":"1800 - 1807"},"PeriodicalIF":1.0,"publicationDate":"2024-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142821380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Voltammetric DNA Sensors for the DNA Damage Detection Using Poly(Acridine Orange) Coatings Deposited from Reline and Glyceline","authors":"A. V. Porfireva,&nbsp;Z. F. Khusnutdinova,&nbsp;G. A. Evtyugin","doi":"10.1134/S1061934824701466","DOIUrl":"10.1134/S1061934824701466","url":null,"abstract":"<p>A voltammetric DNA sensor has been developed to detect DNA damage from calf thymus by measuring changes in redox signals in cyclic voltammograms of poly(Acridine Orange) (PAO) coatings. This polymer was synthesized on a carbon printed electrode from deep eutectic solvents—reline and glyceline—and a phosphate buffer solution. The optimal conditions for immobilizing DNA on each of the polymer coatings have been found. The effect of the polymerization medium on the electrochemical characteristics of the polyacridine dye layer and the polymer sensitivity to the thermal and oxidative damage of DNA has been identified. With the optimal composition of the surface layer the DNA sensor based on poly(Acridine Orange) synthesized from aqueous media (PAO1) reliably detected only chemical DNA oxidation. In contrast, the PAO synthesized from reline (PAO2) and glyceline (PAO3) demonstrated increased sensitivity to the incorporation of calf thymus DNA, which allows to discriminate between native, thermally denatured, and chemically oxidized DNA.</p>","PeriodicalId":606,"journal":{"name":"Journal of Analytical Chemistry","volume":"79 12","pages":"1887 - 1897"},"PeriodicalIF":1.0,"publicationDate":"2024-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142821492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Adsorption Preconcentration of Flavonoids on Ordered Mesoporous Silica Synthesized in the Presence of a Potential Adsorbate","authors":"A. S. Zavalyueva,&nbsp;S. I. Karpov,&nbsp;V. F. Selemenev","doi":"10.1134/S1061934824701259","DOIUrl":"10.1134/S1061934824701259","url":null,"abstract":"<p>The application of nanostructured adsorbents in sample preparation (extraction and preconcentration) of multicomponent mixtures in the solid-phase extraction of organic compounds is gaining significant interest. This study examines the adsorption properties of ordered mesoporous analogues of SBA-15, synthesized in the presence of quercetin as a potential adsorbate. The work explores the specific features of the adsorption-based recovery and preconcentration of quercetin, dihydroquercetin, naringin, and rutin under dynamic conditions from acetonitrile solutions using the breakthrough curve method. The use of the generalized optimization criterion of adsorption preconcentration <i>CE</i>, within the framework of the Venitsianov–Tsysin model of dynamic adsorption preconcentration, taking into account the limiting (mixed-diffusion) stage of adsorption kinetics, enabled the evaluation of the efficiency of the adsorption preconcentration of flavonoids on the studied adsorbents. The results demonstrate that the use of ordered silica synthesized in the presence of a potential adsorbate significantly enhances concentration efficiency compared to nonstructured silicas or unmodified SBA-15 analogue samples.</p>","PeriodicalId":606,"journal":{"name":"Journal of Analytical Chemistry","volume":"79 12","pages":"1694 - 1700"},"PeriodicalIF":1.0,"publicationDate":"2024-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142821495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Green Approach to Ammonia Determination in Human Saliva Using Natural Reagent via Gas-Diffusion Flow-Injection Spectrophotometry","authors":"Hermin Sulistyarti,&nbsp;Lani Artana Putri,&nbsp;Vira Suryani,&nbsp;Rurini Retnowati,&nbsp;Ulfa Andayani,&nbsp;Ani Mulyasuryani,&nbsp;Erwin Sulistyo,&nbsp;Muhammad Mashuri Utama","doi":"10.1134/S1061934824701314","DOIUrl":"10.1134/S1061934824701314","url":null,"abstract":"<p>A simple and cost-effective analytical approach is proposed based on a gas diffusion-flow injection procedure for determining ammonia in human saliva. The proposed procedure utilizes purple sweet potato extract as an acceptor reagent. The principle of determining ammonia is based on the total ammonia in saliva, which is transformed to ammonia gas in the NaOH donor stream, which diffuses through the gas diffusion membrane to the acceptor stream containing purple sweet potato extract. The presence of ammonia changed the color of the extract, which was detected at a wavelength of 604 nm, with absorbance proportional to the ammonia concentration. Optimization of standard parameters produced optimal results under 1.5 M NaOH, 10% extract, and 50 cm mixing coil with 300 μL sample volume. The results of the procedure were selective against phosphate, magnesium, and calcium, with less than a 5% bias value. The result was valid when applied to human saliva and supported by a 101–103% recovery. The proposed gas diffusion-flow injection procedure offers on-site assay and green chemical analysis with relatively high throughput.</p>","PeriodicalId":606,"journal":{"name":"Journal of Analytical Chemistry","volume":"79 12","pages":"1747 - 1756"},"PeriodicalIF":1.0,"publicationDate":"2024-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142821498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Batch-Injection Amperometric Determination of Sulfamethazine, Sulfacetamide, and Sulfathiazole on an Electrode Modified with a Composite of Gold Nanoparticles, Carbon Nanotubes, and an Ionic Liquid","authors":"L. G. Shaidarova,&nbsp;I. A. Chelnokova,&nbsp;M. A. Il’ina,&nbsp;I. A. Gafiatova,&nbsp;H. C. Budnikov","doi":"10.1134/S1061934824701454","DOIUrl":"10.1134/S1061934824701454","url":null,"abstract":"<p>Electrodes modified with gold particles, multi-walled carbon nanotubes, an ionic liquid based on 1-butyl-3-methylimidazolium hexafluorophosphate, and a composite derived from these materials have been developed for the voltammetric determination of sulfamethazine, sulfacetamide, and sulfathiazole. Cyclic voltammetry reveals that modifying the surface of a glassy carbon electrode with gold particles, a composite of carbon nanotubes, and an ionic liquid increases its effective surface area. Electrochemical impedance data indicate that the rate of electron transfer on the modified electrodes surpasses that on the unmodified ones. The composite electrode containing gold particles, carbon nanotubes, and the ionic liquid, exhibited the best performance, was utilized for the amperometric determination of sulfonamides in a batch-injection analysis system. Optimal parameters for the determination of sulfonamides in the batch-injection setup were found. The relationship between the analytical signal and the concentration of the compounds on the logarithmic coordinates is linear, ranging from 1 × 10^–8 to 5 × 10^–3 M for sulfamethazine and sulfacetamide, and from 1 × 10^–7 to 5 × 10^–3 M for sulfathiazole. The proposed method for determining sulfonamides has been tested in ananalysis of pharmaceutical preparations.</p>","PeriodicalId":606,"journal":{"name":"Journal of Analytical Chemistry","volume":"79 12","pages":"1878 - 1886"},"PeriodicalIF":1.0,"publicationDate":"2024-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142821352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Determination of Tianeptine Using Mg/Fe Layered Double Hydroxide-Based Dispersive Solid-Phase Extraction Combined with High-Performance Liquid Chromatography","authors":"Weiwei Yang","doi":"10.1134/S1061934824701399","DOIUrl":"10.1134/S1061934824701399","url":null,"abstract":"<p>The efficient extraction of tianeptine from environmental matrices has been a matter of concern issue due to the amphiphilic ionic organic substance property of tianeptine. A magnesium-iron layered double hydroxide (<b>Mg/Fe-LDH</b>) was successfully synthesized using hydrothermal synthesis and characterized by X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy techniques. The as-prepared nanocomposite was used as an effective adsorbent to extract tianeptine from water samples <i>via</i> a dispersive solid-phase extraction (<b>DSPE</b>) procedure before high-performance liquid chromatography-ultraviolet detection (<b>HPLC</b>-<b>UV</b>). Experimental parameters affecting extraction efficiency, such as agitation type, pH, absorbent amount, elution solvent type, and absorption/elution time, were studied and optimized. The developed tianeptine analysis method, based on adsorption-release extraction using Mg/Fe-LDH and detection by HPLC-UV, exhibited a wide quantitative linear range of 10 to 1000 μg/L (<i>r</i>² = 0.9986, <i>p</i> = 2.49 × 10^–14) by plotting chromatography peak height versus tianeptine concentration. The limits of detection and quantification were 4.6 and 15 μg/L, respectively. The developed tianeptine analysis method was applied to analyze tianeptine spiked in water samples. An ideal recovery range of 94.1 to 103.5%, with a narrow relative standard deviation of 1.63–4.34%, was obtained. The proposed analysis method, which combined Mg/Fe-LDH-based DSPE with HPLC-UV detection, was reliable for determining tianeptine in environmental water samples.</p>","PeriodicalId":606,"journal":{"name":"Journal of Analytical Chemistry","volume":"79 12","pages":"1818 - 1825"},"PeriodicalIF":1.0,"publicationDate":"2024-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142821398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Simple and Sensitive Imidazolium-Based Ionic Liquid-Modified Reversed-Phase Liquid Chromatography Method for the Simultaneous Determination of Beta-Blockers in Human Plasma Samples","authors":"Naflaa A. Aldawsari,&nbsp;Hassan M. AlBishri,&nbsp;Basmah H. Alshammari,&nbsp;Deia Abd El-Hady","doi":"10.1134/S1061934824701387","DOIUrl":"10.1134/S1061934824701387","url":null,"abstract":"<p>Beta-blockers (β-blockers) are broadly used to manage cardiac arrhythmia, which could increase in the upcoming years due to the aging population and the increase in the number of patients with cardiac burden. In the current work, a simple, sensitive, and reliable simultaneous determination of five β-blockers (acebutolol, pindolol, atenolol, nadolol, and oxprenolol) was accomplished by ionic liquid (<b>IL</b>)-modified reversed-phase liquid chromatography with ultraviolet detection. The chromatographic separation was achieved on a ZORBAX^® SB-C18 column using a hybrid mobile phase consisting of 50 µg/mL 1-butyl-3-methylimidazolium chloride dissolved in 0.02 mol/L phosphate buffer (pH 3.5) and acetonitrile (70 : 30, v/v). The chromatographic measurements were performed by isocratic elution at a 1.0 mL/min flow rate, 230 nm wavelength, and 25°C column temperature. The current method was applied to human plasma matrices by direct injection of samples with a short analysis time of 12 min. Good linearity was achieved in the range of 3–500 ng/L for atenolol, acebutolol, and pindolol, 7–500 ng/L for acebutolol, and 10–500 ng/L for oxprenolol with a 0.999 coefficient of determination. The limit of detection/limit of quantification values were 1.04/3.00, 2.75/7.00, 1.03/3.00, 1.05/3.00, and 3.47/10.00 ng/L for atenolol, nadolol, acebutolol, pindolol, and oxprenolol, respectively. Results of intra-day and inter-day precision were found to be less than 2%. The sensitivity enhancement factors of analytes due to the addition of IL ranged between 9- and 41-fold higher than that achieved in the absence of IL. Therefore, the proposed method could be used as a simple and sensitive analytical method for routine clinical analysis of β-blockers with the presence of a small amount of IL.</p>","PeriodicalId":606,"journal":{"name":"Journal of Analytical Chemistry","volume":"79 12","pages":"1808 - 1817"},"PeriodicalIF":1.0,"publicationDate":"2024-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142821382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pyridine-2,6-Dicarboxylic Acid Esters as Novel Ligands for Metal Extraction and Sensing","authors":"D. A. Kazanina,&nbsp;M. Yu. Alyapyshev,&nbsp;V. A. Polukeev,&nbsp;V. A. Babain,&nbsp;D. O. Kirsanov","doi":"10.1134/S1061934824701302","DOIUrl":"10.1134/S1061934824701302","url":null,"abstract":"<p>N,O-hybrid donor ligands are promising compounds for the isolation and separation of actinides and lanthanides from process solutions of spent nuclear fuel reprocessing. Newly synthesized N,O-hybrid donor ligands – derivatives of 2,6-pyridinedicarboxylic acid were studied as extractants and membrane components for potentiometric sensors. The extraction ability of solutions of these compounds in <i>meta</i>-nitrobenzotrifluoride towards d- and f-elements from nitric and perchloric acid solutions was investigated. It was shown that the replacement of amide groups with ester groups reduces the extraction ability of the ligands. Switching from nitric acid to perchloric acid gives a dramatic increase in extraction capacity due to the perchlorate effect. Also, a significant increase in extraction capacity is observed when chlorinated cobalt dicarbolide is added to the organic phase: the highest distribution coefficient is observed at a 1 : 1 ratio of extractant and additive concentrations. Potentiometric membrane sensors based on the new ligands showed significant sensitivity to Cd²⁺. Correlations between extraction and sensing behavior of new ligands were studied.</p>","PeriodicalId":606,"journal":{"name":"Journal of Analytical Chemistry","volume":"79 12","pages":"1733 - 1746"},"PeriodicalIF":1.0,"publicationDate":"2024-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142821499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of X-ray Spectral Analysis in Russia to Determine Chemical Elements in Medicinal Plants","authors":"E. V. Chuparina,&nbsp;A. G. Revenko","doi":"10.1134/S1061934824701247","DOIUrl":"10.1134/S1061934824701247","url":null,"abstract":"<p>Some methods of X-ray spectral analysis used by Russian researchers to determine the elemental composition of medicinal plants are considered. The review focuses on the articles published in Russian journals over the past 20 years. Researchers utilize wavelength dispersive X-ray fluorescence (WDXRF), energy dispersive XRF (EDXRF), synchrotron radiation XRF (SRXRF), and total reflection XRF (TXRF) spectrometry; electron probe microanalysis, and scanning electron microscopy to analyze both macro- and microelement contents in medicinal plants. The simultaneous determination of macro- and microelements, coupled with nondestructive sample preparation, makes XRF spectrometry an attractive method for identifying and monitoring the chemical composition of plants, especially those employed in medical practice. Most published studies provide comprehensive information on sample preparation and measurement procedures, present metrological evaluations, and discuss the results obtained. However, some publications lack essential methodological details, and misprints in the presented analytical data occur.</p>","PeriodicalId":606,"journal":{"name":"Journal of Analytical Chemistry","volume":"79 12","pages":"1679 - 1693"},"PeriodicalIF":1.0,"publicationDate":"2024-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142821496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}