Journal of Analytical Chemistry最新文献_第2页

Detection of Melittin, a Characteristic Peptide of Bee Venom, in Semisolid Dosage Forms Using Liquid Chromatography–High-Resolution Mass Spectrometry 液相色谱-高分辨率质谱法检测半固体剂型蜂毒的特征肽蜂毒素

IF 1.1 4区化学

Journal of Analytical Chemistry Pub Date : 2025-09-23 DOI: 10.1134/S1061934825700789

M. F. Vokuev, A. Yu. Oprunenko, A. V. Frolova, T. M. Baygildiev, I. A. Rodin

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Determination of Antibiotics in Wastewaters Using Amperometric Sensors 用安培传感器测定废水中的抗生素

IF 1.1 4区化学

Journal of Analytical Chemistry Pub Date : 2025-09-23 DOI: 10.1134/S1061934825700790

Pham Thi Gam, O. A. Tertyshnikova, A. N. Zyablov, A. Yu. Vyborny, N. A. Litvinova

{"title":"Determination of Antibiotics in Wastewaters Using Amperometric Sensors","authors":"Pham Thi Gam, O. A. Tertyshnikova, A. N. Zyablov, A. Yu. Vyborny, N. A. Litvinova","doi":"10.1134/S1061934825700790","DOIUrl":"10.1134/S1061934825700790","url":null,"abstract":"Sensors are developed for the amperometric determination of the antibiotics Cefur and Ceftr in aqueous solutions. The sensor electrodes were coated with a molecularly imprinted polymer (MIP). To assess the selectivity and molecular recognition ability of the sensors, the imprinting factor and selectivity coefficient were determined. The imprinting factor reached 5.3 for MIP-Cefur and 5.1 for MIP-Ceftr. The results demonstrated that the MIPs exhibited higher selectivity and recognition capability for Cefur and Ceftr compared to non-imprinted polymers. The antibiotics were quantified in aqueous solutions using the calibration curve method. The experimentally found concentration ranges for Cefur and Ceftr were from 1.0 × 10–5 to 0.1 g/L. The limits of detection were 3.5 × 10–6 g/L for Cefur and 6.6 × 10–6 g/L for Ceftr. MIP-modified sensors were tested in the determination of antibiotics in wastewaters. The findings confirmed the applicability of amperometric sensors based on molecularly imprinted polymers to the determination of Cefuroxime sodium and Ceftriaxone sodium in both model and real aqueous solutions.","PeriodicalId":606,"journal":{"name":"Journal of Analytical Chemistry","volume":"80 :","pages":"1582 - 1587"},"PeriodicalIF":1.1,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145122328","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}

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Determination of Endocrine Disruptors in Bottom Sediments by Gas Chromatography–Mass Spectrometry with Analyte Preconcentration by Liquid–Liquid and Magnetic Dispersive Solid-Phase Extraction 气相色谱-质谱联用液-液-磁分散固相萃取法测定海底沉积物中内分泌干扰物

IF 1.1 4区化学

Journal of Analytical Chemistry Pub Date : 2025-09-23 DOI: 10.1134/S1061934825700777

A. S. Gubin, K. S. Sypko, A. A. Kushnir, P. T. Sukhanov

{"title":"Determination of Endocrine Disruptors in Bottom Sediments by Gas Chromatography–Mass Spectrometry with Analyte Preconcentration by Liquid–Liquid and Magnetic Dispersive Solid-Phase Extraction","authors":"A. S. Gubin, K. S. Sypko, A. A. Kushnir, P. T. Sukhanov","doi":"10.1134/S1061934825700777","DOIUrl":"10.1134/S1061934825700777","url":null,"abstract":"A method is proposed for the extraction and preconcentration of six of the most common endocrine disruptors (dimethyl, diethyl, dibutyl phthalates; bisphenol A; and octyl- and nonylphenols) from river bottom sediments. The analytes are extracted by two-stage preconcentration. At the first stage, the analytes are extracted from an aqueous solution with an ionic liquid, 1-hexyl-3-methylimidazolium hexafluorophosphate in the presence of a surfactant (sodium dodecyl sulfate). The volumes of the extractant and surfactant solution (12 vol %) are 200 μL and 0.5 mL, respectively. Extraction duration is 2 min. At the second stage, magnetic dispersive solid-phase extraction with magnetic coals of plant origin modified with reversed phases of n-octyltrimethoxysilane and n-octadecyltrimethoxysilane is used. The recovery of analytes by liquid–liquid extraction is 91–99% and by magnetic solid-phase dispersive extraction, 89–99%. It is found that, during solid-phase dispersive extraction, the best conditions for the extraction of disruptors are achieved at pH 5.2–7.0, sorption duration of 5 min using a centrifuge (4000 rpm), and sorbent portion of 25 mg. The use of two-stage preconcentration in combination with gas chromatography–mass spectrometry ensures the determination of endocrine disruptors in bottom sediments at a level of 0.4–0.7 μg/kg.","PeriodicalId":606,"journal":{"name":"Journal of Analytical Chemistry","volume":"80 :","pages":"1561 - 1574"},"PeriodicalIF":1.1,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145122412","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}

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A Single Microfluidic Paper-Based Analytical Device for the Determination of Ammonia and pH Using Mulberry Fruit Extract as a Natural Indicator 以桑果提取物为天然指示剂的单微流控纸分析装置测定氨和pH

IF 1.1 4区化学

Journal of Analytical Chemistry Pub Date : 2025-08-19 DOI: 10.1134/S1061934825600854

Piyawan Phansi, Kodchakorn Inthichit, Mongkol Trongdee, Natcha Kaewkong, Duangjai Nacapricha

{"title":"A Single Microfluidic Paper-Based Analytical Device for the Determination of Ammonia and pH Using Mulberry Fruit Extract as a Natural Indicator","authors":"Piyawan Phansi, Kodchakorn Inthichit, Mongkol Trongdee, Natcha Kaewkong, Duangjai Nacapricha","doi":"10.1134/S1061934825600854","DOIUrl":"10.1134/S1061934825600854","url":null,"abstract":"This work presents a microfluidic paper-based analytical device (µPAD) designed for the screening and measurement of ammonia and pH, utilizing mulberry fruit extract as a natural indicator. For ammonia determination, the method is based on a membraneless gas-separation microfluidic device. The µPAD co-nsists of three layers: the upper layer serves as the detection area, featuring two circles with a diameter of 8 mm, where mulberry fruit extract at pH 3.07 and pH 4.93 is applied for the measurement of ammonia and pH, respectively. Ammonia gas is generated in the lower donor layer and diffuses through the gap in the middle layer to the acceptor layer. The concentration of ammonia is determined by analyzing the color change of the mulberry fruit extract indicator. Images of the colored detection zones are captured using a smartphone camera, and their color intensity is analyzed with ImageJ software. For pH measurement, the color change is compared to a standard pH scale ranging from 1 to 14. The proposed method offers a linear calibration range from 0 to 150 mg/L N, with a limit of detection of 4.89 mg/L N. The relative standard deviation was 3.43% (at 50 mg/L N, n = 10). This method was successfully applied to measure ammonia and pH in natural water, pond water, wastewater, and fertilizer samples, with recovery rates ranging from 95 to 109%. The results obtained from the µPAD correlated well with those from the spectrophotometric method for ammonia and a pH meter for pH values.","PeriodicalId":606,"journal":{"name":"Journal of Analytical Chemistry","volume":"80 8","pages":"1411 - 1421"},"PeriodicalIF":1.1,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868791","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}

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Determination of Iodine in CsGeI3 by Inductively Coupled Plasma Atomic Emission Spectrometry 电感耦合等离子体原子发射光谱法测定CsGeI3中的碘

IF 1.1 4区化学

Journal of Analytical Chemistry Pub Date : 2025-08-19 DOI: 10.1134/S1061934825700698

Sun Haifeng, Li Tian, Xu Qing, Zhang Lijiu

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Indirect Spectrophotometric Method for the Determination of Dimethoate and Oxydemeton-Methyl Insecticides in Environmental Samples 间接分光光度法测定环境样品中乐果和甲氧咪酮杀虫剂

IF 1.1 4区化学

Journal of Analytical Chemistry Pub Date : 2025-08-19 DOI: 10.1134/S1061934825700686

Nisha Sharma, Srishti Shekhar

{"title":"Indirect Spectrophotometric Method for the Determination of Dimethoate and Oxydemeton-Methyl Insecticides in Environmental Samples","authors":"Nisha Sharma, Srishti Shekhar","doi":"10.1134/S1061934825700686","DOIUrl":"10.1134/S1061934825700686","url":null,"abstract":"Insecticides like dimethoate and oxydemeton-methyl are essential for crop protection, supporting food production. However, their overuse raises environmental and food safety concerns due to contamination and residues. A new spectrophotometric method was developed to monitor these insecticides in formulations and environmental samples such as water, grains, and vegetables. The proposed method is based on the redox reaction of the thiol (the hydrolytic product formed in an alkaline medium) in both insecticides, with ferric chloride, leading to the formation of Fe2+, which subsequently reacts with 1,10-phenanthroline to form colored complexes, measurable at 510 nm. The method obeys Beer’s law within the concentration ranges of 0.46–13.74 µg/mL for dimethoate and 0.49–14.76 µg/mL for oxydemeton-methyl. Reaction parameters such as hydrolysis time, solvent type, heating time, and reagent concentration were optimized to enhance the sensitivity and stability of the method. The recovery results from water and environmental samples demonstrated the good accuracy and precision of the method, with recoveries of 89–100.8% for dimethoate and 89.9–99% for oxydemeton-methyl, and a relative standard deviation of 0.29–1.96 and 0.23–1.91% for dimethoate and oxydemeton-methyl, respectively.","PeriodicalId":606,"journal":{"name":"Journal of Analytical Chemistry","volume":"80 8","pages":"1434 - 1444"},"PeriodicalIF":1.1,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868793","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}

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Assessment of In Situ Sorbent Formation Solid-Phase Extraction for the Determination of Cadmium in Natural Water Samples and Plant Leaves by Flame Atomic Absorption Spectrometry 原位吸收剂形成固相萃取法测定天然水样和植物叶片中镉的评价

IF 1.1 4区化学

Journal of Analytical Chemistry Pub Date : 2025-08-19 DOI: 10.1134/S1061934825601136

Mohammad Reza Jamali, Saeed Khaleghi-Gorji, Reyhaneh Rahnama

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Applications of Smart Materials in Sample Preparation for Biological and Environmental Analysis 智能材料在生物和环境分析样品制备中的应用

IF 1.1 4区化学

Journal of Analytical Chemistry Pub Date : 2025-08-19 DOI: 10.1134/S1061934825700595

D. A. Karpitskiy, L. A. Kartsova

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Microextraction Separation and Determination of Inorganic Arsenic Species by Inductively Coupled Plasma Mass Spectrometry in Natural Waters 自然水体中无机砷的微萃取分离及电感耦合等离子体质谱测定

IF 1.1 4区化学

Journal of Analytical Chemistry Pub Date : 2025-08-19 DOI: 10.1134/S1061934825700613

Z. A. Temerdashev, P. G. Abakumov, A. G. Abakumov, M. A. Bol’shov

{"title":"Microextraction Separation and Determination of Inorganic Arsenic Species by Inductively Coupled Plasma Mass Spectrometry in Natural Waters","authors":"Z. A. Temerdashev, P. G. Abakumov, A. G. Abakumov, M. A. Bol’shov","doi":"10.1134/S1061934825700613","DOIUrl":"10.1134/S1061934825700613","url":null,"abstract":"The results of microextraction separation and ICP–MS determination of inorganic arsenic species in natural waters are presented. The necessity of the separate quantification of analytes is justified, as arsenites exhibit toxicity dozens of times higher than arsenates. Separation was performed by the selective liquid–liquid microextraction of As(III) complexes with sodium diethyldithiocarbamate into an organic phase. Extraction conditions were optimized to achieve the highest recovery of As(III) complexes at approximately 95%. The As(III) complexes with sodium diethyldithiocarbamate were extracted into the organic phase using carbon tetrachloride as an extractant and methanol as a dispersant. Matrix effects of elements on analyte extraction from water were eliminated by performing a double microextraction of the analytes. Total inorganic arsenic and As(V) concentrations were determined by an ICP–MS analysis of the original water samples and their aqueous extracts obtained after the separation of inorganic arsenic species. The concentration of As(III) in water was calculated as the difference between total arsenic and As(V) concentrations. The limits of detection for As(III) and As(V) in water were equal, at 0.010 μg/L, within a linearity range of 0.05 to 100 μg/L, R2 = 0.9998. The accuracy of the determination of inorganic arsenic species in water was confirmed by the standard addition method. The analytical procedure was validated using model waters and real samples of drinking and natural waters.","PeriodicalId":606,"journal":{"name":"Journal of Analytical Chemistry","volume":"80 8","pages":"1345 - 1353"},"PeriodicalIF":1.1,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868741","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}

引用次数: 0

Quantification of Phenolic Compounds in Different Tissues and Juice of Satsuma Mandarin Fruit by High-Performance Liquid Chromatography 高效液相色谱法测定柑桔不同组织及汁液中酚类化合物含量

IF 1.1 4区化学

Journal of Analytical Chemistry Pub Date : 2025-08-19 DOI: 10.1134/S1061934825600623

Luna Maslov Bandić, Kristina Vlahoviček-Kahlina, Slaven Jurić, Marija Sigurnjak Bureš

{"title":"Quantification of Phenolic Compounds in Different Tissues and Juice of Satsuma Mandarin Fruit by High-Performance Liquid Chromatography","authors":"Luna Maslov Bandić, Kristina Vlahoviček-Kahlina, Slaven Jurić, Marija Sigurnjak Bureš","doi":"10.1134/S1061934825600623","DOIUrl":"10.1134/S1061934825600623","url":null,"abstract":"This study investigates the distribution and quantification of phenolic compounds in different tissues (juice, pulp, and peel) of six Satsuma mandarin (Citrus unshiu) varieties cultivated in Croatia. Narirutin and hesperidin were the dominant flavonoids in mandarin juice and pulp, with the highest concentrations observed in the “Okitsu” variety. Peel samples exhibited a higher flavonoid content, particularly hesperidin and polymethoxylated flavones, such as nobiletin and tangeretin. Extractable and bound phenolic acids, including ferulic, caffeic, and p-coumaric acids, were quantified. The “Okitsu” variety showed the highest levels of most phenolic acids. The optimized high-performance liquid chromatography method demonstrated high precision and sensitivity, enabling efficient quantification of 18 phenolic compounds. This study provides valuable insights into the phenolic composition of Satsuma mandarins, contributing to citrus quality assessment, dietary applications, and sustainable utilization of citrus waste.","PeriodicalId":606,"journal":{"name":"Journal of Analytical Chemistry","volume":"80 8","pages":"1461 - 1470"},"PeriodicalIF":1.1,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144869125","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}

引用次数: 0