Chinese Journal of Analytical Chemistry最新文献_第7页

Corrigendum to “A pilot study on the mechanism of Guasha in treating Parkinson's disease based on molecular level and ultra-trace proteomics analysis” [Chinese Journal of Analytical Chemistry 52 (2024) 1–14/100402] 基于分子水平和超痕量蛋白质组学分析的刮痧治疗帕金森病机制的试验研究》[《中国分析化学杂志》52 (2024) 1-14/100402] 勘误表

IF 1.2 4区化学

Chinese Journal of Analytical Chemistry Pub Date : 2024-11-25 DOI: 10.1016/j.cjac.2024.100455

Qiuqin WANG , Li ZHANG , Heng WENG , Qing WANG , Penglu CHEN , Hua CHEN , Rongrong JIANG , Guihua XU , Yamei BAI , Xi CHEN

引用次数: 0

A highly selective and sensitive carbazole-based fluorescent probe for peroxynitrite detection and cellular imaging 一种高选择性、高灵敏度的咔唑基荧光探针，用于过亚硝酸盐检测和细胞成像

IF 1.2 4区化学

Chinese Journal of Analytical Chemistry Pub Date : 2024-11-01 DOI: 10.1016/j.cjac.2024.100456

Said ALAM , Linchuan LU , Xuanzuo TAO , Yanxia MAO , Shaojun ZHENG , Chunhui JIANG , Shu-Yang CHEN , Hongfei LU

{"title":"A highly selective and sensitive carbazole-based fluorescent probe for peroxynitrite detection and cellular imaging","authors":"Said ALAM , Linchuan LU , Xuanzuo TAO , Yanxia MAO , Shaojun ZHENG , Chunhui JIANG , Shu-Yang CHEN , Hongfei LU","doi":"10.1016/j.cjac.2024.100456","DOIUrl":"10.1016/j.cjac.2024.100456","url":null,"abstract":"<div><div>Peroxynitrite, a colorless and odorless reactive nitrogen species, plays a critical role in various physiological processes within biological systems. Therefore, developing a reliable method for quantitative detection of peroxynitrite in living systems is essential. In this study, we synthesized a simple, two-step, reaction-based fluorescent probe, designated as <strong>EHMC</strong>, specifically for peroxynitrite detection. The synthesis involved the use of 4-(9-phenyl-9H-carbazol-3-yl)benzaldehyde as the fluorophore and 2-hydrazineylpyridine as the recognition group, both of which exhibit inherently weak fluorescence. Upon oxidation of the C = N bond by peroxynitrite, <strong>EHMC</strong> undergoes conversion into an aldehyde, resulting in a significant fluorescence response. <strong>EHMC</strong> demonstrated high selectivity and sensitivity, achieving a detection limit of 5.43 µM under physiological conditions. Additionally, <strong>EHMC</strong> was successfully applied to HeLa cellular models, where it exhibited excellent cellular imaging capability for peroxynitrite detection in living systems.</div></div>","PeriodicalId":277,"journal":{"name":"Chinese Journal of Analytical Chemistry","volume":"52 11","pages":"Article 100456"},"PeriodicalIF":1.2,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142699200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A flexible electrochemical sensor based on AuBi bimetal for detection of Cd ions in packaged drinking water 基于金铋双金属的柔性电化学传感器，用于检测包装饮用水中的镉离子

IF 1.2 4区化学

Chinese Journal of Analytical Chemistry Pub Date : 2024-11-01 DOI: 10.1016/j.cjac.2024.100457

Mei WANG , Fang LIU , Yingkuan SUN , Liying JIANG

{"title":"A flexible electrochemical sensor based on AuBi bimetal for detection of Cd ions in packaged drinking water","authors":"Mei WANG , Fang LIU , Yingkuan SUN , Liying JIANG","doi":"10.1016/j.cjac.2024.100457","DOIUrl":"10.1016/j.cjac.2024.100457","url":null,"abstract":"<div><div>Heavy metal ion Cd, as a toxic pollutant, can accumulate in human body through the bioaccumulation effect of food chain and poses a threat to human health. Packaged drinking water is one of the main water sources for many people, making it crucial to detect their cadmium ion levels. In this work, an AuBi bimetal film was electrodeposited onto a flexible screen-printed electrode to construct highly sensitive cadmium ion sensors. The prepared sensor could enrich trace cadmium ions in the target electrolyte, followed by sensitive detection of cadmium ions using stripping wave voltammetry. The electrochemical results demonstrated that the developed sensor based on AuBi bimetal exhibited a significant linear response to cadmium ions in the range of 50 μg/L to 800 μg/L, with a low detection limit of 11.68 μg/L (S/N = 3), and it also showed good repeatability. The prepared flexible electrochemical sensor was employed to detect the cadmium ion level in five common types of packaged drinking water available on the market, and the relative standard deviation (RSD) and recovery were within normal ranges, indicating that it could achieve rapid and sensitive detection of cadmium ion level in drinking water and other foodstuffs.</div></div>","PeriodicalId":277,"journal":{"name":"Chinese Journal of Analytical Chemistry","volume":"52 11","pages":"Article 100457"},"PeriodicalIF":1.2,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142698758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Metabolomics analysis reveals that Qingxiangyin improves central precocious puberty through 13S-hydroxyoctadecadienoic acid mediated linoleic acid metabolic for regulating the PPAR pathways 代谢组学分析揭示清香药通过13S-羟基十八碳二烯酸介导的亚油酸代谢改善中枢性性早熟，从而调节PPAR通路

IF 1.2 4区化学

Chinese Journal of Analytical Chemistry Pub Date : 2024-11-01 DOI: 10.1016/j.cjac.2024.100454

Yiyuan CHEN, Jing LI

{"title":"Metabolomics analysis reveals that Qingxiangyin improves central precocious puberty through 13S-hydroxyoctadecadienoic acid mediated linoleic acid metabolic for regulating the PPAR pathways","authors":"Yiyuan CHEN, Jing LI","doi":"10.1016/j.cjac.2024.100454","DOIUrl":"10.1016/j.cjac.2024.100454","url":null,"abstract":"<div><div>The occurrence of central precocious puberty (CPP) among children which is induced by untimely activation of the hypothalamic-pituitary-gonadal (HPG) axis is increasing gradually. Traditional Chinese Medicine endeavors to eradicate or mitigate the underlying factors and thereby reestablish the balance within the physiological system, Qingxiangyin (QXY) is a Chinese medicine that can effectively improve CPP via balancing Yin and Yang. However, the metabolic regulation mechanism of QXY on CPP is still unclear. Here, we established a CPP mouse model, and carried out Leuprorelin (lep), Qingxiangyin high (QXY-h), middle (QXY-M) and low (QXY-L) treatment. The metabolic profile of hypothalamus was evaluated by LC-MS/MS. The major differentially expressed metabolites (DEMs) between the CPP model and blank group were (<em>S</em>)-Abscisic acid, Methylmalonic acid, 2-Oxo-4-methylthiobutanoic acid. The main metabolites in QXY-h vs model were pyridoxal phosphate, phenylpyruvate and palmitoylcarnitine. There were 14 distinct metabolites in the model vs. QXY-M group, among which 3 were up-regulated and 11 were down-regulated. The principal metabolite was succinic acid, phenylpyruvic acid and 13S‑hydroxy-octanadienoic acid. QXY-L induced alterations in 20 metabolites in CPP, with 5 metabolites up-regulated and 15 metabolites down-regulated. The major metabolites were 13S-hydroxyoctaenodienoic acid, benzoylamine, cyclohexanamine and palmitic acid. QXY-mediated metabolites were involved in “PPAR signaling pathway”, “linoleic acid metabolism”, “Lysine degradation” in CPP. In conclusion, the 13S-hydroxyoctadecadienoic acid mediateed linoleic acid metabolism for regulating the PPAR signaling pathway is the key mechanisms by which QXY affects CPP. Our results provide insights into the study of QXY therapy for CPP.</div></div>","PeriodicalId":277,"journal":{"name":"Chinese Journal of Analytical Chemistry","volume":"52 11","pages":"Article 100454"},"PeriodicalIF":1.2,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142698757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Renal protective effect of Isaria felina mycelium powder on diet and STZ-induced diabetes mice and the identification of major chemical constituents 鱼腥草菌丝粉对饮食和 STZ 诱导的糖尿病小鼠的肾脏保护作用及主要化学成分的鉴定

IF 1.2 4区化学

Chinese Journal of Analytical Chemistry Pub Date : 2024-11-01 DOI: 10.1016/j.cjac.2024.100451

Ziyang HUANG , Jingjing CHEN , Lili ZHAO , Lixia CHEN , Yuxin YANG , Junjun LI , Jing WANG , Yongming YANG , Lei YAN , Guoyan YU , Xiaowei SHI , Yiyin ZHANG , Yanlin YU , Sujiao LIANG , Xihua YANG

{"title":"Renal protective effect of Isaria felina mycelium powder on diet and STZ-induced diabetes mice and the identification of major chemical constituents","authors":"Ziyang HUANG , Jingjing CHEN , Lili ZHAO , Lixia CHEN , Yuxin YANG , Junjun LI , Jing WANG , Yongming YANG , Lei YAN , Guoyan YU , Xiaowei SHI , Yiyin ZHANG , Yanlin YU , Sujiao LIANG , Xihua YANG","doi":"10.1016/j.cjac.2024.100451","DOIUrl":"10.1016/j.cjac.2024.100451","url":null,"abstract":"<div><div>Type 2 diabetes is a group of metabolic diseases mainly characterized by chronic hyperglycemia. Diabetic kidney disease is the most common microvascular complication of diabetes.</div><div>The aim of this study was to investigate the therapeutic effect of <em>Isaria felina</em> mycelium powder (IFMP) on diet and streptozotocin (STZ)-induced diabetic mouse model. And we analyze the main chemical constituents of <em>Isaria felina</em> mycelium powder.</div><div>The main chemical constituents of the alcohol-soluble IFMP were prepared and identified by high-performance liquid chromatography-quadrupole time-of-flight mass spectrometry (HPLC-Q-TOF-MS). The fasting blood glucose and renal index of the mouse model was determined. Serum levels of triglyceride (TG), total cholesterol (TC), serum creatinine (Scr) and blood urea nitrogen (BUN) were detected. The levels of CD2AP and nephrin proteins in the kidney were detected by ELISA kits.</div><div>A total of 32 compounds were identified, including nucleosides (16 types), amino acids (13 types), sterols (one type) and glycosides (two types). The experimental results showed that compared with the diabetes model group, IFMP reduced fasting blood glucose, food intake and water intake. Biochemical analysis indicated that IFMP reduced the serum levels of TG, TC, BUN and Scr, and increased the levels of CD2AP and nephrin proteins in the kidneys.</div><div>Therefore, IFMP has the potential to treat diabetes and prevent kidney damage induced by hyperglycemia.</div></div>","PeriodicalId":277,"journal":{"name":"Chinese Journal of Analytical Chemistry","volume":"52 11","pages":"Article 100451"},"PeriodicalIF":1.2,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142653973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Determination of microplastic release from disposable plastic containers in Isfahan 测定伊斯法罕一次性塑料容器中的微塑料释放量

IF 1.2 4区化学

Chinese Journal of Analytical Chemistry Pub Date : 2024-11-01 DOI: 10.1016/j.cjac.2024.100448

Roya KELISHADI , Ali AGHABABAI BENI , Karim EBRAHIMPOUR , Motahar HEIDARI-BENI

{"title":"Determination of microplastic release from disposable plastic containers in Isfahan","authors":"Roya KELISHADI , Ali AGHABABAI BENI , Karim EBRAHIMPOUR , Motahar HEIDARI-BENI","doi":"10.1016/j.cjac.2024.100448","DOIUrl":"10.1016/j.cjac.2024.100448","url":null,"abstract":"<div><div>The widespread release of microplastics from disposable food containers raises significant concerns for health and the environment. This study aimed to elucidate the underlying mechanisms of microplastic release by exploring various factors, including temperature variations and the impact of spoon contact on disposable utensils. A total of 30 samples of disposable polystyrene containers were randomly selected from markets in Isfahan, Iran. Advanced analytical techniques, including Fourier transform infrared spectroscopy, field emission scanning electron microscopy, dynamic light scattering, X-ray diffraction, and Raman spectroscopy, were employed for comprehensive analysis. The results unequivocally established the chemical and structural similarity between the microplastics released from these containers and polystyrene. Furthermore, the study revealed that both elevated temperatures and the physical agitation caused by spoon contact significantly increased the release of microplastics from the containers. The maximum amount of microplastics released was 30 mg at 120 °C when only water was circulated in the container, while it increased to 56 mg at 120 °C when the spoon was also moved inside the containers.</div></div>","PeriodicalId":277,"journal":{"name":"Chinese Journal of Analytical Chemistry","volume":"52 11","pages":"Article 100448"},"PeriodicalIF":1.2,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142653972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A development in greener microextraction methods for analysis of pesticide residues in environmental water samples: A review 用于分析环境水样中农药残留的绿色微萃取方法的发展：综述

IF 1.2 4区化学

Chinese Journal of Analytical Chemistry Pub Date : 2024-11-01 DOI: 10.1016/j.cjac.2024.100458

Endalkachew ETANA , Birhanu MEKASSA

{"title":"A development in greener microextraction methods for analysis of pesticide residues in environmental water samples: A review","authors":"Endalkachew ETANA , Birhanu MEKASSA","doi":"10.1016/j.cjac.2024.100458","DOIUrl":"10.1016/j.cjac.2024.100458","url":null,"abstract":"<div><div>Pesticide residues in water are gaining prominence as one of the most serious water quality challenges. Their analysis requires advanced sample preparation and instrumental techniques. However, there is a continuing challenge mainly because of the trace quantities as well as the high amount of interfering substances which can be co-extracted with them, frequently leading to method errors and damages the efficiency of analytical instruments. Thus, the development of greener microextraction techniques for pesticide analysis is very important since it reduces overall sample preparation time, use fewer organic solvents, produce less wastes, has adequate extraction and clean up capacity for the target analytes, and removes interferents from the complex sample that can affect instrumental performance. This paper focuses on reviewing greener microextraction methods used in the analysis of pesticide residues in environmental water samples. The microextraction methods include: liquid phase microextraction (LPME), solid phase microextraction (SPME), dispersive liquid-liquid microextraction (DLLME), hollow fiber liquid phase microextraction (HF-LPME), stir bar sorptive extraction (SBSE) and single drop microextraction (SDME). This review paper also presents the development, advantage and disadvantage, green aspects and sample preparation technique of each microextraction methods for analysis of pesticide residues in water matrix. Moreover, the different analytical techniques used for determination of the required analyte from water matrix after extraction steps were also addressed.</div></div>","PeriodicalId":277,"journal":{"name":"Chinese Journal of Analytical Chemistry","volume":"52 11","pages":"Article 100458"},"PeriodicalIF":1.2,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Potential molecular mechanisms of Danggui-Shaoyao-San in the treatment of melasma based on network pharmacology with molecular docking 基于网络药理学与分子对接的当归芍药散治疗黄褐斑的潜在分子机制

IF 1.2 4区化学

Chinese Journal of Analytical Chemistry Pub Date : 2024-10-01 DOI: 10.1016/j.cjac.2024.100449

Yuehan HUANG , Guo XU , Lin ZHU , Qiao JIN , Tianran CHEN

{"title":"Potential molecular mechanisms of Danggui-Shaoyao-San in the treatment of melasma based on network pharmacology with molecular docking","authors":"Yuehan HUANG , Guo XU , Lin ZHU , Qiao JIN , Tianran CHEN","doi":"10.1016/j.cjac.2024.100449","DOIUrl":"10.1016/j.cjac.2024.100449","url":null,"abstract":"<div><div>Although Danggui-Shaoyao-San (DSS) is frequently used in China to treat melasma, its underlying mechanism still needs to be better understood. Our aim is to determine the mechanism behind DSS in treating melasma through network pharmacology (NP). The DSS active compounds alongside corresponding target genes are identified by accessing the TCMSP database and SwissTargetPrediction. Melasma-associated targets are retrieved from the GeneCards, DisGeNet, Durgbanks, OMIM, and TTD databases. Next, we build a component-target association network via Cytoscape software while generating a protein-protein interaction network utilizing the STRING database. Subsequently, both core target genes and active compounds are determined. Through the DAVID database and Bioinformatics tools, Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses are conducted. Lastly, the CB-Dock2 server is deployed to conduct molecular docking (MOD). The results manifest that alisol B, cerevisterol, and Wallichilide, among others, are active compounds in DSS, while PTGS2, ESR1, and ESR2 are core target genes. Both GO and KEGG analyses showcase that the potential core drug components modulate pathways in cancer, chemical carcinogenesis-receptor activation, calcium, relaxin, and estrogen signaling by exerting their effects on biological processes. These processes include negative gene expression regulation as well as positive regulation of both cytosolic calcium ion concentration and transcription from the RNA polymerase II promoter, thereby playing an anti-melasma pharmacological role. The MOD displays that core target genes have good binding activity with the active compounds. To conclude, NP demonstrates that DSS can serve as an innovative medication for treating melasma.</div></div>","PeriodicalId":277,"journal":{"name":"Chinese Journal of Analytical Chemistry","volume":"52 10","pages":"Article 100449"},"PeriodicalIF":1.2,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical simulation of droplet formation in a Co-flow microchannel capillary device 共流式微通道毛细管装置中液滴形成的数值模拟

IF 1.2 4区化学

Chinese Journal of Analytical Chemistry Pub Date : 2024-10-01 DOI: 10.1016/j.cjac.2024.100439

Peihua ZHANG , Hongwei YAN , Xiaoxiao CHU , Xueye CHEN

{"title":"Numerical simulation of droplet formation in a Co-flow microchannel capillary device","authors":"Peihua ZHANG , Hongwei YAN , Xiaoxiao CHU , Xueye CHEN","doi":"10.1016/j.cjac.2024.100439","DOIUrl":"10.1016/j.cjac.2024.100439","url":null,"abstract":"<div><div>In this article, a numerical simulation of the droplet formation in a Co-flow microchannel capillary device, and the influencing factors of the formation of droplets are studied. The level set method is used to track the two-phase interface and droplet formation. In the Co-flow focusing device, we explored the influencing factors of the size of the generated droplets. In the Co-flow focusing device, we explored the influences of various factors on the droplet size, generation frequency, and the droplet pressure at the centerline. The results demonstrate that an increased ratio of dispersed phase velocity to continuous phase velocity leads to a significant increase in the volume of generated droplets, a significant decrease in droplet generation frequency, and a significant decrease in droplet pressure at the centerline. Furthermore, as the viscosity of continuous phase increases, the volume of generated droplets decreases significantly, the frequency of droplet generation increases significantly, and the pressure of droplets at the centerline decreases significantly. Additionally, an elevated contact angle between the continuous phase and the wall results in a slight increase in the volume of generated droplets, alongside a reduction in droplet generation frequency and a decrease in droplet pressure at the centerline. Moreover, with the increase in interfacial tension, there is a significant increase in the volume of droplet generation, a significant decrease in the frequency of droplet generation, and a significant increase in the pressure of droplets at the centerline.</div></div>","PeriodicalId":277,"journal":{"name":"Chinese Journal of Analytical Chemistry","volume":"52 10","pages":"Article 100439"},"PeriodicalIF":1.2,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142441922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Determination of tetracycline by FRET fluorescence between chenpi carbon quantum dots and copper nanoparticles 利用陈皮碳量子点与纳米铜粒子之间的 FRET 荧光测定四环素

IF 1.2 4区化学

Chinese Journal of Analytical Chemistry Pub Date : 2024-10-01 DOI: 10.1016/j.cjac.2024.100440

Ping Lu , Xiangru Hou , Lu Ga , Gerile Aodeng , Jun Ai

{"title":"Determination of tetracycline by FRET fluorescence between chenpi carbon quantum dots and copper nanoparticles","authors":"Ping Lu , Xiangru Hou , Lu Ga , Gerile Aodeng , Jun Ai","doi":"10.1016/j.cjac.2024.100440","DOIUrl":"10.1016/j.cjac.2024.100440","url":null,"abstract":"<div><div>This paper describes a new strategy based on fluorescence resonance energy transfer (FRET), in which the rapid synthesis of carbon quantum dots (CQDs) and copper nanoparticles (CuNPs) is used for the determination of tetracycline (TC). Therefore, in this paper, CQDs for fluorescence determination of TC were prepared by microwave heating using chenpi as a carbon source. The prepared CQDs showed good dispersion and uniform spherical shape under transmission electron microscope (TEM), with an average particle size of about 1.91 nm. Under ultraviolet (UV) irradiation, the CQDs emitted bright blue-green fluorescence with a strong fluorescence (> 1.6 × 10<sup>3</sup> a.u.), and the fluorescence intensity did not change within one week. The emission wavelength of CQDs overlapped with the absorbance of CuNPs, and therefore, CuNPs could burst the fluorescence of CQDs by FRET mechanism. After incubation with TC, the fluorescence of CQDs was restored by the ligand reaction of CuNPs with TC. The assay showed good linearity for TC in the 1–100 nmol/L range, with a determination limit of 0.3554 nmol/L. This study demonstrated the potential of CQDs in antibiotic assays and provided a valuable method for monitoring TC levels.</div></div>","PeriodicalId":277,"journal":{"name":"Chinese Journal of Analytical Chemistry","volume":"52 10","pages":"Article 100440"},"PeriodicalIF":1.2,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142425820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0