MICROCHEMICAL JOURNAL
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2024
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IF 4.9
Brian Musikavanhu,Xin Huang,Quanhong Ma,Zhaoli Xue,Lei Feng,Long Zhao
A novel rhodamine-benzothiazole fluorescent chemosensor, bridged with a thiophene unit, is designed for the turn-on detection of Hg 2+ and Cu 2+ . Noteworthy findings include impressively low limits of detection (0.007 μM for Hg 2+ and 0.013 μM for Cu 2+ ), a determined sensing mechanism involving spirolactam ring opening and hydrolytic cleavage, consistent 1:1 binding stoichiometry for both metal ions and an optimal pH of around 6. The sensor’s practical applicability is demonstrated through successful implementation in HeLa cells and zebrafish, along with effective analyte recovery in various water samples. This work advances the field by providing a highly sensitive and versatile chemosensor for environmental and biological applications.
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高影响因子
JOURNAL OF FLUORESCENCE
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2025
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IF 3.1
Han Bo-Ming,Zhang Hao-Rui,Gao Wen-Jie,He Xi-Wen,Li Wen-You,Zhang Yu-Kui
In this work, a dual-emission material based on lanthanide metals was synthesized and used as a ratio fluorescence sensor to respond to Hg 2+ and H 2 O 2 , respectively. Tb-BDC-NH 2 as a bimetal MOFs had double ligands and exhibited double fluorescence emission peaks at 550 nm and 450 nm. The two emission peaks of Tb-BDC-NH 2 can be quenched by Hg 2+ and H 2 O 2 respectively, forming a built-in calibration signal for ratio fluorescence detection. Based on the different detection conditions of the Hg 2+ and H 2 O 2 , the simultaneous detection of the two detection substances can be achieved with simple operation. This detection system had good stability and anti-interference ability. Under optimal conditions, the detection limit for Hg 2+ detection was 0.2 µM. Meanwhile, for the detection of H 2 O 2 , the detection limit was 11 µM and large linear ranges were obtained. Through actual sample testing, it had been proven that the ratio fluorescence sensor based on Tb-BDC-NH 2 had good application prospects. And the work also provided a new idea for double substances detection.
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DOI
PubMed
高影响因子
CHEMICAL PHYSICS LETTERS
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2025
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IF 3.1
Yingying Kou,Zhuang Wu,Chenling Yan,Jinggang Wang,Fan Liu,Donghai Yuan
Development of a new sensor for the simple detection of Hg 2+ , which improves on the shortcomings of conventional mercury detection.The size of the nanogold(AuNPs) particles was controlled by controlling the amount of sodium citrate and gold salt. AuNPs was also functionalized by arginine and melamine. The functionalized nanogold was sensitive and selective for Hg 2+ . It is also useful in real water samples. The 32 nm nanogold modification had the lowest limit of detection (LOD). The melamine-functionalized 32 nm AuNPs had a LOD of 4.17 μmol/L, which was better than the arginine-functionalized 32 nm AuNPs with a LOD of 5 μmol/L.
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高影响因子
ELECTROPHORESIS
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2019
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IF 2.754
Fangjie Zheng,Wei Ke,Yuan Zhao,Chuanlai Xu
Establishing a simple and accurate method for Hg 2+ detection is of great importance for the environment and human health. In this work, platinum nanoparticles (Pt NPs) with different capped agents and morphologies were synthesized. It was found that Pt NPs exhibited peroxidase-like activity that can catalyze the chemiluminescence (CL) of the luminol system without H 2 O 2 . The most intensive CL signals were obtained by using PVP-capped Pt NPs as catalysis. Based on the fact that Hg 2+ could further enhance the CL intensity in the Pt NPs-luminol CL system, a Pt NPs-catalyzed CL method based on a flow injection system is developed for the sensitive analysis of Hg 2+ . When the concentration of Hg 2+ in the system increases, the CL intensity would together increase, thereby achieving sensitive Hg 2+ detection. The limit of detection (LOD) was calculated to be 8.6 nM. This developed method provides a simple and rapid approach for the sensitive detection of Hg 2+ and shows great promise for applications in other complex systems.
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高影响因子
MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Jiaxuan Liu,Wensi Ma,Xinyue Huang,Lei Jiang,Lin Yuan,Xiuling Ji,Yujiao Tu
Rapeseed oil residue (ROR) is the waste product of rapeseed oil extraction, mainly including protein and lignocellulose. In this study, we utilized waste ROR as the raw material to successfully prepare blue fluorescent carbon dots (ROR-CDs) by self-propagating synthesis. It demonstrated rapid preparation (20 min) with low energy consumption (400 °C) and without complicated purification processes. We analyzed the structural and optical properties of ROR-CDs. ROR-CDs exhibited exceptional fluorescence performance and stabilized, responding specifically to divalent mercury ions (Hg 2+ ) and aureomycin hydrochloride (CTC). Thus, we developed a high-sensitivity detection technique with a detection range and limit of detection (LOD) for Hg 2+ of 0–250 μg/L and 191.69 ng/L, respectively. For CTC, the detection range and LOD were 0–50 μM and 12.7 nM (S/N = 3), respectively. It is easy to operate and low-cost, ensuring efficient assistance for testing efforts in associated domains. Additionally, ROR-CDs-based detection technique can analyze Hg 2+ and CTC in the actual samples, demonstrating significant potential for application in environmental monitoring and food safety assessment.
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高影响因子
ACS Applied Nano Materials
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2022
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IF 6.14
Shangjie Mou,Jiu Huang,Jing Hou,Chen Gao,Jinyin Bai,Guiyin Xu,Peng Li
Mercury pollution in water poses a serious threat to ecosystems and human health. There is an urgent need for developing effective and sustainable methods for controlling mercury contamination. In this work, modulated and easily accessed CuxS nanoclusters were introduced and anchored in situ onto the surface of a carbonized melamine sponge (C-ML) for the preparation of a porous filter. Polydopamine (PDA) was used as an interface between CuxS nanoclusters and C-ML for the robust construction. The prepared CuxS/PDA@C-ML filter displayed high extraction efficiency and selective affinity for Hg2+, and a complexation reaction was discovered during Hg2+ immobilization. The pilot-scale test conducted with 1.5 tons of Hg2+-containing wastewater (initial concentration 5.0 μg/L) for 26 days revealed that the proposed filter presented extraordinary stability with hardly any run off loss of Cu and S, and Hg2+ concentration at the outlet met the drinking water standard of the United States Environmental Protection Agency. This research potentially offers a sustainable and affordable approach for eliminating Hg2+ from wastewater and is promising for scale-up applications.
研究领域:
环境科学
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材料科学
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水处理
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污染控制
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高影响因子
TALANTA
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2018
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IF 4.244
Ying-Bo Liu,Ting-Ting Zhai,Yan-Yan Liang,Yue-Bo Wang,Xing-Hua Xia
We demonstrated a sensitive method for detection of glutathione (GSH) based on LSPR scattering spectrum using gold core-satellite nanostructure linked by T-Hg 2+ -T base pair . The core-satellite assembly caused coupling between plasmonic nanoparticles , which inducing distinct change of LSPR peak wavelength. As the interaction between Hg 2+ and GSH, the core-satellite nanostructure would be disassembled, which accompanied with spectral blue-shift of the scattering spectrum. By using this method, GSH could be quantitatively detected, and the detection limits can reach to 0.1 µM.
研究领域:
纳米技术
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分析化学
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生物传感器
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PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2015
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IF 2.353
Shuai Zhou,Ze-Quan Zhou,Xuan-Xuan Zhao,Yu-Hao Xiao,Gang Xi,Jin-Ting Liu,Bao-Xiang Zhao
We have developed a novel fluorescent chemosensor ( DAM ) based on dansyl and morpholine units for the detection of mercury ion with excellent selectivity and sensitivity. In the presence of Hg 2+ in a mixture solution of HEPES buffer (pH 7.5, 20 mM) and MeCN (2/8, v/v) at room temperature, the fluorescence of DAM was almost completely quenched from green to colorless with fast response time. Moreover, DAM also showed its excellent anti-interference capability even in the presence of large amount of interfering ions. It is worth noting that DAM could be used to detect Hg 2+ specifically in the Yellow River samples, which significantly implied the potential applications of DAM in the complicated environment samples.
研究领域:
分析化学
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环境科学
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2016
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IF 4.758
Jiwen Hu,Zhangjun Hu,Sheng Liu,Qiong Zhang,Hong-Wen Gao,Kajsa Uvdal
We design and synthesize a new ratiometric fluorescent chemodosimeter ( S1 ) for the selective and sensitive detection of Hg 2+ . Upon addition of Hg 2+ , the emission of the S1 exhibits a large bathochromic shift from 393 to 515 nm (up to 122 nm) which is ascribed to an intramolecular charge transfer process in the resultant. The Hg 2+ -induced dethioacetalization for sensing mechanism has been demonstrated by using high-performance liquid chromatography analysis of the sensing process. The interference experiments further demonstrate that S1 exhibits very high selectivity towards Hg 2+ over other coexisting cations/anions. Subsequently, a good linearity of the concentrations of Hg 2+ (0–15 μM) vs the ratiometric signals ( I 515 / I 393 ) allows a fluorogenic method for the quantitative detection of Hg 2+ , with the limitation of detection determined to be 5.22 × 10 −7 M.
研究领域:
分析化学
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环境科学
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高影响因子
DYES AND PIGMENTS
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2017
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IF 3.473
Yuan Zhao,Xuan Yang,Linyan Cui,Yali Sun,Qijun Song
Mercury ions (Hg 2+ ) and silver ions (Ag + ) are assigned to the highest toxicity class of heavy metal pollution. Here, a novel sensor is firstly developed for the simultaneous detection of coexisting Ag + and Hg 2+ in aqueous solution, depending on the catalytic properties of poly(vinyl pyrrolidone) (PVP)-capped platinum nanoparticle (Pt NPs) and the strong chelation of EDTA to Hg 2+ . PVP-capped Pt NPs exhibit uniform morphology and possess great intrinsic peroxidase-like activity in comparison to citrate-capped Pt NPs, PVP-capped Ru NPs and Ir NPs, attributing to the enhanced catalytic efficiency determined by loosely packed PVP and the excellent catalytic decomposition activities of H 2 O 2 . Hg 2+ and Ag + could induce remarkable inhibition of the peroxidase-like activity of Pt NPs by changing the electronic state of the active sites through metallophilic interactions. The selective and simultaneous detection of Hg 2+ and Ag + was realized via the addition of ethylenediaminetetraacetate (EDTA), which could successfully mask Hg 2+ but had negligible effect on Ag + . The proposed approach inspires new designs of novel catalytic nanoprobes for the multi-analyte assay of heavy metal ions .
研究领域:
分析化学
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环境科学
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纳米技术
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2022
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IF 9.221
Siying Che,Linlin Yin,Yao Fan,Qijia Shou,Chunsong Zhou,Haiyan Fu,Yuanbin She
As a brand probe material, functional ionic liquids (ILs) have already been successfully employed in the detections of many targets, however, few of them focused on the real-time visual monitoring of trace Hg 2+ , one of the most representative heavy metal ions . Herein, we report a novel ratio fluorescent sensor using facile mixture of [RDB] [P 66614 ] IL and 7-hydroxycoumarin (HDC) for the on-site monitoring of Hg 2+ ignoring background interferences. To utilize and enhance the affinity characteristics of rhodamine B for Hg 2+ , it was first covalently linked onto the anion of IL and further mixed with HDC to construct a novel ratio fluorescent sensor for the achievement of self-calibration. Furthermore, this novel sensor showed a rapid and obvious color rendering performance from light white to opera pink even towards trace mercury(Ⅱ) in the range of 0.1–50 nM and could be further used even in common real samples such as waste water , urine, human plasma et. al. Most importantly, the sensor could be assembled into a paper sensor for the on-site visual monitoring of trace Hg 2+ ranging from 10 to 400 nM only taking 2 s, which enable to meet requirements for mercury(Ⅱ) limitations of WHO (30 nM) and EPA (10 nM).
研究领域:
分析化学
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环境科学
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生物医学
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高影响因子
Frontiers in Chemistry
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2018
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IF 4.155
Tu Jiawei,Gan Ying,Liang Tao,Hu Qiongwen,Wang Qian,Ren Tianling,Sun Qiyong,Wan Hao,Wang Ping
Invisible mercury ion is an extremely poisonous environmental pollutant, therefore, a fast and highly sensitive detection method is of significant importance. In this study, a liquid-gated graphene field-effect transistor (GFET) array biosensor (6 × 6 GFETs on the chip) was fabricated and applied for Hg2+ quantitate detection based on single-stranded DNA (ssDNA) aptamer. The biosensor showed outstanding selectivity to Hg2+ in mixed solutions containing various metal ions. Moreover, the sensing capability of the biosensor was demonstrated by real-time responses and showed a fairly low detection limit of 40 pM, a wide detection ranged from 100 pM to 100 nM and rapid response time below one second. These results suggest that the GFET array biosensor based on ssDNA aptamer offers a simple fabrication procedure and quite fast method for mercury ion contaminant detection and are promising for various analytical applications.
研究领域:
环境科学
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纳米技术
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分析化学
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生物技术
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PubMed
高影响因子
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