Article
Biochemical Research Methods
Qiming Kou, Ping Wu, Qi Sun, Chenxi Li, Lei Zhang, Haixing Shi, Juan Wu, Yarong Wang, Xueling Yan, Tao Le
Summary: A fluorescent aptamer/GO-based biosensor was developed for detecting SMZ residues in animal-derived foods, showing high affinity and specificity. The sensor has low detection limits and a wide dynamic linear range, allowing for accurate detection of SMZ residues in foods.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Wei-Hao Huang, Van-Phung Mai, Ruo-Yin Wu, Ko-Li Yeh, Ruey-Jen Yang
Summary: This study proposes a sensor for detecting mercury and lead ions using graphene oxide and aptamer solution, with detection limits lower than the maximum limits set by the World Health Organization for drinking water.
Article
Materials Science, Multidisciplinary
Wen-Dan Li, Xiang-Yu Zeng, Gang-Yu Lv, Zhen-Hui Liang, Qi-Jie Liu, Wan-Qi Fu, Jiu-An Zhang, Yan-Xian Feng, Hao-Yi Wu
Summary: Fluorescent graphene oxide (GO) nanoparticles were synthesized via thermal carbonization of citrate acid, with the size of GO ranging from several to several hundred nanometers depending on the synthesizing temperature. The emission of green and blue light from the GO suspension could be dynamically quenched by Cu2+ ions, with the fluorescence intensity decreasing exponentially with Cu2+ concentration. The quenching mechanism was attributed to the bridging of -COOH and -OH groups on the GO surface by Cu2+, restricting vibration of edge atoms or clusters and reducing the number of luminophores. The concentration of Cu2+ could be detected by the fluorescent intensity of GO.
Article
Chemistry, Multidisciplinary
Blandine Billet, Benoit Chovelon, Emmanuelle Fiore, Farid Oukacine, Mel-Alexandre Petrillo, Patrice Faure, Corinne Ravelet, Eric Peyrin
Summary: This study introduced an aptamer switch design that relies on transition metal ions to trigger DNA destabilization, which was applied for small organics detection. The DNA form changes when metal ions coordinate with nucleobases, achieving a simple DNA switching process.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Analytical
Sen Li, Yu Kang, Mengdi Shang, Yanfei Cai, Zhaoqi Yang
Summary: Graphene oxide and specific aptamer were utilized for the detection of Ochratoxin A. By optimizing the detection conditions and using appropriate surface blockers, the modified sensing platform exhibited a lower detection limit and a wider linear range, showing excellent selectivity for OTA.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Analytical
Yujie Shen, Mingcong Rong, Xiaodan Qu, Bolin Zhao, Jinhui Zou, Zhenbang Liu, Yu Bao, Ying He, Siyi Li, Xiaojin Wang, Meiyun Chen, Kaiying Chen, Yuwei Zhang, Li Niu
Summary: Detection of heavy metal ions in water is an important topic in the field of analytical chemistry and environmental science. In this study, a novel strategy for determining the total content of heavy metal ions in water using fluorescence spectroscopy was developed. Fluorescent nitrogen, sulfur co-doped carbon quantum dots were prepared and showed a wide linear response to a series of water-soluble metal ions. The N, S-CQDs were also found to effectively remove heavy metal ions from water.
Article
Chemistry, Analytical
Shiquan Qian, Yiyi Han, Fei Xu, Dongsheng Feng, Xiaojun Yang, Xiuxiu Wu, Liling Hao, Min Yuan
Summary: A novel electrochemical paper-based microfluidic chip was developed for simultaneous detection of cadmium (II) and lead (II) in vegetable and fruit samples. The chip offers advantages of low cost, portability, and fast detection, with excellent accuracy and selectivity.
Article
Chemistry, Analytical
Shunxiang Gao, Xin Zheng, Jihong Wu
Summary: In this study, aptamers targeting ANGPTL4 were obtained with high affinity and specificity using SELEX technology. Through optimization strategies, a core sequence was generated to increase binding affinity. A graphene oxide-based aptasensor was developed for detecting ANGPTL4 in serum samples, showing good reproducibility and stability.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Environmental Sciences
Govindan Rajivgandhi, K. Bhavya, B. Vidhya, Naiyf S. Alharbi, Shine Kadaikunnan, Jamal M. Khaled, Khalid F. Alanzi, R. Nandhakumar
Summary: Graphene oxide-p-Phenylenediamine nanocomposites of different ratios were prepared and characterized for their potential use as chemical sensors to detect metal ions. The nanocomposites showed selectivity and sensitivity towards different metal ions, with the ability to detect ions at physiological pH levels.
ENVIRONMENTAL RESEARCH
(2022)
Review
Food Science & Technology
Zanlin Chen, Miaojia Xie, Fengguang Zhao, Shuangyan Han
Summary: The increasing heavy metal pollution requires the development of a sensitive, simple, and reproducible detection method. Aptamers, as new artificial probes, have gained attention for their high sensitivity, easy acquisition, wide target range, and wide use in detecting harmful substances. The use of nanomaterials in aptamer-based electrochemical biosensors significantly improves the detection sensitivity.
Article
Food Science & Technology
Xinyue Ma, Rizeng Meng, Miaomiao Yu, Na Guo, Huan Wang, Hongru Zheng, Chunyan Sun
Summary: This study constructed a fluorescent aptasensor for the detection of SEA by solving the negative effect of graphene oxide on fluorescence. GO was used to separate free aptamers and cDNA, enabling quantitative analysis of the fluorescent signal. The method exhibited a wide linear range and low detection limit, and showed satisfactory application in real samples.
Article
Biochemical Research Methods
Hanyue Cui, Huan Lu, Jing Yang, Yao Fu, Yan Huang, Li Li, Yaping Ding
Summary: In this paper, a fluorescent aptamer sensor based on carbon dots and graphene oxide was constructed. The sensor can detect progesterone with high sensitivity and selectivity, and has satisfactory detection results in milk.
JOURNAL OF FLUORESCENCE
(2022)
Article
Nanoscience & Nanotechnology
Eun-Bi Kim, M. Imran, Ahmad Umar, M. Shaheer Akhtar, Sadia Ameen
Summary: In this study, a functional nanocomposite based on HTD oligomer and GO was synthesized and used to fabricate a highly sensitive and selective chemical sensor for simultaneous detection of heavy metal ions such as Cr2+ and Cu2+. The HTD@GO/GCE sensor probe exhibited outstanding physiochemical, structural, and surface characteristics, and demonstrated strong selectivity towards Cr2+ and Cu2+ ions. Importantly, the sensor showed good dynamic linear ranges and detection limits for trace Cr2+ and Cu2+ ions, with low relative standard deviations as suggested by the repeatability test. The reliability of the functionalized nanocomposite sensor was also confirmed by analyzing actual water samples.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Chemistry, Analytical
Asma Verdian, Zahra Khoshbin, Chih-Hsin Chen, Qiongzheng Hu
Summary: This work describes a novel strategy for designing an ultrasensitive liquid crystal (LC) aptasensor, which utilizes the reorientation of LCs induced by conformational changes of a triple helix molecular switch (THMS) structure for the quantitative detection of Pb2+ and Hg2+ ions. The developed aptasensor exhibits a wide linear range with ultralow detection limits, and is not interfered by other analytes. Additionally, this sensing strategy can be easily expanded for other targets and used for multiple analyte detection, showing promising potential as a LC AttoSens for precision screening of hazardous residues in food analysis.
Article
Chemistry, Analytical
Xin Yi Wong, Daniel Quesada-Gonzalez, Sivakumar Manickam, Kasturi Muthoosamy
Summary: A nanobiosensor using FA-rGO-RNase A/AuNCs for detecting sodium and potassium ions based on fluorescence turn-off/turn-on is presented. The fabrication of RNase A/AuNCs and the activity of RNase A protein after formation were studied. The nanobiosensor showed excellent sensing performance and has the potential to be used as a metal ion sensor.
ANALYTICA CHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Zijing Lu, Weiwei Xiong, Peng Wang, Xin Li, Kun Zhai, Rujie Shi, Dongshan Xiang
Summary: A fluorescence quantitative analysis method based on nucleic acid aptamer molecular beacon (MB) probes has been developed for simultaneous detection of Hg2+ and Pb2+. The method shows high sensitivity, accuracy, and a good linear relationship between fluorescence intensity and target concentrations.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2021)
Article
Biochemical Research Methods
Zijing Lu, Yansong Jiang, Peng Wang, Weiwei Xiong, Baoping Qi, Yingkun Zhang, Dongshan Xiang, Kun Zhai
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2020)
Article
Chemistry, Applied
Yansong Jiang, Zijing Lu, Pengcheng Wang, Jianing Xu, Li Wang, Yong Fan
MICROPOROUS AND MESOPOROUS MATERIALS
(2020)
Article
Chemistry, Analytical
Peng Wang, Xiaohong Wang, Wenheng Li, Zhongming Leng, ZiJing Lu, Kun Zhai, Dongshan Xiang
Summary: We have developed a quantitative analysis method based on two-dimensional bimetallic MOF nanosheets for simultaneous detection of four specific DNA fragments. This method utilizes fluorescent probes and a quencher to achieve rapid detection of T-DNAs, and exhibits low detection limits, good selectivity, and high sensitivity.
MICROCHEMICAL JOURNAL
(2022)
Article
Energy & Fuels
Jianbo Li, Delong Meng, Xizhuo Wang, Zijing Lu, Cui Zhang, Yonghe Peng, Shaoxian Song, Ling Xia
Summary: This study explores the microbial community composition in coal slurry using 16S rDNA and finds that they are closely related to organic matter biodegradation. The isolated Sphingomonas strain from coal slurry is able to degrade polyacrylamide effectively, inhibiting the settling rate and settling layer height of coal slurry.
Article
Environmental Sciences
Zhou Zhou, Ling Xia, Xizhuo Wang, Chenyu Wu, Jiazhi Liu, Jianbo Li, Zijing Lu, Shaoxian Song, Jiang Zhu, Maria Luciana Montes, Mostafa Benzaazoua
Summary: This study investigates the utilization of coal slime in the restoration of copper tailings and finds that the addition of 40% coal slime enhances plant growth, improves soil characteristics, and increases microbial diversity. The concentrations of heavy metals such as copper and zinc also decrease during the restoration process. The application of coal slime shows potential in the restoration of heavy metal tailings.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Inorganic & Nuclear
Yansong Jiang, Yating Huang, Xiangxiang Shi, Zijing Lu, Jiamo Ren, Zimo Wang, Jianing Xu, Yong Fan, Li Wang
Summary: In this study, a new stable lanthanide-based metal-organic framework (MOF) was successfully assembled, demonstrating strong red fluorescence emission and sensitivity for pH and folic acid detection. The MOF was also used as a fluorescent material for fingerprint identification. Additionally, mixed-matrix membranes (MMMs) based on the MOF showed comparable fluorescence emission to the MOF itself and exhibited good selectivity and recyclability for folic acid sensing.
INORGANIC CHEMISTRY FRONTIERS
(2021)
