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Miniaturized electrochemical sensors and their point-of-care applications

Chinese Chemical Letters 2020年第3期31卷 589-600页

作者： Wei Zhang ruiguo wang Fang Luo Peilong wang Zhenyu Lin Institute of Quality Standards and Testing Technology for Agro-products Chinese Academy of Agricultural SciencesBeijing 100081China MOE Key Laboratory for Analytical Science of Food Safety and Biology Fujian Provincial Key Laboratory of Analysis and Detection for Food SafetyCollege of ChemistryFuzhou UniversityFuzhou 350116China

Most of the current analytical methods depend largely on laboratory-based analytical techniques that require expensive and bullky equipment,potentially incur costly testing,and involve lengthy detection processes.With increasing requirements for point-of-care testing(POCT),more attention has been paid to miniaturized analytical devices.Miniaturized electrochemical(MEC)sensors,including different material-based MEC sensors(such as DNA-,paper-,and screen electrode-based),have been in strong demand in analytical science due to their easy operation,portability,high sensitivity,as well as their short analysis time.They have been applied for the detection of trace amounts of target through measuring changes in electrochemical signal,such as current,voltage,potential,or impedance,due to the oxidation/reduction of chemical/biological molecules with the help of electrodes and electrochemical units.MEC sensors present great potential for the detection of targets including small organic molecules,metal ions,and biomolecules.In recent years,MEC sensors have been broadly applied to POCT in various fields,including health care,food safety,and environmental monitoring,owing to the excellent advantages of electrochemical(EC)technologies.This review summarized the state-of-the-art advancements on various types of MEC sensors and their applications in POCT.Furthermore,the future perspectives,opportunities,and challenges in this field are also discussed.

关键词： Miniaturized electrochemical sensors Point-of-care testing DNA-based miniaturized electrochemical sensor Paper-based electrochemical sensor Microfluidics-based electrochemical sensor Miniaturized capillary electrophoresis-based sensor

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Optimal dietary copper requirements and relative bioavailability for weanling pigs fed either copper proteinate or tribasic copper chloride

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Journal of Animal Science and Biotechnology 2020年第4期11卷 1189-1203页

作者： Gang Lin Yang Guo Bing Liu ruiguo wang Xiaoou Su Dongyou Yu Pingli He Institute of Quality Standards and Testing Technology for Agricultural Products Chinese Academy of Agricultural SciencesKey Laboratory of Agrifood Safety and QualityMinistry of Agriculture and Rural AffairsBeijing 10081People’s Republic of China College of Animal Science Zhejiang UniversityKey Laboratory of Animal Nutrition and Feed in East China of Ministry of Agriculture and Rural AffairsHangzhouZhejiang 310058People’s Republic of China State Key Laboratory of Food Science and Technology Jiangnan UniversityWuxiJiangsu 214122People’s Republic of China State Key Laboratory of Animal Nutrition College of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193People’s Republic of China.

Background: The objective of this study was to determine the effects of supplementing Cu on growth performance, Cu metabolism and Cu-related enzyme activities of weanling pigs fed diets with two different Cu sources, and to estimate optimal Cu requirements and relative bioavailability from these two sources for pigs.Methods: Weanling pigs were allocated to 14 treatments arranged factorially, including 6 added Cu levels(5, 10,20, 40, 80, 160 mg/kg), and 2 mineral sources(tribasic Cu chloride, TBCC and copper proteinate, Cu Pro), as well as one negative control(0 mg/kg added Cu level) and one maximum allowed level treatment(200 mg/kg TBCC) for the entire 38-d experiment. Growth performance, mineral status and enzyme activities were measured at the end of this study.Results: Increasing levels of Cu showed linear and quadratic responses(P 80 mg/kg) and Cu Pro(> 20 mg/kg) significantly decreased(P < 0.05) diarrhea incidence of weanling pigs. There were linear and quadratic increases(P < 0.01) in bile, hepatic,and intestinal Cu concentrations, fecal Cu contents, and plasma enzyme activities(alkaline phosphatase,ceruloplasmin, Cu, Zn-Superoxide dismutase(Cu/Zn SOD), and glutathione peroxidase), whereas plasma malondialdehyde decreased(P < 0.01) linearly and quadratically as dietary Cu level increased. Similarly, pigs fed Cu Pro absorbed and retained more Cu and excreted less Cu than those fed TBCC when supplemented 80 mg/kg and above. Optimal dietary Cu requirements for pigs from 28 to 66 d of age estimated based on fitted broken-line models(P < 0.05) of bile Cu, plasma Cu/Zn SOD and growth performance were 93–140 mg/kg from TBCC, and 63–98 mg/kg from Cu Pro accordingly. According to slope ratios from multiple linear regression, the bioavailability value of Cu Pro relative to TBCC(100%) was 156–263%(P < 0.01).Conclusion: The findings indicated that Cu recommendation from current NRC(5–6 mg/kg) was not sufficient to meet the high req

关键词： Bioavailability Copper Copper proteinate Excretion Piglet Requirement Tribasic copper chloride

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Occurrence and distribution of bisphenol compounds in different categories of animal feeds used in China

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Emerging Contaminants 2021年第1期7卷 179-186页

作者： ruiguo wang Tianjiao Tan Haijun Liang Yuan Huang Shujun Dong Peilong wang Xiaoou Su Institute of Quality Standards and Testing Technology for Agro-Products Chinese Academy of Agricultural SciencesBeijing10081China CHINA FEED Magazine Agency Beijing100710China

Bisphenol compounds(BPs)are of concern worldwide as potential environmental contaminants,and these chemicals may migrate into animal-derived foodstuffs from animal feeds.In this study,12 BPs were analyzed in 7 varieties of animal feed groups totaling 203 samples collected from various provinces in China.6 BPs were found in these feed samples,with a total detection frequency of 75.5%.The total concentration of all BPs(S6BPs)in each type of feed ranged from below the limit of detection to 75.3 ng g^(-1),with an overall mean value of 4.52 ng g^(-1).The frequency of BPs contamination and the S6BPs values were found to be higher in animal-based feeds(P_(frequency)>0.05,P_(concentration)<0.01)than in plantbased feeds.BPA and BPS were the predominant BPs in these feed samples,accounting for(on average)63.9%and 24.6%of the total BPs,respectively.Overall,the mean concentrations of BPA in these animal feeds were much lower than the legal limits set by China and European Union,implying a low direct risk to both animal health and animal-derived food safety.However,the evident risk of the contamination of various animal-derived food items with BPs passed through the feed chain merits further investigation.

关键词： Bisphenol Feed Occurrence Risk UPLC-MS/MS

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Artificial intelligence for the understanding of electrolyte chemistry and electrode interface in lithium battery

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National Science Open 2024年第2期3卷 74-97页

作者： Yawei Chen Yue Liu Zixu He Liang Xu Peiping Yu Qintao Sun Wanxia Li Yulin Jie ruiguo Cao Tao Cheng Shuhong Jiao Hefei National Laboratory for Physical Science at Microscale CAS Key Laboratory of Materials for Energy ConversionDepartment of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026China Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesJoint International Research Laboratory of Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhou 215123China Jiangsu Key Laboratory of Advanced Negative Carbon Technologies Soochow UniversitySuzhou 215123China

Recognizing the critical role of electrolyte chemistry and electrode interfaces in the performance and safety of lithium batteries,along with the urgent need for more sophisticated methods of analysis,this comprehensive review underscores the promise of machine learning(ML)models in this research field.It explores the application of these innovative methods to studying battery interfaces,particularly focusing on lithium metal anodes.Amid the limitations of traditional experimental techniques,the review supports a hybrid approach that couples experimental and simulation methods,enabling granular insights into the formation process and characteristics of battery interfaces at the molecular level and harnessing AI to extract patterns from voluminous data sets.It showcases the utility of such techniques in electrolyte design and battery life prediction and introduces a novel perspective on battery interface mechanisms.The review concludes by asserting the potential of artificial intelligence(AI)or ML models as invaluable tools in the future of battery research and highlights the importance of fostering confidence in these technologies within the scientific community.

关键词： lithium batteries battery interfaces artificial intelligence machine learning electrolyte chemistry

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锂金属负极固体电解质界面膜的理解与改性策略

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科学通报 2024年第10期69卷 1298-1314页

作者：李宛峡李新鹏陈亚威揭育林曹瑞国焦淑红中国科学技术大学化学与材料科学学院材料科学与工程系合肥230026

锂金属负极因具有较高的比容量和较低的电极电势,被认为是最有发展前景的电池负极材料之一.然而,不稳定的锂金属负极固体电解质界面膜和严重的锂枝晶生长问题限制了锂金属负极的实际应用.认识和理解锂金属负极固体电解质界面膜的组成与... 详细信息

锂金属负极因具有较高的比容量和较低的电极电势,被认为是最有发展前景的电池负极材料之一.然而,不稳定的锂金属负极固体电解质界面膜和严重的锂枝晶生长问题限制了锂金属负极的实际应用.认识和理解锂金属负极固体电解质界面膜的组成与结构,并将其与锂金属生长行为建立有效的关联,是解决锂金属负极不稳定问题的关键.本文综述了近年来有关锂金属负极固体电解质界面膜的表征技术和调控策略,并介绍了锂金属软包电池的界面研究现状.本文对锂金属负极的实际应用具有一定的指导意义.

关键词：锂金属负极固体电解质界面膜锂金属枝晶锂金属电池

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基于石榴内涵文化的象征意义对铸牢中华民族共同体意识的认识

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鹿城学刊 2024年第1期36卷 97-99页

作者：全瑞国包头医学院中医学院内蒙古包头014040

石榴籽内涵文化的象征在我国具有极其重要的现实意义,其具有的特质效应是铸牢中华民族共同体意识的显现,深刻认识石榴籽“千房同膜、百籽合一”的文化形塑,从而理解铸牢中华民族共同体意识的深远意蕴,对构建人类命运共同体有着重要的启... 详细信息

石榴籽内涵文化的象征在我国具有极其重要的现实意义,其具有的特质效应是铸牢中华民族共同体意识的显现,深刻认识石榴籽“千房同膜、百籽合一”的文化形塑,从而理解铸牢中华民族共同体意识的深远意蕴,对构建人类命运共同体有着重要的启示价值。

关键词：石榴内涵文化象征意义铸牢中华民族共同体意识认识

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Regulating surface chemistry of separator with LiF for advanced Li-S batteries

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Frontiers in Energy 2022年第4期16卷 601-606页

作者： Shuai wang Fanyang HUANG Shuhong JIAO Yulin JIE Yawei CHEN Shiyang wang ruiguo CAO Hefei National Laboratory for Physical Science at the Microscale CAS Key Laboratory of Materials for Energy ConversionDepartment of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026China

Lithium-sulfur(Li-S)batteries have attracted intensive attention owing to their ultrahigh theoretical energy density.Nevertheless,the practical application of Li-S batteries is prevented by uncontrollable shuttle effect and retarded reaction kinetics.To address the above issues,lithium fluoride(LiF)was employed to regulate the surface chemistry of routine separator.The functional separator demonstrates a great ability to suppress active S loss and protect lithium anode.This work provides a facile strategy for the development of advanced Li-S batteries.

关键词： Li-S batteries LiF functional separator

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Short-and medium-chain chlorinated paraffins in imported commercial dry cat and dog food in China:Concentrations,distributions and risk assessment

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Emerging Contaminants 2020年第1期6卷 268-273页

作者： Shujun Dong Su Zhang ruiguo wang Xiaolong Xia Mengdie Fan Yaxin wang Jie Cheng Xiaomin Li Tong Li Wei Zhang Shulin Wei Yun Zou Peilong wang Institute of Quality Standard and Testing Technology for Agro-Products Chinese Academy of Agricultural SciencesBeijing100081China Inspection and Testing Center of Agricultural and Livestock Products of Tibet Lhasa850000China China MS Center Shimadzu(China)Co.LtdBeijing100020China

Chlorinated paraffins(CPs)are produced in large amounts and used worldwide.Dietary intake is the primary pathway for the exposure of pets to CPs,but limited information is available concerning the potential contamination of pet food by CPs.In the present study,the concentrations and congener group profiles of short-chain CPs(SCCPs)and medium-chain CPs(MCCPs)were assessed in 35 imported commercial dry cat and dog foods collected in China,and the estimated daily intakes of SCCPs and MCCPs for cats and dogs through the consumption of such foods was calculated.The concentrations of SCCPs and MCCPs in the cat and dog foods were determined to be in the ranges of 108e45,300 ng/g(median:1340 ng/g)and 3.8e52,700 ng/g(median:11 ng/g),respectively.The predominant congener groups were C10Cl6 for SCCPs and C14Cl7-8 for MCCPs.The high levels of CPs found in certain pet foods suggest the potential for adverse health effects.

关键词： Short-chain chlorinated paraffin Medium-chain chlorinated paraffin Cat food Dog food Dietary exposure

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格雷夫斯病患者^(131)I治疗后早期甲状腺功能状态对疗效的预测价值

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中华核医学与分子影像杂志 2024年第1期44卷 30-34页

作者：王岩余锋王任飞孟召伟张桂芝张瑞国孙丹阳王萱谭建郑薇天津医科大学总医院核医学科天津300052 空军军医大学第一附属医院核医学科西安710032 同济大学附属第十人民医院核医学科上海200072 天津医科大学总医院空港医院核医学科天津300308

目的研究格雷夫斯病(GD)患者131I治疗后早期甲状腺功能(简称甲功)变化对疗效的预测价值。方法回顾性分析自2017年11月至2019年1月于天津医科大学总医院行单次131I治疗的273例GD患者[男59例、女214例, 年龄(37.4±11.4)岁]的资料, 观察... 详细信息

目的研究格雷夫斯病(GD)患者131I治疗后早期甲状腺功能(简称甲功)变化对疗效的预测价值。方法回顾性分析自2017年11月至2019年1月于天津医科大学总医院行单次131I治疗的273例GD患者[男59例、女214例, 年龄(37.4±11.4)岁]的资料, 观察患者症状、体征及血清学检查[游离三碘甲状腺原氨酸(FT_(3))、游离甲状腺素(FT_(4))]评价疗效[完全缓解(CR)、部分缓解(PR)、无效(NR)或复发], 采用χ^(2)检验、单因素方差分析及最小显著差异t检验比较各疗效组131I治疗后1个月的甲功变化幅度[ΔFT_(3)=(治疗前FT_(3)-治疗后FT_(3))/治疗前FT_(3)×100%;ΔFT_(4)=(治疗前FT_(4)-治疗后FT_(4))/治疗前FT_(4)×100%]及疗效组间的差异。绘制ROC曲线, 分析早期甲功变化对131I疗效的预测价值;行logistic回归分析找出131I疗效的影响因素。结果单次131I治疗后, 273例患者的CR率和总有效率分别为67.03%(183/273)和92.67%(253/273)。1个月时甲功正常组(95例)CR率明显高于甲状腺功能亢进症(简称甲亢)组[178例;81.05%(77/95)与59.55%(106/178);χ^(2)=4.60, P=0.032]。CR组(183例)、PR组(70例)、NR或复发组(20例)治疗后1个月的ΔFT_(3)及ΔFT_(4)差异均有统计学意义且依次降低(F值:15.40、12.54,均P<0.001)。ROC曲线分析显示, ΔFT_(3)≥73.64%和(或)ΔFT_(4)≥59.03%时, 患者获得CR概率较高, 灵敏度分别为84.3%及86.7%, 特异性均为62.6%。Logistic回归分析示, 24 h摄131I率[比值比(OR)=1.095, 95%CI:1.031~1.139]、每克甲状腺组织给予131I剂量(OR=1.562, 95%CI:1.321~1.694)、ΔFT_(3)(OR=1.354, 95%CI:1.295~1.482)、ΔFT_(4)(OR=1.498, 95%CI:1.384~1.608)是影响131I疗效的因素(均P<0.05)。结论 GD患者单次131I治疗后1个月时甲功变化幅度可预测131I疗效。

关键词：格雷夫斯病放射疗法碘放射性同位素甲状腺功能试验治疗结果

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限水条件下灌水量对强筋小麦旗叶衰老特性和籽粒产量的影响

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麦类作物学报 2024年第4期44卷 453-461页

作者：毕经鑫李清瑶蔡瑞国王文政杨敏郭振清张敏河北科技师范学院农学与生物科技学院河北省作物逆境生物学重点实验室河北昌黎066004

为探究灌水量对强筋小麦花后旗叶衰老和籽粒产量的调控效应,以2个强筋小麦品种(中麦998和中麦1062)为供试材料,设置0 m^(3)·hm^(-2)(W_(0))、450 m^(3)·hm^(-2)(W_(1))和900 m^(3)·hm^(-2)(W_(2))3个灌水量(拔节期和开花期各灌水50%)... 详细信息

为探究灌水量对强筋小麦花后旗叶衰老和籽粒产量的调控效应,以2个强筋小麦品种(中麦998和中麦1062)为供试材料,设置0 m^(3)·hm^(-2)(W_(0))、450 m^(3)·hm^(-2)(W_(1))和900 m^(3)·hm^(-2)(W_(2))3个灌水量(拔节期和开花期各灌水50%),分析了不同处理下小麦旗叶叶绿素含量、同化物含量、丙二醛含量、抗氧化酶活性、抗衰老激素含量、蛋白质含量和籽粒产量的差异。结果表明,增加灌水量可延缓强筋小麦花后旗叶衰老。灌浆前中期旗叶叶绿素含量在不同处理间无显著差异,灌浆后期叶绿素含量在W_(2)处理下最高。W_(2)处理下小麦旗叶可溶性糖含量显著高于其他处理;旗叶可溶性蛋白含量在花后0~21 d保持较高水平,在花后21~35 d含量逐渐下降,且W_(1)处理下花后21~35 d旗叶可溶性蛋白含量较W_(0)处理显著提高。灌水量对花后0~21 d强筋小麦旗叶中游离氨基酸含量无显著影响,而在灌浆后期以W_(2)处理最高;与W_(0)处理相比,增加灌水量可显著提高旗叶过氧化氢酶活性、过氧化物酶活性和生长素含量,显著降低丙二醛和脱落酸含量,并且显著延长测定酶活性和激素含量峰值出现时间。随灌水量的增加,籽粒蛋白质含量下降,但产量显著升高。总体来看,在本试验条件下,W_(2)处理(拔节水450 m^(3)·hm^(-2)+开花水450 m^(3)·hm^(-2))能够显著延缓强筋小麦旗叶衰老,在维持较高蛋白质含量同时,获得最高籽粒产量。

关键词：强筋小麦旗叶衰老特性籽粒产量

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