化学发光免疫分析与酶联免疫分析法检测水产品药物残留的比较研究   总被引：1，自引：0，他引：1  

萨仁托雅  张峰  郑有虎  卢亚楠 《大连海洋大学学报》2014,(5)

对检测水产品中呋喃唑酮代谢物( AOZ)和氯霉素( CAP)药物残留的两种方法---化学发光免疫分析( CLEIA)和酶联免疫分析( ELISA)法进行了比较研究。结果表明：两种药物残留检测中, CLEIA分析方法的线性范围和检出限均优于ELISA法,且两种免疫分析法的添加回收率均具有很好的相关性;用CLEIA法检测AOZ的检出限为0.01μg/kg,线性范围为0.01~2.56μg/kg,检测CAP的检出限为0.016μg/kg,线性范围为0.025~6.400μg/kg;用ELISA法检测AOZ的检出限为0.1μg/kg,线性范围为0.10~1.62μg/kg,检测CAP的检出限为0.05μg/kg,线性范围为0.05~4.05μg/kg;用CLEIA法检测CAP的批内变异系数( RSD)为5.5%~11.3%,批间RSD为12.3%~20.9%,检测AOZ的批内RSD为6.6%~11.1%,批间RSD为15.6%~18.3%。研究表明,用CLEIA法检测水产品药物残留较ELISA法检出限低、线性范围宽,虽然检出CAP和AOZ的变异系数均高于ELISA法,但仍符合《兽药残留酶联免疫试剂(盒)备案参考评判标准》的规定。  相似文献   

Comparing the values of progesterone in the blood of bitches as measured with a chemiluminescence immunoassay and a radioimmunoassay          下载免费PDF全文

Johan O. Nöthling  Kurt G. M. De Cramer 《Reproduction in domestic animals》2018,53(5):1136-1141

A ¹²⁵I radioimmunoassay (RIA) has long been used to determine the value of progesterone in serum or plasma of bitches but was discontinued in 2014. A chemiluminescence immunoassay (CLIA) gained prominence since 2003 to determine the value of progesterone in serum of bitches but the assay changed in 2012. This study assessed the agreement between progesterone values obtained with RIA in plasma (progRIA) and with the post‐2012 CLIA (progCLIA) in the serum of bitches. ProgCLIA was determined in 110 serum samples from 40 bitches in pro‐oestrus or early oestrus and compared to progRIA in plasma samples collected from the same bitches at the same time, where progRIA had a uniform distribution between 0.5 and 25 nmol/L. Two replicate analyses of each serum or plasma sample were simultaneously done in the same assay. For RIA and CLIA, the intra‐assay CVs were 5.85% and 6.70% and the interassay CVs 8.45% and 9.16%. For RIA and CLIA the progesterone values obtained with replicate analyses differed by as much as 11%–31% in 25% of samples. On average, the value of progCLIA was 85% of that of progRIA (95% CI 58%–112%, n = 110), with 88% of progCLIAs being lower than the progRIAs. This study shows that RIA and CLIA may yield replicate values that differ by as much as 11%–30% in about a quarter of samples analysed, necessitating replicate analyses if precise values are required. The study provides an equation by which to estimate progCLIA from progRIA.  相似文献   

流动注射钴离子催化化学发光法测定环境水体中痕量2-氯苯酚     

王绍领 《湖北农业科学》2016,(12):3179-3181

在弱碱性介质中,过氧化氢能使发光试剂鲁米诺产生化学发光,Co2+对该化学发光体系具有很好的催化作用,2-氯苯酚的添加能增强该化学发光反应的发光信号,建立了测定2-氯苯酚的流动注射化学发光分析法。结果表明,2-氯苯酚产生的相对化学发光信号强度与其浓度在1.0×10-7~4.0×10-5 mol/L范围内呈线性关系,方法的检出限(3S/N)为5.0×10-8 mol/L。线性方程为y=1 492.9x-1 292.9,R2=0.990 6,对浓度为4.0×10-6 mol/L的2-氯苯酚进行11次平行测定,相对标准偏差为2.98%。  相似文献   

牙鲆补体C3 mRNA杂交保护检测技术     

张峰  徐晓宇  张莉  吴迪 《大连水产学院学报》2009,(Z1)

应用杂交保护检测(Hybridization Protection Assay,HPA)技术研究建立检测补体C3 mRNA方法。选择牙鲆Paralichthys olivaceus补体C3 mRNA(Genebank accession no.AB021653)设计为长度24个碱基寡核苷酸片断的AE标记寡核苷酸探针(位置=2327-2350,5 CGG GAG TTG TTTG#TG GGTTGA CAC 3),寡核苷酸探针合成过程中在#位加入烷基胺连接臂连接AE。人工合成与探针互补的标准靶寡核苷酸(5 GTGTCA ACC CAC AAA CAA CTC CCG 3)。AE标记寡核苷酸探针活性为6×104RLU/pmol。杂交时间为50 min时,在1×10-3~4×102pmol/mL探针浓度范围内,AE标记探针浓度与发光值之间具有良好的线性关系(R2=0.9996);标准靶寡核苷酸标准曲线说明,在标准靶寡核苷酸浓度为0~320 pmol/mL(含量为0~3200 fmol)时,具有良好的线性关系(R2=0.9922)。  相似文献   

气相转化-化学发光法测定土壤中的亚硝态氮     

王琳  王睿  郑循华  张丽娟 《农业环境科学学报》2017,36(9):1916-1924

试验探究了将亚硝态氮(NO_2~-)还原转化为一氧化氮(NO)气体与化学发光法检测NO相结合的方法(气相转化-化学发光法,简称NC法)对土壤NO_2~-含量测定的适用性。在室温条件下,采用浓度为50%的冰醋酸提供酸性条件,以抗坏血酸为还原剂,将NO_2~-还原为NO气体,生成的NO被高纯氮气载入化学发光法氮氧化物分析仪的NO检测通道,实时记录NO信号值并积分信号峰面积,通过已知NO_2~-浓度系列的标准曲线,确定样品中的NO_2~-浓度。结果显示:NO信号值的峰面积与样品的NO_2~-浓度显著正相关(P0.01),线性检测范围为2~500μg·L~(-1)(以纯N计,下同),检出限为2μg·L~(-1),对土壤NO_2~-浓度的检出限为10μg·kg-1(以水土比为5∶1计),优于比色法的检出限15μg·kg-1;重复测定10次50μg·L~(-1)标准溶液的峰面积变异系数为1.2%,精度为1.2μg·L~(-1)(95%置信区间),对应的土壤NO_2~-浓度检测精度为6μg·kg-1,优于比色法的检测精度11μg·kg-1;检测已知浓度NO_2~-的回收率为90%~97%。与比色法相比,NC法测定酸性土壤NO_2~-浓度的准确度相当,精度更优,但该方法测定碱性土壤NO_2~-浓度的结果偏高,可能是碱性土壤中大量的Ca~(2+)、SO_4~(2-)和CO_3~(2-)对测定有干扰,而且NC法测定NO_2~-浓度的分析时间较比色法长,单个样品需8~15 min。  相似文献   

Modulating effects of acepromazine on the reactive oxygen species production by stimulated equine neutrophils     

Sandersen C  Mouithys-Mickalad A  de la Rebière G  Deby G  Serteyn D  Franck T 《Veterinary anaesthesia and analgesia》2011,38(2):83-93

ObjectiveTo investigate the effect of acepromazine (ACP) on reactive oxygen species (ROS) production by stimulated equine neutrophils.Study designEx vivo biochemical experiments.AnimalsIsolated neutrophils from healthy untreated horses.MethodsNeutrophils were incubated with ACP at concentrations of 10^?4, 10^?5 or 10^?6 m and then stimulated with phorbol-myristate-acetate (PMA) before measurement of lucigenin-enhanced chemiluminescence (CL). In a second experiment neutrophils were incubated in the presence of α-keto-γ methylthiobutyric acid (KMB) and treated with ACP at concentrations of 10^?4, 10^?5 or 10^?6 m. Subsequent PMA stimulation lead to neutrophilic ROS production and decomposition of KMB to ethylene, which is measured by gas chromatography. Electron paramagnetic resonance-spin trapping (EPR) analysis was performed with PMA-stimulated neutrophils in the presence of ACP (10^?4, 10^?5 or 10^?6 m) directly added to the cell suspension. In the second experiment, the same concentrations of ACP were pre-incubated with neutrophils, then centrifuged to eliminate the excess of ACP and re-suspended in phosphate buffer before stimulation with PMA. In all experiments, the results of ACP-treated and ACP-untreated stimulated neutrophils were compared.ResultsOverall, results obtained with lucigenin-enhanced CL and KMB oxidation were in agreement with those seen in electron paramagnetic resonance spectroscopy. Acepromazine induced a dose-dependent inhibitory effect on neutrophilic ROS production. Electron paramagnetic resonance also showed, at high ACP concentration, the appearance of a cation radical derived from ACP. In contrast, electron paramagnetic resonance study performed with pre-incubated neutrophils showed an important dose-dependent inhibitory effect of ACP.ConclusionThe results indicate that ACP can neutralize O^˙?₂ or its by-products during the stimulation of neutrophils.Clinical relevanceThese findings may have a therapeutic relevance when phenothiazines are used in horses suffering from inflammatory diseases in which neutrophil activation and ROS production are implicated.  相似文献   

玉米赤霉烯酮化学发光免疫分析检测系统设计     

吴才章  刘冬冬  胡良 《农业工程学报》2020,36(17):308-312

为了保障粮食安全,该研究根据玉米赤霉烯酮抗原抗体反应,以及辣根过氧化物酶催化鲁米诺过氧化氢反应产生化学发光,设计一款应用于粮食行业的玉米赤霉烯酮检测系统。采用侧窗型高精度光电倍增管MD983以及16位AD转换芯片,实现化学发光强度信号的准确测量;步进电机驱动旋转精密转台,通过优化步进电机的S型脉冲驱动控制曲线参数,完成转台的高精度定位控制,实现光电倍增管的测试窗口和化学发光孔精确对准;通过精密直线导轨滑台驱动加样器的进给,实现反应液微米量级的准确微量加样。利用竞争性免疫分析方法,使得赤霉烯酮毒素为0μg/kg情况下,化学发光反应具有最大发光量,解决真菌毒素低浓度情况下的检测精度难题。经过试验验证,系统检出限为0.1μg/kg,样品加标回收率在90%以上,标准曲线决定系数为0.996 5,系统检测玉米赤霉烯酮的线性范围为0～60μg/kg。研究表明建立的玉米赤霉烯酮检测系统满足国家粮食行业对于粮食中玉米赤霉烯酮含量检测要求,为真菌毒素检测仪器的国产化提供参考。  相似文献   

Effects of Acepromazine on Equine Polymorphonuclear Neutrophil Activation: A Chemiluminescence Study     

D. SERTEYN  H. BENBAREK  G. DEBY-DUPONT  S. GRULKE  I. CAUDRON  C. DE BY  M. LAMY   《Veterinary journal (London, England : 1997)》1999,157(3):332-335

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饮用水中秋水仙碱含量预警的在线监测方法   总被引：1，自引：0，他引：1  

《湖南农业大学学报(自然科学版)》2015,41(5)

为了防止人为或自然因素引起的饮用水秋水仙碱污染事件发生,探索饮用水中秋水仙碱含量预警的在线监测方法,对流动注射化学发光法测定秋水仙碱含量的影响因素进行优化,建立了一套饮用水中秋水仙碱含量预警的在线监测系统。结果表明:较佳检测条件为泵速1 m L/min、鲁米诺溶液p H 13.20、鲁米诺溶液浓度3.00×10–4 mol/L、铁氰化钾溶液浓度3.00×10–4 mol/L。该方法的线性范围为5.0×10–3~1.0 mg/L,检出限为3.01×10–5 mg/L,RSD为2.78%(n=11)。所建立的预警在线监测系统具有灵敏度高、操作便利、预警实时等特点,可用于对饮用水中因人为因素或自然因素引起的有毒物质污染预警的实时监测。  相似文献   

流动注射化学发光法测定小檗碱   总被引：3，自引：0，他引：3  

李丽清  黄薇  封满良  吕九如 《山东农业大学学报(自然科学版)》2002,33(3):365-367

采用流动注射技术研究了酸性条件下 ,高锰酸钾与小檗碱的化学发光行为 ,对影响化学发光强度的诸因素进行了实验和探讨 ,建立了流动注射化学发光法测定小檗碱的新方法。方法的检出限为 6× 10 - 8g mL ,线性范围为2 .0× 10 - 7～ 8.0× 10 - 5g mL ,对 4.0× 10 - 6g mL小檗碱进行 11次平行测定 ,相对标准偏差为 1.6 %。方法用于测定盐酸小檗碱的含量 ,结果与药典标准方法相一致。  相似文献