搜索结果: 1-15 共查到“知识库 光度分析”相关记录68条 . 查询时间(2 秒)
Aptamer-Mediated Chemiluminescence Detection of Prion Protein on a Membrane Using Trimethoxyphenylglyoxal
Aptamer-Mediated Chemiluminescence Detection Prion Protein Membrane Using Trimethoxyphenylglyoxal
2010/9/13
Effective recognition and quantitative analysis of the prion protein are important in drug discovery and diagnosis for prion diseases, such as bovine spongiform encephalopathy and Creutzfeldt-Jakob di...
Spectrophotometric Determination of Trace Phosphate Ions by Amplitude-Modulated Flow Analysis Coupled with Malachite Green Method
Spectrophotometric Determination Trace Phosphate Ions
2010/9/14
An amplitude-modulated flow analysis coupled with lock-in detection is proposed for the determination of trace phosphate. The flow rate FS of sample solution is varied in response to a periodic signal...
Chemical Effects of CeLγ4 Emission Spectra for Ce Compounds
Chemical Effects CeLγ4 Emission Spectra Ce Compounds
2010/9/15
High-resolution CeLγ4 emission spectra of CeF3, Ce2S3, CeF4, and CeO2 have been measured using a multicrystal, multidetector spectrometer. The spectra exhibited substantial differences depending on th...
Chemiluminescent ELISA for the BTEX Determination in Water and Soil
Chemiluminescent BTEX Determination Water and Soil
2010/9/14
An indirect competitive chemiluminescence enzyme-linked immunosorbent assay (CL-ELISA) for the determination of benzene, toluene, ethylbenzene, and ortho-, meta-, para-xylenes (BTEX) in soil and water...
Determination of Water Content in Organic Solvents by Naphthalimide Derivative Fluorescent Probe
Determination Water Content in Organic Solvents Naphthalimide Derivative Fluorescent Probe
2010/9/13
A new fluorescence dye, N-amino-4-(2-hydroxyethylamino)-1,8-naphthalimide (AHN), based on 4-bromo-1,8-naphthalic anhydride was synthesized as a fluorescence probe for determining water content in orga...
L-Cysteine-capped CdTe Quantum Dots as a Fluorescence Probe for Determination of Cardiolipin
L-Cysteine-capped Determination Cardiolipin
2010/9/15
This paper described the investigation of surface-modified quantum dots (QDs) as a fluorescence probe for the detection of cardiolipin. A single-step method for preparation of non-toxic and photo-stab...
为了能够快速无损地鉴别卷烟的真伪,应用傅立叶变换近红外(FT-NIR)光谱分析技术结合相似度匹配的定性分析方法,以来自红云红河烟草(集团)有限责任公司云烟(印象)、云烟(软珍品)和云烟(紫)3个牌号卷烟各50批(共1000支)烟支样品的近红外漫反射光谱数据为基础,利用TQ统计软件分别建立以上牌号烟支的相似度匹配鉴别模型,并对建模参数和模型的鉴别效果进行了评价.结果表明,云烟(印象)、云烟(软珍品)...
Spectrophotometric Determination of Traces of Platinum with 5-Chloro-2-hydroxythiobenzhydrazide after Extraction into Molten Naphthalene
Spectrophotometric Determination Platinum 5-Chloro-2-hydroxythiobenzhydrazide
2010/9/17
Platinum(IV) can be determined spectrophotometrically with 5-chloro-2-hydroxythiobenzhydrazide on extraction into molten naphthalene from the aqueous phase with pH 2.2 − 6.0. Beer’s law is obeye...
Micellar-mediated Extractive Spectrophotometric Determination of Hydrogen Sulfide/Sulfide through Prussian Blue Reaction: Application to Environmental Samples
Micellar-mediated Extractive Spectrophotometric Determination Hydrogen Sulfide Prussian Blue Reaction
2010/9/17
A sensitive surfactant-mediated extractive spectrophotometric method has been developed, based on the reaction of ferric iron with sulfide to form ferrous iron and its subsequent reaction with ferricy...
利用壳聚糖对Ｃｕ＾２＋的选择性吸附，以壳聚糖制膜，对在ｐＨ１０．０的ＮＨ３－ＮＨ４Ｃｌ缓冲溶液中，Ｃｕ＾２＋与锌试剂形成的络合物进行选择性吸附，分光光度法测定。在１．０￣４．０μｇ·ｍＬ＾－１Ｃｕ＾２＋－锌试剂络合物浓度范围内，呈良好的线性关系，相关系数０．９９９２，最低检测限为０．３μｇ·ｍＬ＾－１，本方法应用于工业电镀液中Ｃｕ＾２＋含量的测定，结果满意。
富硒蛹虫草中硒多糖的分离与分析
硒 富硒蛹虫草 硒多糖
2009/10/29
在对人工栽培的富硒蛹虫草中分离提取了水溶性硒多糖，富硒蛹虫草硒多糖的分离纯化方法是采用水提醇沉工艺，粗硒多糖得率为5.76%。系统研究了富硒蛹虫草硒多糖的浸提、纯化、分离条件，苯酚硫酸法测定了富硒蛹虫草的多糖含量为47.5%，分子荧光法测定硒多糖中含硒量为92.3 mg·kg-1。
双波长负吸收催化光度法测定痕量亚硝酸根及其反应机理的研究
吖啶橙 亚硝酸根 溴酸钾
2009/10/28
采用负吸收光谱校正技术，研究了在磷酸介质中，溴酸钾存在下，亚硝酸根与吖啶橙反应的吸收光谱。基于负吸光度值或负吸光度之和AT在一定范围与亚硝酸根浓度呈线性关系，建立了双波长负吸收催化光度法测定亚硝酸根的新方法，线性范围1.0×10-5～5.0×10-7 mol·L-1，用于环境水样中亚硝酸根的测定获得十分满意的结果。依据亚硝酸根浓度与吖啶橙浓度间没有一定的比例关系，负吸光度AT值与时间呈线性关系，认...
用分光光度法测定白土的吸蓝量
白土 吸蓝量 分光光度法
2009/10/26
用分光光度法替代“滴定法”测定白土的吸蓝量。对测定过程中的主要影响因素(亚甲基蓝加入总量、缓冲液加入量、煮沸时间、吸附时间等)进行了实验研究，表明分光光度法测定白土吸蓝量是可行的。
分光光度法测定二氧化铀中微量硝酸根
分光光度法 二氧化铀 硝酸根离子 靛蓝二磺酸钠
2009/9/23
基于硝酸根离子对靛蓝二磺酸钠(IC)的褪色反应，建立了一个简单、快速、选择性好的二氧化铀产品中硝酸根离子的测定方法。在610 nm波长处，NO3－在0.20～1.00 mg/L 范围内与靛蓝二磺酸钠吸光度的减小值呈线性关系，线性回归方程为y=0.297 5x +0.020 5, r= 0.999 39，相对标准偏差(sr)优于10%，加标回收率在93%～106%。该法可用于测定二氧化铀产品中微...