internal standard

Methods The quick and sensitive HPLC-UV method was established with carbamazepine acting as internal standard. After the rats were douched with dodder seed, drug-containing serum samples of rats were separated and measured on C18 reverse-phase chromatography column after being liquid to liquid extracted.

方法采用高效液相色谱-紫外检测法（HPLC-UV），以卡马西平为内标，菟丝子灌胃给药后，大鼠含药血清样品经液-液萃取后在C18反相色谱柱上进行分离测定。

X-Ray Fluorescent Scattered Internal Standard Method for Determination of Zirconium and Hafnium in Niobium base Alloy

X射线荧光散射内标法测定铌合金中的锆

Objective: To develop a GC/ MS method for the determination of 3-chloropropane-1,2-diol ( 3-MCPD) in food using deuterated internal standard.

目的：建立以氘代同位素内标测定食品中3-氯-1,2-丙二醇的GC/MS方法。

Function and application of surrogate and internal standard in environmental sample analysis

替代物和内标物在环境样品分析中的作用及应用

The column temperature was increased by programming with the sample entrance and detector being at250 ℃. The carrier gas was nitrogen. The flow rate was1ml/ min and shunting ratio was25 ∶ 1.N-octyl alcohol was used as internal standard.

方法色谱柱为DB-WAX毛细管柱，柱温采取程序升温，进样口及检测器温度为250℃，载气为氮气，流速为1ml/min，分流比为25∶1，内标为正辛醇。

Through internal standard method to analyze the purity of tsingtao beer

气相色谱内标法分析啤酒中乙醇的含量

Methane aromatization on internal standard system or enlarged product collection system analysis of energy recovery of freeze-dryer

甲烷芳构化的内标分析法与放大回收实验冻干机的能量回收

Determination of EPA and DHA in Deep Sea Fish Oil by Gas Chromatography using Internal Standard Method

气相色谱内标法测定深海鱼油中的EPA和DHA

A GC-MS method was developed for the identification and quantitative determination of β-estradiol residues in the muscle tissues of various fishes/ shellfishes, using deuterated internal standard.

建立了不同鱼贝类肌肉组织中以氘代同位素为内标测定β-雌二醇残留量的气相色谱-质谱（GC-MS）方法。

Determination of dehydroacetic acid and sorbic acid and benzoic acid in food by gas chromatography internal standard method

气相色谱内标法测定食品中防腐剂脱氢乙酸、苯甲酸和山梨酸

Third, elaborating standard of martially the internal standard of misrepresentation and suggesting that China should learn Investor decision-making standard from the United States.

再次，在虚假陈述行为的内在标准上，剖析虚假陈述行为中的重大性认定标准，提出我国应借鉴美国采用投资者决策标准。

Research on analytical conditions on polymetal elements with internal standard method

内标法测定多金属元素分析条件的研究

The sample is decomposed with H_3PO_4, Tm is used as an internal standard element.

苯甲酸钠为内标。试样用磷酸分解，Tm被选作内标元素。

Objective To develop a internal standard A in NOVA 16 analyzer reagent pack.

目的：研制NOVA16全自动急诊生化分析仪试剂包内标准A液。

The LC-MS/ MS methods for determining the concentration of SBT in rat plasma and in Beagle dog plasma were established using terbutaline as internal standard with LOQ of 0.10 ng/ ml and 0.05ng/ ml, respectively.

建立LC-MS／MS法测定大鼠血浆及Beagle犬血浆中SBT浓度，以特布他林为内标，方法专属性强、灵敏度高，定量限分别为0.10ng／ml和0.05ng／ml；

Methods: The HPLC method was used, chromatography conditions were C 18V column, binary solvent-delivery gradient elution, diode-array detector, internal standard ( paeoniflorin) were taken as the criteria for quality control.

方法：HPLC法；采用C18V反相色谱柱，二元梯度洗脱，二极管阵列检测器，以芍药苷为内标作为相对标准。

Methods: After the herbs was extracted and refined, micropills was produced with pectin selected as coating material and thallium monochloride was as internal standard substance.

方法：药物提取，精制后，制成微丸，选取经特殊处理果胶为包衣材料，氯化亚铵作为放射性内标物。

The configuration isomers of tetramethrin and permethrin were seperated completely. The resolution of alpha-cypermethrin from cypermethrin isomers was 1.10. internal standard was used for quantitation.

在所选择的操作条件下，氯氰菊酯中α-氯氰菊酯的最小分离度达1.10，胺菊酯、氯菊酯的2对顺反异构体也得到完全分离。

Determination of export magnesite by ICP-AES and concentration ratio variable internal standard method

ICP－AES浓度比可变内标法测定出口镁砂

Dissolved the samples by methanol, with diethyl phthalate as internal standard, the content of diniconazole is separated and determined by means of Liquid Chromatography under high pressure on the ODS column and ultraviolet detector.

烯唑醇含量分析试样用甲醇溶解，以邻苯二甲酸二乙酯为内标物，在ODS柱和紫外检测器上对试样中的烯唑醇进行高压液相色谱分离和测定。

The methods to deal with soil sample and calculate the residual concentration and of PCBs were established. Hexachlorobenzene was introduced as internal standard of recovery.

确立了含PCBs土壤样品的预处理方法，以六氯苯为回收率内标，建立了准确分析土壤样品中PCBs浓度的方法；

A gas chromatographic analysis method was developed, using dibutyl o-phthalate as the internal standard, determining the contents of two active ingredients in the emulsion mixed by triazophos and BPMC.

本文提出用气相色语法，以邻苯二甲酸二丁酯作内标，在同一条件下同时测定唑威乳油中的三唑磷和仲丁威的含量。

METHODS: A single 2 mg dose of granisetron tablet or nasal spray was given to beagles in a randomized crossover design. The drug plasma concentrations were determined by HPLC fluorescence method using bisoprolol fumarate as internal standard.

方法：比格犬采用随机、自身交叉给药，分别口服片剂、鼻腔给喷雾剂，用HPLC荧光方法测定格拉司琼血浆浓度。

A gas chromatographic method for the determination of dimethyl carbonate ( DMC) purity and its impurities has been developed with HP-Wax polar capillary column and thermal conductivity detector. Cyclopentanol was used as an internal standard.

提出用HP-Wax强极性毛细管柱分离，热导检测器检测，以环戊醇作内标定量，同时测定碳酸二甲酯纯度及其杂质。

as our experimental results showed, the matrix interference can be compensated by proper selection of internal standard elements, so that the excitation energy level and the atomic or ionic radius of the standard can match those of the analyte.

实验结果表明，只要选择合适的内标元素，可以校正基体干扰。

PABA as Internal Standard in Method of HPLC for Determining 5-FU Concentration in Serum

HPLC测定5-FU方法中内标物对氨基苯甲酸的研究

Tetracaine was used as a internal standard.

选择丁卡因作为内标准品。

Convert customer BOM into internal standard format, then apply for internal Material Part No. in system.

将客户提供的bom作内部格式标准化, 并在系统中申请内部物料号.

Determination of Clarithromycin With HPLC Internal Standard Method

HPLC内标法测定克拉霉素含量

Determination of dimer and styrene in butadiene by internal standard gas chromatography

气相色谱内标定量法分析丁二烯中二聚体和苯乙烯含量