After samples were derived by BSTFA, GC-MS took metoprolol as the internal standard substance and made a qualitative and quantitative test. 样品经双甲基硅烷三氟乙酰胺衍生后,以美托洛尔为内标物,用气相色谱-质谱联用仪进行定性定量分析。
Preparation of Chromatography Standard Substance N-Methyl-p-Nitroaniline 色谱用基准物N-甲基对硝基苯胺的制备
Regular Inspection onto Standard Substance of Indoor Environment Measuring Test House 室内环境检测试验室标准物质的期间核查
After testing the national standard substance ( GBW07416) of soil available composition, the analytical results are nearly in accord with standard values. 通过对国家标准物质土壤有效态的测试,结果与标准值基本一致,测得值都在标准值的不确定度范围内。
The content of flavonoids in waste liquid of alcohol production from sugarcane molasses was determined by spectrophotometry using rutin as standard substance. 以芦丁为标准物质,用分光光度法测定了甘蔗糖蜜酒精废液中黄酮类化合物的含量。
Based on analyzing the fixed value of the coal ash fusibility standard substance, the uncertainty about the standard value of the coal ash fusibility standard substance was analyzed and quantitated in this paper. 通过对煤灰熔融性标准物质定值的分析,分析和量化了煤灰熔融性标准物质标准值的不确定度。
The result of stability test for two years showed that the developed organo-sodium standard substance was stable and reliable, and could meet the need of actual determination. 同时进行为期2年的稳定性实验,结果表明自制的有机钠标准物质稳定可靠,可以满足实际测定需要。
A series of standard solution are prepared from artificial seawater and the standard substance. 用人工海水和标准物质配制成系列标准溶液。
The kinematic viscosity coefficients of pure water which is the standard substance to calibrate viscosity measurement system were measured to verify the accuracy and reliability of the experimental system. 采用粘度测量系统标定的标准物质&纯水,通过测量其运动粘度,对该测量系统进行了检测。
Guarantee the uniformity of standard substance for chemical analysis methods 冶金化学分析用标准物质均匀性保证
Environment standard substance is key to the reliability of environmental monitor data. It is difficult to develop water environment standard substance. 环境标准物质对于环境监测数据的可靠性是非常重要的,水环境标准物质的研制是困难的。
The Article outlines application for the environment standard substance in the environment monitoring and analyzes the problems that environment standard substance and application are now existent and its future development. 文章介绍了环境标准物质在环境监测中的具体应用,分析了我国环境标准物质与应用之间目前存在的问题及环境标准物质未来的发展。
Research on Environment Standard Substance 环境标准物质的研究
Through the analysis of()~ 1H-NMR and HPLC, and with the comparison of the standard substance, the curcumin with the purity of 94.06% was obtained. 通过外标物的对照,1H-NMR进行结构鉴定,HPLC进行纯度分析,确定得到的物质为姜黄素,纯度为94.06%。
It was first isolated from Radix Polygalae ( Yuanzhi). Using polygalic acid as a standard substance, quality standard of Radix Polygalae ( Yuanzhi) was studied. 以远志酸(Polygalicacid)为对照品,对远志药材的定性、定量分析方法进行了研究。
And the result of standard substance ( poplar leaves) is within the limits of reference. 同时测定的杨树叶标准物质中铅和汞的含量在标准参考值范围内。
The analytical flow path, oxidant and standard substance adopted in the method are all established through experiments. 实验所采用的流路节省试剂,氧化剂在所采用的分析条件下对所选标准物质具有高的氧化率。
A handy method of phase quantitative analysis, i. e. a self-standard K value method, has been used in the paper. It is not required to add any standard substance into the analysed sample, so the accuracy of the analysis is increased. 本文采用了合金中多种物相定量分析的简便方法,即自身标准K值法~(1,2),此方法无须向被分析样品中加入标准物质,从而提高了分析准确度。
How to Improve the Quality of Chemical Products with standard Substance 如何用标准物质提高化工产品质量
This paper introduced the definition, function, grade, classification and characteristics of standard substance and its vital role in the establishment, verification and implement of standard and chemical production. 介绍标准物质的定义,作用及特点。标准物质在产品标准制定,验证,实施和化工生产过程中的重要作用。
How to use standard substance to improve accuracy of product determination and quality were also presented. 标准物质的等级与分类介绍,以及如何正确使用标准物质提高化工产品分析测试结果的准确度,提高产品质量。
Analyze the production laboratory characteristic, review the function of standard substance and how to manage and use the standard substance. Which make for the enterprise production and quality monitoring. 从标准物质的使用与管理角度出发,分析了生产实验室的特点,阐述了标准物质的作用以及生产实验室如何正确管理与使用标准物质,有利于指导企业生产和产品的质量监控工作。
Analysis of standard substance human hair 标准物质人发的定量分析
The development of organo-copper standard substance 有机铜标准物质的研制
Evaluation of uncertainty about the fixed value of the coal ash fusibility standard substance 煤灰熔融性标准物质定值不确定度评定
The application and future development of environment standard substance 环境标准物质的应用及未来发展
This paper discussed the determination method of solid decompound enthalpy with oxygen bomb calorimeter. After the solid sample and standard substance were accurately quantified and uniform mixed, and the pressed piece was put into the oxygen bomb and combustion. 探讨了利用氧弹量热计测定固体物质分解焓的方法,准确称取一定量的固体样品和基准物质,均匀混合后压片,放入氧弹量热计燃烧,记录燃烧前后时间和氧弹量热计温度变化数据。
Determination of reference value and establishment of quality control system: Discrimination of the reference values of test results was determined, based on the test results of positive standard substance with the highest infection rate of HPV 16 as a positive quality control product of detection system. 参考值确定及质控体系建立根据阳性标准品检测结果,确定判别检测结果的参考值,并以感染率最高的HPV16型作为检测系统的阳性质控品。
The test results of plasmid standard substance showed that this method can be accurate HPV genotyping. 质粒标准品的检测结果证明该方法可对HPV准确分型。
But there are no standard substance in our nation, so the synthesis of R-methotrexate was studied in this paper. 由于国内没有R-甲氨蝶呤的标准品,为满足质量控制的需要,本论文对其合成进行了研究。