查询词典 adulterations

With the observation of the outward appearances, it can be known roughly that if the sample was added with adulterations. Since the beeswax dissolves in the benzene but the adulterations, such as gypsum, starch and so on do not, these can be determined. By the verification of acid value and alcohol dissolve ability, the acid or non acid added can be determined. By the change of saponification value, the ester or non ester added can be determined. By the carbonification degree in the concentrated sulphuric acid, the mineral wax, such as paraffin wax added can be determined.

通过样品外观的观察初步定性是否掺有杂质；利用纯蜂蜡在苯中溶解，而掺入的石膏、面粉和淀粉等杂质在苯中不溶而定量鉴定这类杂质；由酸值变化和乙醇溶解物的量，测定掺入的硬脂酸等酸性物质或其它的非酸性物质；由皂化值变化，定量测定掺入的动物脂等酯类物质或其它的非酯类物质；根据蜂蜡中的烃类在浓硫酸中可被炭化，加入的石蜡等矿物蜡不被炭化来测定此类掺杂物。

Therefore, the totle content of uridine, hypoxanthosine, guanosine , adenosine and the content of adenosine can be used as a effective method for quality assess of Cordyceps sinensis .and for distinguishing its adulterations and counterfeits.

混淆品及伪品中亦主要含I、II、III和V，以及少量IV，但四个核苷的总量均小于1.99mg/g，V的含量均低于0.44mg/g。

With above methods an analysis system for the determination simultaneously of the kinds and contents of the adulterations added in the beeswax sample was established.

由此初步建立了一个蜂蜡中多种掺杂物同时存在时各掺杂物的种类和含量测定的分析体系。

On base of liquid synthesis, the influence of various adulterations on calcination of hydrous titanium dioxide is investigated and the connection of various calcination programs and performance of titanium white is explored.

在液相合成的基础上，实验研究了不同掺杂条件对水合二氧化钛煅烧过程的影响，探索了不同煅烧程序与钛白性能之间的关系，制备出了性能优良的钛白原料，可供进一步加工成化纤钛白。

The nucleosides and their bases in Cordyceps sinensis. of different origin and in its adulterations and counterfeits were studied by HPLC. The components and contents of nucleosides and their bases in Cordyceps sinensis.,and in the adulterants and the counterfeits were compared to find the difference among them.

采用HPLC法对不同产地的冬虫夏草中核苷及其核苷碱基进行测定研究，并用该方法测定混淆品及伪品中核苷及核苷碱基的含量，比较正品、混淆品及伪品中核苷及核苷碱基的种类和含量，找出它们之间的差异规律。

HPLC/MS/ MS was used to analyse the nucleosides in Cordyceps sinensis. and its counterfeits and adulterations,which can further verify the components and content of nucleosides and will help to perfect the criterion of quality control for Cordyceps sinensis

运用液质联用技术对冬虫夏草及其混淆品与伪品中核苷成分进行二级质谱的定性定量分析研究，进一步确认核苷成分及测定其含量，完善利用HPLC对冬虫夏草进行质量评价的依据。

Establish the method of HPLC fingerprints for analysing the Cordyceps sinensis. of differ origin or differ batch. The method of fingerprints was accurate and reliable. The high similarity between ten batch samples can futher verify reliability of quality assess studied by HPLC in Chapter 2.At the same time,it can also be applied to the quality control of Cordyceps sinensis .and also provide new reference for distinguishing counterfeits and adulterations.

本课题应用HPLC建立了不同产地不同批次冬虫夏草的指纹图谱测定方法，所建立的指纹图谱具有稳定重复的特点，10批冬虫夏草的高相似度支持了第二章中利用HPLC结论作为冬虫夏草内在质量评定参考的可行性，并可为冬虫夏草与其混淆品及伪品的质量控制提供新参考依据。

Objective: In this parper, we studied the key problems of resolution and determination,which haven,t been solved by HPLC in Cordyceps sinensis.,such as chromatography condition and extraction condition. Using the condition we studied out, we analysed the nucleosides in Cordyceps sinensis . and in its adulterations and counterfeits by HPLC. The purpose is to find the difference between Cordyceps sinensis . and its adulterations, and also to provide a effective method for quality assess of Cordyceps sinensis .

目的：本课题采用高效液相色谱法，通过对冬虫夏草中核苷类成分分离测定中的关键性问题进行考察，解决利用高效液相色谱分析冬虫夏草存在的问题，并利用该条件对冬虫夏草及其混淆品与伪品中核苷类成分进行分析研究，找出冬虫夏草与混淆品及其伪品在成分及含量上的差异，完善冬虫夏草质量评定标准。

There were obvious difference in the characteristic peaks and the uncharacteristic peaks,when compared the adulterations and counterfeits with Cordyceps sinensis ..The relative peak aera and their fluctuate range of. the adulterations and counterfeits had obviously difference when compared to Cordyceps sinensis ..

冬虫夏草混淆品及伪品的高效液相色谱图与冬虫夏草指纹图谱比较，在共有峰以及非共有峰上都有较大差异，混淆品及伪品中各共有峰相对保留峰面积与冬虫夏草有明显差异，且混淆品及伪品相应共有峰的相对保留峰面积波动范围与冬虫夏草相比明显较大。

HPLC/MS/ MS was used to analyse the nucleosides in Cordyceps sinensis .and its counterfeits and adulterations. Compared the samples with the standard samples,the result showed that the main fragment chromatogram were similar.The four nucleosides in Cordyceps sinensis .and its counterfeits and adulterations were identified by MS/ MS.The totle content of uridine、hypoxanthosine、guanosine、adenosine in Cordyceps sinensis .was from 2.473 mg/g to2.830 mg/g ,the content of adenosine was from 0.850 mg/g to1.009 mg/g .

应用HPLC-MS对冬虫夏草及其混淆品与伪品中的四个核苷成分进行二级质谱定性分析，并与对照品进行比较，结果显示，冬虫夏草及其混淆品与伪品均能产生与相应对照品一致的主要碎片离子峰，进一步说明，冬虫夏草及其混淆品与伪品中均含有尿苷、肌苷、鸟苷及腺苷四种核苷成分。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。