analytical reagent 英语

analytical reagent 英语

Analytical reagents are chemicals that are used in

analytical chemistry to perform various tests and analyses.

These reagents are of high purity and are produced specifically

for laboratory use. They are used to identify and quantify the

composition of a sample, determine the presence of certain

substances, or measure the physical and chemical properties of

a substance.

Analytical reagents can be classified into two main

categories: qualitative and quantitative reagents.

Qualitative reagents are used to identify the presence or

absence of a particular substance in a sample. Examples of

qualitative reagents include litmus paper, Benedict's reagent,

and Tollens' reagent.

Quantitative reagents, on the other hand, are used to

measure the amount of a specific substance in a sample. Examples

of quantitative reagents include gravimetric reagents,

volumetric reagents, and colorimetric reagents.

Analytical reagents must be of high purity to ensure

accurate and precise results. Impurities in the reagents can

affect the results of the analysis, leading to inaccurate

conclusions. Therefore, manufacturers of analytical reagents

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must follow strict quality control procedures to ensure that

the reagents are free of contaminants and meet the required

specifications.

In conclusion, analytical reagents are essential tools in

analytical chemistry. They are used to perform various tests

and analyses to determine the composition, presence, and

physical and chemical properties of a substance. It is

important to use high-quality analytical reagents to ensure

accurate and reliable results.。

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