Industrial Acrylonitrile—Determination of Purity and Impurity Content by Gas Chromatography (3)

8 Expression of analysis results

8.

8.

Where:

A _i ——the peak area of ​​the measured component;

f _i — the relative correction factor of the measured component;

m _s ——the mass of the internal standard substance in the sample, in grams (g);

A _s —the peak area of ​​the internal standard;

m—The mass of the sample, in grams (g)

8.

w=100.

Where:

∑w _i —The mass fraction of total impurities determined by this method, expressed in %:

ws—The mass fraction of total impurities determined by GB/T6283, GB/T7717.

8.

8.

8.

9 Repeatability limit

In the same laboratory, the absolute difference between the two independent test results obtained by the same operator using the same equipment, using the same test method, and independently testing the same object in a short time should not exceed the following repetitions The limit (r), assuming that the repeatability limit (r) does not exceed 5%:

10 report

The report should include the following contents;

a) All information about the sample, such as sample name, batch number, sampling location, rice sample date, fruit sample time, etc.

b) Number of this part;

c) Analysis results;

d) Details and descriptions of any abnormal phenomena observed in the measurement;

e) the name of the analyst and analysis date