Preparation method of benzene-cyclohexane two-component standard sample
A cyclohexane, two-component technology, applied in the field of detection and analysis, can solve problems such as operation and instrument errors, the purity of benzene and cyclohexane does not meet the requirements, and the purity of the two-component standard sample is affected, and the operation is simple and the output is achieved. big effect
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Embodiment 1
[0015] The preparation of embodiment 1 benzene-cyclohexane two-component standard sample
[0016] (1) 100 grams of benzene and 120 grams of cyclohexane are mixed and heated;
[0017] (2) Real-time detection of volatiles when benzene and cyclohexane is heated by gas chromatography, when the temperature of the mixture of benzene and cyclohexane reaches the azeotropic point of benzene and cyclohexane for 2 minutes, and the volatile components no longer change , to collect volatiles;
[0018] (3) Cool and collect the volatile matter to obtain 180 grams of benzene-cyclohexane two-component standard sample.
[0019] The mass percentage content of benzene in the benzene-cyclohexane two-component standard sample is 46.06%, and the mass percentage content of cyclohexane is 53.92%.
Embodiment 2
[0020] The preparation of embodiment 2 benzene-cyclohexane two-component standard sample
[0021] (1) 100 grams of benzene and 110 grams of cyclohexane are mixed and heated;
[0022] (2) Real-time detection of volatiles when benzene and cyclohexane is heated by gas chromatography, when the temperature of the mixture of benzene and cyclohexane reaches the azeotropic point of benzene and cyclohexane for 2 minutes, and the volatile components no longer change , to collect volatiles;
[0023] (3) Cool and collect the volatile matter to obtain 175 grams of benzene-cyclohexane two-component standard sample.
[0024] The mass percentage content of benzene in the benzene-cyclohexane two-component standard sample is 46.07%, and the mass percentage content of cyclohexane is 53.92%.
Embodiment 3
[0025] The preparation of embodiment 3 benzene-cyclohexane two-component standard sample
[0026] (1) 100 grams of benzene and 130 grams of hexanaphthene are mixed and heated;
[0027] (2) Real-time detection of volatiles when benzene and cyclohexane is heated by gas chromatography, when the temperature of the mixture of benzene and cyclohexane reaches the azeotropic point of benzene and cyclohexane for 2 minutes, and the volatile components no longer change , to collect volatiles;
[0028] (3) Cool and collect the volatile matter to obtain 185 grams of benzene-cyclohexane two-component standard sample.
[0029] The mass percentage content of benzene in the benzene-cyclohexane two-component standard sample is 46.06%, and the mass percentage content of cyclohexane is 53.93%.
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