Vitamin detector quality control material composition and application thereof
A vitamin and composition technology is applied in the field of quality control of vitamin inspection items, which can solve the problems of high maintenance cost, high technical requirements, complex structure, etc., and achieve the effects of low detection cost, simple and fast operation, and stable chemical properties.
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Embodiment 1
[0022] Embodiment 1 Vitamin detector quality control product composition
[0023] 2,3,5,6-Tetramethyl-1,4-phenylenediamine: salt solution;
[0024] The concentration of 2,3,5,6-tetramethyl-1,4-phenylenediamine is 1μmol / L-500μmol / L;
[0025] The salt solution is sodium sulfate: 0.1μmol / L~3.5μmol / L or sodium chloride 0.1μmol / L~3.5μmol / L or potassium chloride 0.1μmol / L~3.5μmol / L or potassium chloride (purity ≥97% );
Embodiment 2
[0026] Example 2 Measurement of Imprecision
[0027] The vitamin detector quality control products prepared by the vitamin detector quality control product composition of Example 1 were tested continuously for 10 times with three concentration levels of high, medium and low concentration levels, and the mean, standard deviation and variation were calculated respectively. coefficient, (high concentration: 90-125 μmol / L, medium concentration: 40-85 μmol / L, low concentration: 5-35 μmol / L). Inter-day imprecision determination: The three concentrations of the quality control substances were measured once a day for 20 consecutive days, and the mean, standard deviation and coefficient of variation were calculated. Vitamin detector parameter settings:
[0028] Rest time: 5s
[0029] Enrichment time: 0s
[0030] Enrichment voltage: 0s
[0031] Scanning voltage range: -0.1V-0.7V
[0032] Step voltage: 30mV
[0033] Voltage amplitude: 40mV
[0034] Pulse width: 60mV
[0035] Peri...
Embodiment 3
[0046] Example 3 Stability test
[0047] The quality control material was measured once every working day for 6 consecutive months, and the mean and standard deviation of each month were calculated respectively. The results are shown in Table 4.
[0048] Table 4 Stability test
[0049]
[0050] In conclusion, the different indicators detected all meet the requirements of the quality control product, therefore, the solution of the present invention is completely feasible.
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