Method for stably detecting content of antioxidant 168
A stable detection and anti-oxidant technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problem of low addition amount, and achieve the effect of strong adaptability and simple conversion
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Embodiment 1
[0022] A method for stably detecting the content of antioxidant 168, comprising the steps of: measuring the content of antioxidant 168 and antioxidant 168 oxides in the detection matrix, and the content of antioxidant 168 is based on the determined content of antioxidant 168 and the content of antioxidant 168 Oxygen 168 oxide content calculation.
[0023] Antioxidant 168 has a phosphorous acid structure and is extremely unstable. In a stability investigation, the content of antioxidant 168 dropped sharply by 50% after 24 hours, and the prepared liquid needed to be put on the machine within 1 hour, which brought great trouble to the content detection. Through the research, the content of the antioxidant 168 oxide (tris(2,4-di-tert-butylphenyl)phosphate) was observed to increase continuously by using the self-made method. Through the conversion superposition of the two and the correction of 168 oxide, the sum of the concentration of 168 and 168 oxide can maintain a relatively s...
Embodiment 2
[0036] A method for stably detecting the content of antioxidant 168, comprising the steps of: measuring the content of antioxidant 168 and antioxidant 168 oxides in the detection matrix, and the content of antioxidant 168 is based on the determined content of antioxidant 168 and the content of antioxidant 168 Oxygen 168 oxide content calculation.
[0037] The present invention uses liquid chromatography to respectively measure the content of antioxidant 168 and antioxidant 168 oxides in the detection matrix, and the liquid chromatography conditions are: chromatographic column: C18, 5μm, 4.6mm×250mm; mobile phase: water: tetrahydrofuran: acetonitrile = 1:3:6, flow rate: 1.5ml / min; wavelength: 280nm for quantification of antioxidant 168, 266nm for antioxidant 168 Quantification of oxides; injection volume: 20 μl. The present invention selects dual-wavelength quantification, selects different wavelengths for antioxidant 168 oxide and antioxidant 168 for quantification, obtains ...
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