HPLC (high performance liquid chromatography) method for determining ten synthetic colorants in cosmetic
A technology for synthesizing coloring agents and cosmetics, which is applied in the field of chromatographic analysis of cosmetics, can solve problems such as being susceptible to interference, high price, and low sensitivity, and achieve the effects of less interference, accurate results, and high sensitivity
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Embodiment 1
[0032]A red nail polish, accurately weighed 0.50 g sample into a 50 mL plastic centrifuge tube, and operated according to the above method. As a result, Pigment Red 57: 963.6 mg / kg, Pigment Orange 5: 125.1 mg / kg, and the rest of the colorants were not detected. Check out. The chromatogram of the sample at 485 nm is shown in figure 2 .
Embodiment 2
[0034] A kind of red nail polish, accurately weighed 0.50 g sample into a 50 mL plastic centrifuge tube, and operated according to the above method, the results detected Pigment Red 57: 138.4 mg / kg, Pigment Red 53: 82.2 mg / kg, and the rest of the colorants were not Check out. The chromatogram of the sample at 485 nm is shown in image 3 .
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