Method for detecting acetaminophen and other chemicals in herbal beverage
A technology for acetaminophen and herbal beverages, which is applied in the field of detecting acetaminophen and other chemical drugs in herbal beverages, can solve problems such as inability to supervise the quality of herbal beverages, rapid determination of chemical drugs, etc., and meet high-throughput screening requirements. , The effect of fast detection and simple operation
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[0020] 1) Preparation of herbal beverage sample solution: dissolve the solid herbal beverage with methanol solution, and dilute the liquid herbal beverage with methanol solution to obtain the herbal beverage sample solution;
[0021] 2) Preparation of a series of control sample solutions: first prepare acetaminophen into a standard stock solution with methanol solution, then take several standard stock solutions and dilute to different multiples with methanol solution to obtain a series of control sample solutions;
[0022] 3) making of standard curve: the serial control sample solution is injected in the high-performance liquid chromatograph respectively, obtains chromatogram, measures peak area, is abscissa with the concentration of series control sample solution, and peak area is ordinate, draws standard curve, get the regression equation;
[0023] 4) Determination of herbal beverage sample solution: inject the herbal beverage sample solution into a high-performance liquid ...
Embodiment 1
[0033] A method for measuring the concentration of acetaminophen and other chemical drugs in a solid herbal beverage, comprising the following steps:
[0034] 1) Preparation of herbal beverage sample solution: Grind and mix the solid herbal beverage, weigh 0.3g, add to a 50mL volumetric flask, add methanol solution, ultrasonically extract for 15 minutes, let stand, add water to volume, shake well, filter, Filtrate is herbal beverage sample solution; (the concentration of methanol solution is 550g / L)
[0035] 2) Preparation of a series of control sample solutions: Paracetamol is first prepared into a standard stock solution with a concentration of 50 mg / L with methanol solution, and then 6 parts of standard stock solutions are taken and diluted to different multiples with methanol solution to obtain paracetamol Phenol concentration is successively the series control sample solution of 1mg / L, 5mg / L, 10mg / L, 20mg / L, 30mg / L and 50mg / L; (the concentration of methanol solution is 55...
Embodiment 2
[0056] A method for measuring the concentration of acetaminophen and other chemical drugs in liquid herbal beverages, comprising the steps of:
[0057] 1) Preparation of the herbal beverage sample solution: Shake the liquid herbal beverage evenly, weigh 5mL, add it to a 25mL volumetric flask, add methanol solution to constant volume, and shake well to obtain the herbal beverage sample solution; (the concentration of the methanol solution is 550g / L )
[0058] 2) Preparation of a series of control sample solutions: Paracetamol is prepared into a standard stock solution with a concentration of 50 mg / L with methanol solution, and then 5 parts of standard stock solutions are taken and diluted to different multiples with methanol solution to obtain paracetamol Phenol concentration is successively the serial control sample solution of 5mg / L, 10mg / L, 20mg / L, 30mg / L and 50mg / L; (the concentration of methanol solution is 550g / L)
[0059] 3) making of standard curve: the serial control ...
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