Method for determining element impurities in OTC soft capsule by using inductively coupled plasma mass spectrometry technology
A technology that couples plasma and uses inductance. It is applied in the field of elemental impurities and can solve the problem of no safe and reliable detection method for elemental impurities.
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[0032] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be described in further detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0033] Specific analysis and detection methods include:
[0034] (1) Prepare the standard solutions of the impurities of each element; use 1% dilute nitric acid and mixed element standard solutions to prepare 5 standard solutions with different concentrations (solutions 1-5). The concentration of the standard solution in Table-1 is calculated according to the limit of the target element, and it is required to cover the concentration of 50% to 150% of the target element. The element limit refers to: calculate the limit value according to the maximum daily dosage and element PDE of different products...
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