Method for determining content of mineral elements in formulated food which is used for special medical application
A technology for mineral elements and formula food, which is applied in the field of medical food component detection, can solve the problems of cumbersome determination methods, affect the determination results, sample loss, etc., and achieve the effects of shortening the digestion time, ensuring the digestion effect, and reducing the amount of samples.
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Embodiment 1
[0035] Adopt a kind of method of the present invention to measure the content of 8 kinds of mineral elements of sodium, potassium, calcium, magnesium, zinc, iron, copper and manganese in formula food for special medical purpose simultaneously by utilizing inductively coupled plasma atomic emission spectrometer to measure energy TPF- 1.0 The content of 8 mineral elements including sodium, potassium, calcium, magnesium, zinc, iron, copper and manganese.
[0036] (1) Empty elimination:
[0037] Take 8 digestion tanks, wash them with purified water, add 8mL of 65% nitric acid, cover them, wipe off the surface moisture, and put them symmetrically (in accordance with the position specified in the instruction manual of the microwave digestion instrument) into the microwave digestion instrument. Digest according to the digestion procedure of 2, take it out after the temperature is lower than 80°C, pour out the residual nitric acid in the fume hood, wash it with purified water, and dry...
Embodiment 2
[0058] Using a method of the present invention to simultaneously measure the contents of eight mineral elements in formula foods for special medical purposes, sodium, potassium, calcium, magnesium, zinc, iron, copper and manganese, by using an inductively coupled plasma atomic emission spectrometer The content of 8 mineral elements including sodium, potassium, calcium, magnesium, zinc, iron, copper and manganese.
[0059] (1) Empty digestion: Take 8 digestion tanks, wash them with purified water, add 5mL of 68% nitric acid, cover them, wipe off the surface moisture, and put them symmetrically (according to the position specified in the instruction manual of the microwave digestion instrument) In the microwave digestion apparatus, digest according to the digestion program in Table 4, take it out when the temperature is 60°C, pour out the residual nitric acid in the fume hood, wash it with purified water, and dry it for later use.
[0060] Table 4 Digestion program
[0061] ...
Embodiment 3
[0073] Determination of Jiawei body TPF by using a method of the present invention to simultaneously determine the contents of eight mineral elements, sodium, potassium, calcium, magnesium, zinc, iron, copper and manganese in formula foods for special medical purposes by using an inductively coupled plasma atomic emission spectrometer -Contents of 8 mineral elements in FOS including sodium, potassium, calcium, magnesium, zinc, iron, copper and manganese.
[0074] (1) Empty digestion: Take 8 polytetrafluoroethylene digestion tanks, wash them with purified water, add 12mL of 50% nitric acid, cover them, dry the surface moisture, and put them in symmetrically (microwave digestion apparatus according to the regulations in the manual) Placement) In the microwave digestion apparatus, digest according to the digestion program in Table 6, take it out after the temperature is lower than 80°C, pour out the residual nitric acid in the fume hood, wash it with purified water, and dry it for...
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