A pretreatment method for laser analysis of inorganic elements in plant samples
A technology of inorganic elements and samples
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Embodiment 1
[0028] A pretreatment method for laser analysis of inorganic elements in plant samples, the steps of which are as follows:
[0029] Step 1, the plant sample is washed twice with deionized water, dried, crushed and milled, and dried to constant weight to obtain plant sample particles;
[0030] Step 2, put the plant sample particles into the reaction kettle, add nitric acid dropwise until the plant sample particles are submerged, and then ultrasonically react for 10 minutes;
[0031] Step 3, slowly drop hydrogen peroxide into the reaction kettle, and at the same time gradiently raise the temperature for ultrasonic reaction for 5 hours, and filter to obtain the digestion solution;
[0032] Step 4, distill the digestion solution under reduced pressure to form a viscous shape, then add dilute nitric acid to clean it, then add deionized water to make up to volume, and obtain the solution of the plant sample to be tested.
[0033] The deionized water cleaning in the step 1 adopts ul...
Embodiment 2
[0043] A pretreatment method for laser analysis of inorganic elements in plant samples, the steps of which are as follows:
[0044] Step 1, the plant sample is washed 5 times with deionized water, dried, crushed and milled, and dried to constant weight to obtain plant sample particles;
[0045] Step 2, put the plant sample particles into the reaction kettle, add nitric acid dropwise until the plant sample particles are submerged, and then ultrasonically react for 20 minutes;
[0046] Step 3, slowly drop hydrogen peroxide into the reaction kettle, and at the same time gradiently raise the temperature for ultrasonic reaction for 5 hours, and filter to obtain the digestion solution;
[0047] Step 4, distill the digestion solution under reduced pressure to form a viscous shape, then add dilute nitric acid to clean it, then add deionized water to make up to volume, and obtain the solution of the plant sample to be tested.
[0048] The deionized water cleaning in the step 1 adopts ...
Embodiment 3
[0058] A pretreatment method for laser analysis of inorganic elements in plant samples, the steps of which are as follows:
[0059] Step 1, the plant sample is washed 3 times with deionized water, dried, crushed and milled, and dried to constant weight to obtain plant sample particles;
[0060] Step 2, put the plant sample particles into the reaction kettle, add nitric acid dropwise until the plant sample particles are submerged, and then ultrasonically react for 15 minutes;
[0061]Step 3, slowly drop hydrogen peroxide into the reaction kettle, and at the same time gradiently raise the temperature for ultrasonic reaction for 5 hours, and filter to obtain the digestion solution;
[0062] Step 4, distill the digestion solution under reduced pressure to form a viscous shape, then add dilute nitric acid to clean it, then add deionized water to make up to volume, and obtain the solution of the plant sample to be tested.
[0063] The deionized water cleaning in the step 1 adopts u...
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