Method for measuring content of potassium chloride and sodium chloride in potassium chloride and sodium chloride injection solution
A technique for potassium chloride, sodium chloride and injection, which is applied in the field of determining whether the potassium chloride and sodium chloride contents of potassium chloride and sodium chloride injection meet quality standards, and can solve the problem that the titration end point jump phenomenon is not obvious, Complex operation procedures, secondary pollution and other problems, to achieve the effect of reducing secondary pollution, easy to use, and less sampling
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Embodiment 1
[0032] The mensuration of embodiment 1 potassium chloride content
[0033] 1) Preparation of blank test solution:
[0034] Dissolve 0.9g of sodium chloride with water and dilute to 100mL, shake well, accurately measure 5.0mL of the resulting solution, put it in a 50mL measuring bottle, add water to dilute to the mark, shake well, and obtain a blank test solution;
[0035] 2) Preparation of reference substance solution:
[0036] Precisely measure 5.0 mL of potassium standard solution ([National Standard Solution GBSG 62020-90 (2601)] National Iron and Steel Materials Testing Center, General Iron and Steel Research Institute) with a concentration of 1000 μg / mL and a medium of 10% HCl, and place it in a 50 mL measuring bottle , dilute to the mark with water, and shake well to obtain a solution with a concentration of 100 μg / mL. Accurately measure 1.0 mL, 2.0 mL, 3.0 mL, 4.0 mL and 5.0 mL of the 100 μg / mL solution, and place them in 100 mL measuring bottles respectively. Then pr...
Embodiment 2
[0077] The mensuration of embodiment 2 sodium chloride content
[0078] 1) Preparation of blank test solution:
[0079] Dissolve 0.3g of potassium chloride with water and dilute to 100mL, shake well, accurately measure 5.0mL of the resulting solution, place it in a 100mL measuring bottle, add water to dilute to the mark, shake well, and obtain a blank test solution;
[0080] 2) Preparation of reference substance solution:
[0081] Precisely measure 5.0 mL of sodium standard solution ([National Standard Solution GBSG 62020-90 (2601)] National Iron and Steel Materials Testing Center, General Iron and Steel Research Institute) with a concentration of 1000 μg / mL and a medium of 10% HCl, and place it in a 100 mL measuring bottle , dilute to the mark with water, and shake well to obtain a solution with a concentration of 50 μg / mL. Accurately measure 1.0 mL, 2.0 mL, 3.0 mL, 4.0 mL and 5.0 mL of the 50 μg / mL solution, and place them in 100 mL measuring bottles respectively. Then pre...
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