A method for detecting the residual amount of Tween 80 in hemostatic powder
A detection method and residue technology, applied in the measurement of color/spectral characteristics, etc., can solve the problems of poor accuracy, high sample requirements, time-consuming and laborious, etc., and achieve the effect of non-volatile concentration, saving time, and increasing experimental sensitivity.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0022] (1) Preparation of ammonium thiocyanate cobaltate solution: Weigh 7.5g of cobalt nitrate and 50.0g of ammonium thiocyanate into a 250mL volumetric flask, add water to dissolve and dilute to the mark, shake well, and store at 2-8°C.
[0023] (2) Treatment method of the test product: Accurately weigh 100 mg of the test product in a centrifuge tube, add 5 mL of absolute ethanol, and vortex; centrifuge to take the supernatant, wash it again with 1-2 mL of absolute ethanol, centrifuge, and combine Supernatant: Heat and concentrate the supernatant to about 0.1 mL, add 3 mL of purified water to dissolve completely.
[0024] (3) Test solution: transfer all the solution in (2) to a 5mL volumetric flask, and dilute to the mark with purified water.
[0025] (4) Take 3mL of the test solution, mix it with 6mL of dichloromethane and 9mL of ammonium thiocyanate cobaltammonium solution, shake it with a rotary shaker at room temperature for 1 hour, and then let it stand for 30min.
[0...
Embodiment 2
[0029] (1) Preparation of ammonium thiocyanate cobaltate solution: Weigh 7.5g of cobalt nitrate and 50.0g of ammonium thiocyanate into a 250mL volumetric flask, add water to dissolve and dilute to the mark, shake well, and store at 2-8°C.
[0030] (2) Treatment method of the test product: Accurately weigh 100 mg of the test product in a centrifuge tube, add 5 mL of absolute ethanol, and vortex; centrifuge to take the supernatant, wash it again with 1-2 mL of absolute ethanol, centrifuge, and combine Supernatant: Heat and concentrate the supernatant to about 0.1 mL, add 3 mL of purified water to dissolve completely.
[0031] (3) Test solution: transfer all the solution in (2) to a 5mL volumetric flask, and dilute to the mark with purified water.
[0032] (4) Take 3mL of the test solution, mix it with 6mL of dichloromethane and 9mL of ammonium thiocyanate cobaltammonium solution, shake it with a rotary shaker at room temperature for 2 hours, and then let it stand for 30min.
[...
Embodiment 3
[0036] (1) Preparation of ammonium thiocyanate cobaltate solution: Weigh 7.5g of cobalt nitrate and 50.0g of ammonium thiocyanate into a 250mL volumetric flask, add water to dissolve and dilute to the mark, shake well, and store at 2-8°C.
[0037] (2) Treatment method of the test product: Accurately weigh 200 mg of the test product in a centrifuge tube, add 5 mL of absolute ethanol, and vortex; centrifuge to take the supernatant, wash it again with 1-2 mL of absolute ethanol, centrifuge, and combine Supernatant: Heat and concentrate the supernatant to about 0.1 mL, add 3 mL of purified water to dissolve completely.
[0038] (3) Test solution: transfer all the solution in (2) to a 5mL volumetric flask, and dilute to the mark with purified water.
[0039](4) Take 3mL of the test solution, mix it with 6mL of dichloromethane and 9mL of ammonium thiocyanate cobaltammonium solution, shake it with a rotary shaker at room temperature for 1 hour, and then let it stand for 30min.
[00...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More