Detection method for residual amount of MOPS (3-(N-Morpholino)Propane-Sulfonic acid)
A detection method and residue technology, applied in the field of MOPS detection, can solve the problem of inability to detect trace MOPS residues, etc., and achieve the effects of good detection precision, detection sensitivity and high accuracy
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reference example 1
[0034] It is the standard solution of 1.0mmol / L that adopts high performance liquid chromatography detection concentration to obtain the separation spectrum of standard solution, such as figure 1 shown. Depend on figure 1 It can be seen that the MOPS characteristic peak appears at the retention time of 2.47min in the MOPS standard solution with a concentration of 1.0mmol / L.
reference example 2
[0036] Adopt high performance liquid chromatography to detect blank control (0mmol / LMOPS) and 1.0mmol / LMOPS standard solution (blank control dilution) respectively, obtain contrast collection of graphs such as figure 2 shown.
[0037] Depend on figure 2 It can be seen that the MOPS characteristic peak was not detected after the blank control sample injection, while the 1.0mmol / L MOPS standard solution (blank control dilution) could detect the obvious MOPS characteristic peak at the retention time of 2.49min.
[0038] Note: The normal retention time of MOPS detected by liquid chromatography is between 2.40±0.10min.
Embodiment 1-3
[0040] Quantitative detection of 3 parts of 1.0mmol / L MOPS standard solution, detection conditions: chromatographic column: AcclaimTrinityP1, column temperature is 30°C, 35°C, 40°C, atomization temperature is 25°C, 30°C, 35°C , mobile phase: a mixture of acetonitrile and ammonium acetate solution, the volume ratio is 1.1:1, 1.5:1, 2:1 respectively, the flow rates are: 0.4ml / min, 0.5ml / min, 0.6ml / min, sample injection The volumes are: 3μL, 5μL, 10μL. The test results are shown in Table 1.
[0041] Table 11. The detection results of 0mmol / LMOPS standard substance under different detection conditions
[0042]
[0043] As can be seen from Table 1, MOPS can be detected under the detection conditions of Examples 1-3, and the retention time is about 2.44min, and the peak areas are similar, indicating that the chromatographic conditions of Examples 1-3 can all realize the detection of trace MOPS , and the symmetry of the chromatographic peak obtained under the conditions of Examp...
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