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US 12,605,677 B2Granted
Method for analyzing composite semipermeable membrane
AssigneeToray Industries, Inc.
InventorsKoji Nakatsuji, Kazuya Sugita, Hiroo Takabatake
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Abstract
The present invention provides a method for analyzing a halogenated structure in a composite semipermeable membrane. The method for analyzing a composite semipermeable membrane according to the present invention includes: a step A for immersing the composite semipermeable membrane in a solution containing alkali and at least one of nicotinamide and a derivative thereof; and a step B for performing fluorescence analysis on the solution obtained in step A.
Claims7
A method for analyzing a composite semipermeable membrane, the method comprising:
- a step A of immersing a composite semipermeable membrane in a solution comprising an alkali and at least one of a nicotinamide and a derivative thereof;
- a step B of subjecting the solution to fluorescence analysis after the step A;
- and
- between the step A and the step B, a step C of heating the solution,
- wherein a heating temperature is in a range of 50° C. to 90° C. and a heating time is in a range of 30 to 60 minutes in the step C.
2 more elements
Dependencies are inferred from the claim text.