Analysis device, analysis method, and program

An analysis method for analyzing an analysis target gas by using ultraviolet light, the method comprising:

• introducing the analysis target gas into a measurement cell;
• supplying a constant first current to an LED light source configured to output the ultraviolet light to output the ultraviolet light from the LED light source toward the measurement cell;
• and
• supplying the LED light source with a second current larger than the first current, when intensity of the ultraviolet light output from the LED light source supplied with the first current decreases to a predetermined threshold value or less.

A program that causes a computer to perform an analysis method for analyzing an analysis target gas by using ultraviolet light, the analysis method comprising:

• introducing the analysis target gas into a measurement cell;
• supplying a constant first current to an LED light source configured to output the ultraviolet light to output the ultraviolet light from the LED light source toward the measurement cell;
• and
• supplying the LED light source with a second current larger than the first current, when intensity of the ultraviolet light output from the LED light source supplied with the first current decreases to a predetermined threshold value or less.