I am looking to detect the concentration of certain gasses and log them. For instance, "at 4:32:24 there was a concentration of 1,000 ppm of Oxygen and 2,000 ppm of Carbon Dioxide at this location" I was looking into the MQ sensors like the MQ-5 here - https://www.amazon.com/ACROBOTIC-Natural-Breakout-Arduino-Raspberry/dp/B07CRDC9F4/ref=sr_1_2?dchild=1&keywords=mq5&qid=1626109541&sr=8-2 which is sensitive to "Natural Gas, Town/Coal Gas, LPG, CH4, CO or Alcohol"
However I am wondering if theses sensors can differentiate between the different gasses it is sensitive to. Does the digital output tell the certain gas detected? Or is the output just "sensor detected 1,000 ppm" without the specific gas?
If it cannot differentiate between gasses, what would be the best option to create a project like this? Thanks for all the help!