Determining free aluminium content in soil samples typically involves extraction followed by spectroscopic analysis. Here is a general outline of a procedure you might use, although you should be sure to tailor it to your specific needs and follow any safety protocols:

Materials Needed:

Procedure:

Please consult the literature for specific details. I recommend reading articles such as:

Remember, following all safety protocols when handling chemicals and operating instruments in the lab is important. Always wear the appropriate personal protective equipment, including gloves, a lab coat, and safety glasses, and ensure your workspace is well-ventilated.

Joshua Depiver many many thanks sir for your suggestions and help. this article and the method you shared will help a lot.

Regards..