What does sweat contain?

Just home from a running (plus walking) session and wondered.

BTW, according to the winning article from wikipedia (the prize is getting clicked and read by Cookie Monster), sweat contains water, minerals, lactate and urea. Minerals could include (this is the part that requires clicking and reading) sodium, potassium, calcium, magnesium, zinc, copper, iron, chromium, nickel, and lead. It was also mentioned that sweat could contain chlorides and odorants (2-methylphenol & 4-methylphenol). The chlorides probably bleaches your clothes and the odorants... well, we know very well what they cause... LOL~