Is there citric acid in human sweat?

Answer 1

Not under normal circumstances. Sweat contains mainly water. It also contains minerals, as well as lactate and urea. Mineral composition will vary with the individual, the acclimatisation to heat, exercise and sweating, the particular stress source (exercise, sauna, etc.), the duration of sweating, and the composition of minerals in the body. An indication of the minerals content is:

* sodium 0.9 gram/liter * potassium 0.2 gram/liter * calcium 0.015 gram/liter * magnesium 0.0013 gram/liter Also many other trace elements are excreted in sweat, again an indication of their concentration is (although measurements can vary fifteenfold):

* zinc (0.4 mg/l) * copper (0.3 - 0.8 mg/l) * iron (1 mg/l) * chromium (0.1 mg/l) * nickel (0.05 mg/l) * lead (0.05 mg/l)

Answer 2

Yes, there is a small amount of citric acid present in human sweat. Citric acid is a natural component of sweat produced by sweat glands in the skin. It can contribute to the overall makeup of sweat along with other components like water, electrolytes, and urea.