What chemical is present in human sweat

Man: chemical composition

Distribution of elements in the human body

elementWt%aAtom-%b
Oxygen (O) 56.1 25.5
Carbon (C) 28.0 9.5
Hydrogen (H) 9.3 63
Nitrogen (N) 2.0 1.4
Calcium 1.5 0.31
Chlorine (Cl) 1
Phosphorus (P) 1
Potassium (K) 0.25 0.06
Sulfur (S) 0.2 0.05
Sodium (Na) 0.03
Magnesium (Mg) 0.01

a) [SchlagNach1963-251], b) [Römpp9]

In total, only about 21 elements are important in mammalian organisms, including the following 10 as Trace elements:
Iron (Fe): in the red blood pigment and in cytochromes, iodine (I): proteins or hormones in the thyroid, fluorine (F): in tooth enamel, zinc (Zn): in enzymes (hydrolases, oxidoreductases), copper (Cu) : in enzymes (oxidoreductases), manganese (Mn): in enzymes (hydrolases), selenium (Se): in enzymes, chromium (Cr): in enzymes, molybdenum (Mo): in enzymes (oxidoreductases), cobalt (Co): in enzymes (vitamin B12).

Note: The elements silicon (Si) and aluminum (Al), which are frequently found in the earth's crust, only occur in traces in the human body.

Classes of substances in the human body

Substance classWt%
water about 60
Proteins 16
Lipids 10
carbohydrates 1.2
Nucleic acids 1
Minerals 5

[SchlagNach1963-251]

Water balance in the human body

Water releasein 24 hoursWater absorptionin 24 hours
urine 1500 ml beverages 1300 ml
lung 550 ml Food 1000 ml
Skin (sweat) 450 ml in metabolism
Feces 150 ml released water 350 ml
total 2650 ml total 2650 ml

[SchlagNach1963]

Urine excretion

organicin 24 hoursinorganicin 24 hours
urea 30 - 40 g Sodium chloride 10-15 g
uric acid 0.5 - 1 g "Phosphorus pentoxide" 3 - 4 g
Creatinine 0.5 - 2.5 g "Sulfur trioxide" 1.5 - 3 g
Hippuric acid 0.1 - 2.0 g "Sodium oxide" 4 - 7 g
ammonia 0.5 - 1.0 g "Potassium oxide" 2 - 4 g

[SchlagNach1963]
Note: "Phosphorus pentoxide" etc. only refers to the formal-analytical information, chemically it is phosphate etc.

breathing

Breathing air (dry):
gasa,% by volumeoff,% by volume
O2 20.95 16.0
CO2 0.03 4.2
N2 78.8 79.0
Noble gases 0.94 0.9

[SchlagNach1963]

Breathing air throughput in the lungs: approx. 8 l / min (approx. 16 breaths per minute with approx. 500 ml breath volume).
Oxygen consumption (O2) per day: 800 - 1000 g = 560 - 700 l (STPD: Standard Temperature and Pressure, Dry (0 ° C, 1 atm = 1013 hPa, dry)) = 25 - 31.2 mol.
Water vapor partial pressure in water vapor-saturated air at 37 ° C: 47 mm Hg = 47 Torr = 62.7 hPa.

Chemistry internship for medical professionals: supplementary materials
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