Elemental composition of the body

[Lisa!]

So when it says that 10% of the body mass consists of Hydrogen, does it mean only 1H(single proton) or it also includes other natural isotopes of hydrogen (deuterium and tritium ) ? I know that 1H is the most common hydrogen isotope with an abundance of more than 99.98%, but I just wanted to know exaactly what it means.

http://en.wikipedia.org/wiki/Composition_of_the_human_body

Thanks

 

[chemisttree]

That includes all of the isotopes of hydrogen. It will reflect the isotopic distribution of everything you ingest. I'm not too sure about tritium though. I would hope that particular isotope is present in extremely low concentrations.

 

[Lisa!]

That includes all of the isotopes of hydrogen. It will reflect the isotopic distribution of everything you ingest. I'm not too sure about tritium though. I would hope that particular isotope is present in extremely low concentrations.

Thank you!

 

[Borek]

To muddy water - isotopic distribution is not always identical.

See for example http://www.nationalpost.com/news/Periodic+table+weighty+revamp/3978117/story.html .

Not that it is something new, fact that atomic masses of elements are different depending on the source is known for many years.

 

[Lisa!]

To muddy water - isotopic distribution is not always identical.

See for example http://www.nationalpost.com/news/Periodic+table+weighty+revamp/3978117/story.html .

Not that it is something new, fact that atomic masses of elements are different depending on the source is known for many years.

hmmm...That's interesting!Thank you
Thanks God that I'm not at school anymore

 

[chemisttree]

hmmm...That's interesting!Thank you
Thanks God that I'm not at school anymore

And http://pubs.acs.org/stoken/presspac/presspac/full/10.1021/jf1003539" too!