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nmol per litre converted to ppb for a gas
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Dear convert-me.com forum visitors,
Our forum has been available for many years. In September 2014 we decided to switch it to read-only mode. Month after month we saw less posts with questions and answers from real people and more spam posts. We were spending more and more resources cleaning the spam until there were less them 1 legitimate message per 100 spam posts. Then we decided it's time to stop.
All the posts in the forum will be available and searchable. We understand there are a lot of useful information and we aren't going to remove anything. As for the new questions, you can always ask them on convert-me.com FaceBook page
Thank you for being with us and sorry for any inconveniences this could caused.
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nmol per litre converted to ppb for a gas
by Guest » Sun Feb 05, 2006 10:50 pm
Hello there I am trying to convert ozone measurements and want ppb but I have nmol per litre.
- Guest
by Guest » Mon Feb 06, 2006 3:20 am
ppb is ambiguous because it can be by weight fraction, volume fraction, or mole fraction (the last two are the same for a gas).
As a molar fraction, ppb would be, for example nmol/mol. The ozone is already measured in nmol. Whatever the dilutant gas is, air or something else, the volume occupied by a mole can be calculated by ideal gas law if you know temperature and pressure. At STP, 1 mol occupies 22.4 L. Therefore your liters of gas, at known temperature and pressure, can be converted to moles.
As a molar fraction, ppb would be, for example nmol/mol. The ozone is already measured in nmol. Whatever the dilutant gas is, air or something else, the volume occupied by a mole can be calculated by ideal gas law if you know temperature and pressure. At STP, 1 mol occupies 22.4 L. Therefore your liters of gas, at known temperature and pressure, can be converted to moles.
- Guest
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