don't think this is correct. ppb is mass to mass when dealing with liquids
and should be reported as ppbw (parts per billion by weight). 1 liter of
sample (assume water) = 1,000 g and 1ug/1,000g = 1 ppb by weight. If ppb
were volume to volume then you would need to factor in the specific gravity of
the compound of interest. For gases however, ppb is reported as volume to
volume or ppbv assuming that the ideal gas law applies.
is mass to volume the other is volume to volume
1ug/liter = 1ppb is approximately accurate assuming the material has
the same density as water and you are at standard
Can someone tell me how these lab testing
results translate into parts per billion (ppb)?
Thanks for your help.
Range Detected Average
2001 ND-1.45 ug/L 0.47
2001 ND-1.56 ug/L 0.64
2001 ND-2.38 ug/L 0.94
NOTICE - This communication may contain confidential and privileged
information that is for the sole use of the intended recipient. Any viewing,
copying or distribution of, or reliance on this message by unintended
recipients is strictly prohibited. If you have received this message in
error, please notify us immediately by replying to the message and deleting
it from your computer.