The sorbates will be desorbed when the sampler is exposed to {HEAD ~ the fluid} to provide {TAIL ~ a check} on the apparent duration of the exposure and a correction to the calculation of analyte concentration in the fluid that results from desorption and reverse diffusion 
to provide
The sorbates will be desorbed when the sampler is exposed to { HEAD ~ the fluid } to provide { TAIL ~ a check } on the apparent duration of the exposure and a correction to the calculation of analyte concentration in the fluid that results from desorption and reverse diffusion
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH