Thus, {HEAD ~ the visible laser radiation} is used to facilitate {TAIL ~ the detection} of ambient NO and NO from NO2 by REMPI and to discriminate these species from more complex nitrocompound analytes 
is used to facilitate
Thus , { HEAD ~ the visible laser radiation } is used to facilitate { TAIL ~ the detection } of ambient NO and NO from NO2 by REMPI and to discriminate these species from more complex nitrocompound analytes
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL 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