monitoring {HEAD ~ the characteristics} of the plurality of sensor areas with {TAIL ~ respect} to one parameter which varies on the basis of the accumulation of the nanoparticles , 
with
monitoring { HEAD ~ the characteristics } of the plurality of sensor areas with { TAIL ~ respect } to one parameter which varies on the basis of the accumulation of the nanoparticles ,
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH