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