Bioreactors, Calibration, Discriminant Analysis, Environmental Monitoring - methods, Environmental Pollution - analysis, Least-Squares Analysis, Plastics - analysis, Polyethylene - analysis, Polyethylene Terephthalates - analysis, Polypropylenes - analysis, Polystyrenes - analysis, Soil - chemistry, Spectroscopy, Near-Infrared - methods, Support Vector Machi...