DEVELOPMENT OF A STANDARD CALIBRATION MODEL FOR THE NEAR-INFRARED ANALYSIS OF GASOLINE

THE NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY (NIST) HAS UNDERTAKEN AN EFFORT TO PROVIDE SOLID STANDARDS AND ALGORITHMS FOR THE STANDARDIZATION OF NEAR-INFRARED SPECTROPHOTOMETERS. THIS EFFORT, COUPLED WITH RECENT ADVANCES IN MATHEMATICAL ALGORITHMS FOR REGRESSION MODEL TRANSFER, HAS CREATED AN OPPORTUNITY FOR THE DEVELOPMENT OF STANDARD CALIBRATION MODELS. THE PROPOSED RESEARCH FOCUSES ON THE DEVELOPMENT OF A STANDARD CALIBRATION MODEL FOR THE ANALYSIS OF GASOLINE BY NEAR-INFRARED SPECTROSCOPY. THE CALIBRATION MODEL WILL BE STANDARDIZED AGAINST THE HIGH ACCURACY SPECTROPHOTOMETER AT NIST. PHASE 1 OF THE PROJECT ENTAILS DEVELOPING A STANDARD CALIBRATION MODEL FOR THE MEASUREMENT OF RESEARCH OCTANE NUMBER (RON), MOTOR OCTANE NUMBER (MON) AND PUMP OCTANE NUMBER. THIS MODEL WILL BE USED TO PREDICT OCTANE NUMBERS ON GASOLINE SAMPLES COLLECTED FROM 23 REGIONS THROUGHOUT THE UNITED STATES. ONCE CONPLETE, THE MODEL WILL BE TRANSFERRED TO VARIOUS SCANNING GRATING AND DIODE-ARRAY NEAR-INFRARED SPECTROPHOTOMMETERS TO ASSESS ITS UNIVERSALITY. THE MODEL ADDRESSES SPECIFIC STANDARDS AND CALIBRATION NEEDS OF THE GASOLINE INDUSTRY.