Auto Exhaus
The purpose of the experiment was to understand and learn how to use Fourier transform infrared spectroscopy for analyzing the content of exhaust gas, carbon monoxide. Carbon monoxide, CO, is formed from burning oil, gas, coal, and wood, and is the most common air pollutant in urban areas (Peter et. al., 1999). Because its primary source is automobile emissions, carbon monoxide exposure is particularly high near heavily trafficked highways (Peter et. al., 1999). Carbon monoxide attaches to hemoglobin in the red blood cells which reduces the amount of oxygen transported to the cells. Scientific evidence indicates that exposure to carbon monoxide can reduce mental activities such as: time distortion (≈10-30 ppm), throb
after startup)All samples were taken on the same day and a temperature was approximately 10 ˚F. Each sample spectrum was obtained by averaging 50 scans. A 10 cm length of IR cell, which was fitted with NaCl windows, and manifold system allowed the collection of CO gases directly into the IR gas cell. The least concentration that can be detected with FTIR is about 0. The time at which the samples were collected are shown in the table 1. The samples were collected at free idle after the car was holding at a fast idle (2500 RPM) for approximately 30 seconds. after startup)1997 Toyota Tacoma TimeSample 2 (idle conditions) 1:04 P. After that, the background spectrum of the evacuated IR cell was measured, and then the exhaust samples were transferred to the IR cell to analyze by FTIR method. For the calibration curve, 5% (v/v) CO in N2 and 1% (v/v) CO in N2 were used as standard CO samples. To collect the exhaust samples from the cars, the evacuated metal flasks were used. bing headache (≈100 ppm), vomiting and collapse (≈300 ppm), and coma and death (≈600 ppm) (Rowlen et al. 1993 Toyota Corolla TimeSample 1 (idle conditions) 1:10 P. after startup)Sample3 (idle conditions) 1:01 P.
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