Abstract
The aim of the paper was to conduct an indoor air quality (IAQ) assessment in an auto repair shop, measuring CO2 and CO concentrations. Carbon monoxide and carbon dioxide concentrations were measured for a week. Two Testo 435-4 gauges were located at head height of an adult person (ca. 170 cm above the floor) in a room. The CO2 concentration was measured with an IAQ probe, which measures dew point temperature, psychrometer temperature and absolute pressure in indoor air. The second gauge was connected to a CO probe. Measurements were taken every 5 min and were averaged across an hour. Uncertainties were estimated using square-root combinations of fixed errors and random errors at a 0.05 level of statistical significance. The measurements were conducted from 17 November to 23 November 2018. The following graphs were plotted for carbon dioxide and carbon monoxide: hourly averaged concentration and 8 h averaged concentration. The results were discussed and compared to Polish, foreign and international standards and recommendations. It was found that the auto shop was in danger of negligence according to Polish law as well as nonfulfillment of healthy recommendations. An exhaust extraction system should be installed.
Highlights
Hundreds of people in Europe are killed per year by carbon monoxide
Carbon monoxide binds with haemoglobin to form carboxyhaemoglobin (COHb), which reduces the amount of oxygen supplied by the blood
The general aim of the paper is to facilitate a change in attitude towards this issue, so that the concentrations carbon oxides, especially carbon monoxide, would be the desired values determined by the controllers of a ventilation system in any place where exhaust fumes are emitted
Summary
Hundreds of people in Europe are killed per year by carbon monoxide. CO is generated by malfunctioning boilers or it infiltrates from garages. In generally, it is a product of incomplete combustion [1]. A problem exists in the garages wherein the concentration CO is not taken into consideration. The CO mole fraction exceedance was measured in a multi-car garage by Gładyszewska-Fiedoruk and Nieciecki [2], which inspired the authors of this paper to investigate this problem in other motorisation areas. Carbon monoxide binds with haemoglobin to form carboxyhaemoglobin (COHb), which reduces the amount of oxygen supplied by the blood. Carbon monoxide significantly decreases oxygen consumption by the brain, the heart, exercising skeletal muscle and developing foetuses
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