Medical Toxicology and Drug Abuse Research Center (MTDRC), Birjand University of Medical Sciences (BUMS), Birjand, Iran.
Social Determinants of Health Research Center, Birjand University of Medical Sciences (BUMS), Birjand, Iran.
Environ Geochem Health. 2019 Oct;41(5):1875-1880. doi: 10.1007/s10653-018-0226-5. Epub 2019 Mar 11.
Nowadays, air pollution by humans is considered a serious problem. One of the main sources of air pollution is carbon monoxide which is called the silent killer. With the increasing rate of population growth in Iran and subsequent acceleration of vehicle and fossil fuel usage, the mortality rate of carbon monoxide has increased. The aim of this study is assessment of the concentration of carbon monoxide in indoor and outdoor air of Sarayan city, Khorasan Province of Iran. In this descriptive-analytic study, the air condition of a residential area and outdoor environment of Sarayan city has been monitored for determining the carbon monoxide concentration during a 3-month period from January to March 2017. Overall, 25 stations with uniform distribution were located in the city. Fifty samples were taken monthly and by considering 3-month period, a total of 150 samples were gathered. The samples were taken in kitchens between 11 a.m. and 3 p.m., and by considering the respiratory height of the human body, the carbon monoxide meters (TES model, Taiwan) were placed at a height of 75-150 cm. The descriptive statistics were presented after entering data into SPSS-16, and, by applying Mann-Whitney and Kruskal-Wallis tests in the case of α = 0.05, the data were analyzed. The average concentrations of carbon monoxide in indoor and outdoor environments were 0.84 ± 3.21 ppm and 0.27 ± 0.92 ppm, respectively. The maximum carbon monoxide concentration in February in an outdoor environment was 6 ppm (station no. 4) and the least one was 0 ppm. In March, for an indoor area, the maximum carbon monoxide concentration was 41 pm for station no. 11. The indoor-to-outdoor (I-to-O) ratio in March was higher than other months, and in January, was less than others. The study reveals that the indoor and outdoor carbon monoxide indices of Sarayan city are at acceptable levels.
如今，人类造成的空气污染被认为是一个严重的问题。空气污染的主要来源之一是一氧化碳，它被称为“无声杀手”。随着伊朗人口增长率的提高以及车辆和化石燃料使用量的增加，一氧化碳的死亡率也有所上升。本研究旨在评估伊朗霍拉桑省萨拉扬市室内和室外空气中一氧化碳的浓度。在这项描述性分析研究中，监测了萨拉扬市一个住宅区的空气状况和室外环境，以确定 2017 年 1 月至 3 月期间 3 个月内的一氧化碳浓度。总体而言，在该市均匀分布了 25 个监测站。每月采集 50 个样本，考虑到 3 个月的时间，共采集了 150 个样本。样本在上午 11 点至下午 3 点之间在厨房采集，考虑到人体呼吸高度，将碳 monoxide 测量仪（台湾 TES 型号）放置在 75-150cm 的高度。将数据输入 SPSS-16 后，采用描述性统计方法，应用 Mann-Whitney 和 Kruskal-Wallis 检验（α=0.05）对数据进行分析。室内和室外环境中一氧化碳的平均浓度分别为 0.84±3.21ppm 和 0.27±0.92ppm。室外环境中 2 月份一氧化碳的最高浓度为 6ppm（4 号监测站），最低浓度为 0ppm。3 月份，11 号监测站的室内区域的一氧化碳浓度最高，达到 41ppm。3 月份的室内/室外（I/O）比值高于其他月份，而 1 月份的比值则低于其他月份。研究表明，萨拉扬市的室内和室外一氧化碳指数处于可接受水平。
