Departamento de Química, Universidad Central Marta Abreu de Las Villas, Carretera a Camajuaní Km 5.5, Santa Clara, Cuba.
Environ Monit Assess. 2013 Jul;185(7):6023-33. doi: 10.1007/s10661-012-3003-4. Epub 2012 Dec 4.
Atmospheric nitrogen dioxide (NO2) and sulfur dioxide (SO2) levels were monitored simultaneously by means of Radiello passive samplers at six sites of Santa Clara city, Cuba, in the cold and the warm seasons in 2010. The dissolved ionic forms of NO2 and SO2 as nitrate and sulfite plus sulfate, respectively, were determined by means of ion chromatography. Analysis of NO2 as nitrite was also performed by UV-Vis spectrophotometry. For NO2, significant t tests show good agreement between the results of IC and UV-Vis methods. The NO2 and SO2 concentrations peaked in the cold season, while their minimum levels were experienced in the warm season. The pollutant levels do not exceed the maximum allowable limit of the Cuban Standard 39:1999, i.e., 40 μg/m(3) and 50 μg/m(3) for NO2 and SO2, respectively. The lowest pollutant concentrations obtained in the warm season can be attributed to an increase in their removal via precipitation (scavenging) while to the decreased traffic density and industrial emission during the summer holidays (e.g., July and August).
2010 年，古巴圣克拉拉市的六个地点在寒冷和温暖季节同时使用 Radiello 被动采样器监测大气二氧化氮 (NO2) 和二氧化硫 (SO2) 水平。通过离子色谱法分别测定了溶解的 NO2 和 SO2 的离子形式，即硝酸盐和亚硫酸盐加硫酸盐。通过紫外-可见分光光度法也分析了 NO2 的亚硝酸盐形式。对于 NO2，t 检验分析显示 IC 和 UV-Vis 方法的结果具有良好的一致性。NO2 和 SO2 的浓度在寒冷季节达到峰值，而在温暖季节达到最低水平。污染物水平未超过古巴标准 39:1999 的最大允许限值，即分别为 40μg/m3 和 50μg/m3。在温暖季节获得的最低污染物浓度可归因于通过降水（清除）增加了它们的去除率，而夏季假期（如 7 月和 8 月）交通密度和工业排放量减少。
