[墨西哥城一所幼儿园室内外空气质量评估]

[Evaluation of the indoor and outdoor air quality in a nursery school in Mexico City].

作者信息

Cortez-Lugo M, Mercado-García A, Hernández-Avila M, Meneses-González F, Palazuelos-Rendón E

机构信息

Centro de Investigación en Salud Poblacional (CISP), Instituto Nacional de Salud Pública (INSP), México.

出版信息

Salud Publica Mex. 1998 Sep-Oct;40(5):415-20.

PMID:9842279

Abstract

OBJECTIVE

To evaluate the differences between indoor and outdoor ozone (O3) and nitrogen dioxide (NO2) levels at a school located in southwest Mexico City.

MATERIAL AND METHODS

Indoor and outdoor O3 and NO2 levels were measured daily between January and April 1990 by manual monitoring.

RESULTS

Indoor and outdoor concentrations of nitrogen dioxide did not surpass the Mexican standard (0.21 ppm). The correlation coefficient between maximum NO2 concentrations measured by the city's local monitoring station and those measured outside the classroom was 0.82 (p < 0.001). Regarding ozone, its maximum outdoor concentration was 0.29 ppm and indoor concentrations were on average below 0.06 ppm (maximum = 0.17 ppm). The indoor/outdoor correlation coefficient was 0.72, and for every 1.7 ppm outside, there was 1.0 ppm inside (p < 0.05).

CONCLUSIONS

Since the highest outdoors O3 concentrations were observed between 11:00 and 14:00 hrs, it is recommendable to have recess before this time.

摘要

目的

评估墨西哥城西南部一所学校室内外臭氧（O₃）和二氧化氮（NO₂）水平的差异。

材料与方法

1990年1月至4月期间，通过人工监测每日测量室内外的O₃和NO₂水平。

结果

室内外二氧化氮浓度均未超过墨西哥标准（0.21 ppm）。该市当地监测站测得的二氧化氮最大浓度与教室外测得的最大浓度之间的相关系数为0.82（p < 0.001）。关于臭氧，其室外最大浓度为0.29 ppm，室内浓度平均低于0.06 ppm（最大值 = 0.17 ppm）。室内/室外相关系数为0.72，室外每1.7 ppm，室内有1.0 ppm（p < 0.05）。