Correlation between Sand Dust Weather and Peak Expiratory Flow Rate of Children in Inner Mongolia of China
- VernacularTitle:包头市小学生最大呼气流速与扬沙天气关系的分析
- Author:
Ying LIU
;
Daeseon KIM
;
Changjie HE
- Publication Type:Journal Article
- Keywords:
Air pollution;
Sand-dust weather;
Particulate matter;
Peak expiratory flow rate
- From:
Journal of Environment and Health
1993;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To assess the correlation between the level of ambient particulate matter in sand-dust climate and peak expiratory flow rate (PEFR value) of the exposed children in Inner Mongolia of China. Methods PEFR values of the subject children were measured with a mini-wright peak flow meter three times per day continuously for 40 days, with a standard procedure and recorded by themselves. Meanwhile, the weather data and the ambient concentrations of SO2, NO2, CO, PM10 and PM2.5 were also monitored. The SPSS 13.0 was used for statistical analysis of the data. Results The concentration of PM10 increased to 3.183 mg/m3 and PM2.5 to 1.067 mg/m3 when the sand-dust weather broke out and the increase in PM10 was more than that in PM2.5.The schoolboy’s PEFR value decreased to 268.67 L/min and the schoolgirl to 256.79 L/min when the sand-dust weather broke out. A negative relationship was observed between the concentration of PM2.5 and the schoolgirl’s PEFR value.(P
