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《Chemical Analysis and Meterage》 2016-04
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Quality Control Method of Precipitation Monitoring in Atmospheric Environment

Sun Juan;Yu Yiyong;Bai Song;Zhu Zhifeng;Nanjing Municipal Environmental Monitoring Center Station;  
The quality control methods of precipitation monitoring sampling,sample preservation and laboratory analysis were discussed according to the environment monitoring technical specification and standard methods such as Environmental Monitoring Quality Management Regulations and Jiangsu Province Environmental Monitoring Quality Management Implementation Details. The qualified rate of detection of rainfall,conductivity and pH monitoring was higher than 90% in 15 precipitation samples by different sampling methods and equipments. The experimental results showed that the retention time were 3 d for nitrate and ammonium,14 d for fluoride,chloride and sulfate ions,30 d for the potassium,sodium,calcium and magnesium in precipitation sample. The comparison experiment was carried out in two laboratories. The blanks were below the method detection limits,standard curve correlation coefficients were not less than 0.999 0. The relative standard deviations of detection results were 1.4%-5.9%(n=6), the recoveries of the target were 89.8%-106%. The results of certified standard sample were qualified. This method can ensure the precipitation monitoring results accurate and reliable, so it can meet the requirements of Acid Deposition Monitoring Technology Standard.
【Fund】: 南京市环保科研项目(201004)
【CateGory Index】: X831
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