| 一种同时测定酸雨中NO_3~- -N,NO_2~- -N的方法 |
| |
| 引用本文： | 李婉义,纪元,曹锦芳.一种同时测定酸雨中NO_3~- -N,NO_2~- -N的方法[J].华中科技大学学报(自然科学版),1992(2). |
| |
| 作者姓名： | 李婉义 纪元 曹锦芳 |
| |
| 作者单位： | 华中理工大学化学系
(李婉义，纪元)，华中理工大学化学系(曹锦芳) |
| |
| 摘 要： | 随着酸雨范围的扩大和酸雨危害的加深,世界各国、尤其西欧和日本对酸雨的研究十分重视.我国广州、重庆等地也做了大量的工作.近年来的研究表明,癌发病率的上
|
An Investigation on Simultaneous Ultra-Violet Spectrophotometric Determination of Nitrite and Nitrate in Rainwater |
| |
| Li Wanyi Ji Yuan Cao Jinfang.An Investigation on Simultaneous Ultra-Violet Spectrophotometric Determination of Nitrite and Nitrate in Rainwater[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,1992(2). |
| |
| Authors: | Li Wanyi Ji Yuan Cao Jinfang |
| |
| Institution: | Li Wanyi Ji Yuan Cao Jinfang |
| |
| Abstract: | Simultaneous determination of NO-8-N and NO-2-N in rainwater with linear regression of ultra-violet spectrophotometric and multiwavelength data is proposed. This method is based on the difference in molar absorptivity between two compounds at different wavelengths. The absorp-tances for 8 wavelengths within wavelength range of 200~215 nm are measured and the data are then processed with the method suggested. The linear correlation coefficients (r) of nitrite and nitrate are both found to-be greater than 0.999 and the recovery ratio is 96.5~109%. The relative standard deviation is 0.005 ppm with the coefficient of variation of 1.57%. Experimental results are found to be in good agreement with the data obtained by the ionchromatographic method. |
| |
| Keywords: | acid rain nitrite oxide linear regression ultra-violet spec- trophotometric method |
| 本文献已被 CNKI 等数据库收录！ |
