摘要
为简化生活饮用水源中硝酸根和亚硝酸根的检测。去除水中的CO3 2 及浊度的干扰 ,以“减法技术”求导 ,用导数 比导数波谱法测定环境水样中硝酸根和亚硝酸根含量。结果表明本法很好地消除了导数光谱值较小的物质及仪器噪声带来的干扰。回收率为 96.7%～ 10 2 .5 %。
A derivative ratio derivative spectrum method was devised for resolving the interference of two components in a two component mixture measured in derivative spectrum method. The ratio derivative spectrum was obtained from the derivative absorption spectrum of the mixture divided by a derivative absorption spectrum of one of the components. The derivative of ratio derivative spectrum against wavelength resulted in the derivative ratio derivative spectrum that was determined by the concentration of one component of the mixture. The results suggest that this method is better than ratio derivative spectrum method and it can be applied for determining nitrate and nitrite (NO - 3 and NO - 2) in environment water samples. Being simple and stable, it can eliminate the influence of the interfering materials, giving a recovery rate of more than 96.7%. [
出处
《湖南医科大学学报》
CSCD
2000年第1期87-89,共3页
Bulletin of Hunan Medical University
基金
湖南医科大学留学回国人员科研启动基金
关键词
导数比导数波谱
环境水样
硝酸根
亚硝酸根
derivative ratio derivative spectrum
nitrates
nitrites
water
chemistry analysis
