Ross W D, Buttler G W, Duffy T G, Rehg W R, Wininger M T, Sievers R E
J Chromatogr. 1975 Oct 29;112:719-27. doi: 10.1016/s0021-9673(00)99999-0.
A highly sensitive gas chromatographic method is presented for the determination of aqueous nitrates. By suitable chemical pretreatment, this method is also applicable to the analysis of aqueous nitrites and gaseous oxides of nitrogen. The method has been applied to the analysis of drinking water, urine, and nitric acid. The technique involves the conversion of the nitrate ion to nitrobenzene with subsequent analysis by electron capture gas chromatography. The detection limit for nitrobenzene is ca. 10(-12) g, making possible the analysis of environmentally significant concentrations of aqueous nitrates and nitrites and gaseous oxides of nitrogen.
本文介绍了一种用于测定水中硝酸盐的高灵敏度气相色谱法。通过适当的化学预处理，该方法也适用于分析水中亚硝酸盐和氮的气态氧化物。该方法已应用于饮用水、尿液和硝酸的分析。该技术包括将硝酸根离子转化为硝基苯，随后通过电子捕获气相色谱进行分析。硝基苯的检测限约为10(-12) g，使得分析环境中具有重要意义浓度的水中硝酸盐、亚硝酸盐和氮的气态氧化物成为可能。
