CAJ | 학술논문

基于在盐酸介质中,亚硝酸根与氨基苯磺酸发生重氮化反应,氨基苯磺酸共振光散射强度随亚硝酸根的加入量增加而明显降低的现象,建立了新的共振光散射法测定亚硝酸根的方法。该方法对亚硝酸根检测的线性范围为0.01～0.70？g/mL,检出限为7.2ng/mL（3σ）。该方法应用于自来水中亚硝酸根离子的测定,回收率为93.1%～105.7%。
기우재염산개질중,아초산근여안기분광산발생중담화반응,안기분광산공진광산사강도수아초산근적가입량증가이명현강저적현상,건립료신적공진광산사법측정아초산근적방법。해방법대아초산근검측적선성범위위0.01～0.70？g/mL,검출한위7.2ng/mL（3σ）。해방법응용우자래수중아초산근리자적측정,회수솔위93.1%～105.7%。
In a dilute HCl medium,when diazo-reaction between nitrite ion and sulfanilic acid was occurred,the resonance light scattering（RLS） intensity of sulfanilic acid was quenched by NO2-,the magnitude of decrease RLS intensity（IRLS） with directly proportional to the concentration of NO2-.The linear calibration range for nitrite was 0.01～0.70μg/mL with a detection limit of 7.2ng/mL（3σ）.The proposed method was used in the determination of nitrite ion in tap-water samples,giving recovery range of 93.1%～105.7% with satisfactory results.