摘要
研究了在强酸介质中亚硝酸根催化溴酸钾氧化酸性品红的褪色反应及其动力学条件，建立了高灵敏测定痕量亚硝酸根的新催化光度法。方法灵敏度为３．７×１０￣（－１１）ｇ／ｃｍ￣２亚硝酸态氨（△Ａ＝０．００１，ｂ＝１ｃｍ），线性范围为０．０６～０．４２μｇ／１０ｍＬ，用于测定唾液及硝酸钾中亚硝酸根。
The discoloration reaction and kineticcondition for the catalytic oxidation of acidfuchsin in strong acid medium with potassi-um bromate has been studied.The reactionis catalysed by NO.A highly sensitive,new catalytic spectrophotometric method fordetermining trace nitrite has been estab-lished. The linear range of determination is0. 06～0. 42μg/10mL. The sensitivity of themethod is 3.7 × 10￣(-11)g/cm￣2 for nitrogen inNO.The method has been used to deter-mine trace nitrite in saliva and potassium ni-trate samples.
出处
《分析试验室》
CAS
CSCD
北大核心
1995年第4期23-25,共3页
Chinese Journal of Analysis Laboratory
基金
福建省自然科学基金
关键词
光度法
亚硝酸根
唾液
硝酸钾
Catalytic reaction
Kineticspectrophotometry
nitrite determinatin.
