摘要
在醚性介质中，碱性染料品红与亚硝醚粮重氦化，然后在碱性介质中与８－羟基喹啉偶联生成偶氮化合物。该偶氮化合物于电位－０．７０Ｖ（ｖｓ．ＳＣＥ）处有一灵敏的极谱波，波高与亚硝酸根浓度在７×１０￣（－９）～５×１０￣（－６）ｇ／ｍＬ范围内呈线性关系，检测限为５×１０￣（－９）ｇ／ｍＬ。该方法用于人唾液中亚硝醚根的测定，结果满意。
olarography is used for the determination ofnitrite inhuman saliva.Nitrite is first derivated withp-rosaniline,followed by coupling to 8-hyd-toxyquinoline(oxine)in basic medium to produce anazo dye. The azo group may be reduced to a hydrazogroup,thus a sensitive polarographic wave is pro-duced at the potential of-0. 7V. The limit of detec-tion is 0.005μg/mL. This method has been appliedto determine nitrite in human saliva.
出处
《分析试验室》
CAS
CSCD
北大核心
1994年第3期55-56,64,共3页
Chinese Journal of Analysis Laboratory
