摘要
本文报道两种测定二苯胺磺酸钠的极谱方法，它们是基于在Ｈ＿２ＳＯ＿４和ＮａＮＯ＿２介质中二苯胺磺酸钠被定量亚硝化，然后用极谱法测量其亚硝化产物。这两种方法分别是以标准ＮａＮＯ＿２作基准的极谱滴定法和以纯二苯胺磺醚钠为基准的单扫描示波极谱法。应用这两种方法于化学试剂二苯胺磺酸钠含量的测定，结果令人满意。
Two methods for the determination of sodiumdiphenylamine-4-sulphonate(R)were reported basedon stoichiometric nitrosation of R in NaNO_2 andH_2SO_4 medium and subsequent polarograpic measure-ment of N-nitroso-R,One method is polarographictitration using standardized NaNO_2 as the standard so-lution and the other is linear-sweep voltammetricmethod using purified R as standard.These methodswere applied to the determination of the content of Rin chemical reagents with satisfactory results.
出处
《分析试验室》
CAS
CSCD
北大核心
1994年第3期67-69,94,共4页
Chinese Journal of Analysis Laboratory
关键词
二苯胺磺酸钠
亚硝化
滴定法
Sodium diphenylamine-4-sulphonate
nitrosation
polarographic titration
linear-sweepvoltammetry
