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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。
In this paper, two polarographic methods for the determination of sodium diphenylamine sulfonate have been reported. They are based on the quantitative nitrosation of sodium diphenylamine sulfonate in H 2 SO 4 and NaNO 2 media, and their nitrosation products are then measured by polarography. The two methods are polarographic titration with standard NaNO 2 and single-sweep oscillographic polarography with pure diphenylamine sulfonate. The application of these two methods in the determination of the chemical reagent sodium diphenylamine sulfonate has shown satisfactory results.