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利用Ｎ－亚硝基化合物的化学去亚硝基反应，建立了一种间接测定Ｎ－亚硝基化合物的分光光度法。实验结果表明，Ｎ－二苯基亚硝胺在 ０ ２～ ９．０ ｍｇ／Ｌ浓度范围内呈线性关系。该法应用于香烟烟丝及侧流烟雾卒取液的分析，４次测定ＲＳＤ及回收率分别为１．８６％～６．３２％，８６．２％～９６．６％；３．０１％～５．０３％，１０１．１％～１０９．１％。
A spectrophotometric method for the indirect determination of N-nitroso compounds was established using the chemical nitroso reaction of N-nitroso compounds. The experimental results show that N-diphenyl nitrosamines linear in the concentration range of 0 2 ~ 9.0 mg / L. The method was applied to the analysis of cigarette smoke and sidestream smoke. The RSDs and recoveries of four times were 1.86% ~ 6.32%, 86.2% ~ 96.6%, 3.01% ~ 5.03%, 101.1% ~ 109.1%.