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研究了氟化钠－氯化亚锡还原磷钼蓝光度法测定钢铁中磷的方法的稳定性问题，发现了其吸光度随时间变化的规律，研究了该变化规律的影响因素，用实验方法探讨了其吸光度变化的原因，得到了较肯定的结论为该测定方法的改进奠定了基础。
The stability of the method for determination of phosphorus in steel by sodium fluoride-stannous chloride reduction phosphomolybdate blue spectrophotometry was studied. The law of the change of absorbance with time was found. The influencing factors of the change rule were studied. The reasons for the change of absorbance obtained more certain conclusions as the basis for the improvement of the determination method.