An inquiry has been made through analytics on the subject of increasing rate of sodium nitrite/sodium nitrate in aqueous alkali from the absorption of nitric acid plant tail gas.

• 通过解析法研究，对提高硝酸尾气碱吸收循环母液亚／硝比的问题进行了理论探讨，认为，对于多级串联碱吸收法，各塔吸收率对总吸收率的贡献具有等效性。