Which indubitably indicate that the bismuthous sulfide can only dissolve in halogen acid except hydrofluoric acid, the mixed solution of dilute sulfuric acid and alkali halide.

结果表明硫铋只能溶于氢酸（除氢氟酸外）、稀硫酸的混合液中，不能溶于稀硫酸中。

It is studied further that the dissolubility of the bismuthous sulfide in the solutions of the non-oxidative strong acid through the experiment by means of chemical thermodynamics.

运用学热力学基础理论和方法研究了硫铋在无氧性强酸和可溶性溶液中的溶解性。