碳化硼是对酸最稳定的物质之一，一般用熔融法分解〔１，２〕。作者欲用湿法分解测定表１中试样的含氮量，就必须对它的化学稳定性进行研究，在此基础上拟定出既能溶解碳化硼，又不损失氮量的湿溶体系。文献〔３〕介绍硼与碳的化合物有Ｂ１２Ｃ，Ｂ１３Ｃ２和Ｂ４Ｃ，但只... Boron carbide is one of the most stable substances on the acid, the general use of melting decomposition [1,2]. The authors want to use the wet method to determine the nitrogen content of the sample in Table 1, we must study the chemical stability of the sample, and on this basis, draw out a wet-dissolving system that can dissolve boron carbide without losing the nitrogen content. Literature [3] Introduction of boron and carbon compounds have B12C, B13C2 and B4C, but only ...