CAJ | 학술논문

以碳酸钙为熔剂高温分解，硝酸浸取、硫酸沉淀的方法处理碳化硼样品，稀释后直接进行多接收电感耦合等离子体质谱分析，对碳化硼中的硼同位素丰度进行测定。扫描电镜分析结果表明，碳化硼颗粒形状不规则，尺寸小于50μm。利用建立的方法处理样品，可实现碳化硼样品的完全溶解，回收率接近100%。对样品中10B丰度进行分析，相对标准偏差为0.023%～0.035%（n=6），测量结果与参考值在不确定度范围内保持一致，证明实验方法可行。所建立的碳化硼样品测量方法样品处理步骤简便，分析速度快，测量精度高，可作为碳化硼中硼同位素丰度的常规分析方法。
이탄산개위용제고온분해，초산침취、류산침정적방법처리탄화붕양품，희석후직접진행다접수전감우합등리자체질보분석，대탄화붕중적붕동위소봉도진행측정。소묘전경분석결과표명，탄화붕과립형상불규칙，척촌소우50μm。이용건립적방법처리양품，가실현탄화붕양품적완전용해，회수솔접근100%。대양품중10B봉도진행분석，상대표준편차위0.023%～0.035%（n=6），측량결과여삼고치재불학정도범위내보지일치，증명실험방법가행。소건립적탄화붕양품측량방법양품처리보취간편，분석속도쾌，측량정도고，가작위탄화붕중붕동위소봉도적상규분석방법。
A method was developed for the abundance analysis of boron in boron carbide samples by multi-collector inductively coupled plasma mass spectrometry(MC–ICP–MS). The samples were melted with calcium carbonate in muffle furnace, and then dissolved in nitric acid,finally sulfuric acid was added to precipitate the calcium. The particle of boron carbide was analysized by scan electron microscope(SEM). The results showed that the particle shape of boron carbide particle distributed anomaly and the size was less than 50μm. By this method, the boron carbide samples were dissolved entirely and the recovery of whole procedure was approached to 100%. The measurement results of10B abundance obtained were in good accordance with reference value within their expanded uncertainty, which proved the feasibility of the experiment method. The relative standard deviations were 0.023%–0.035%(n=6). The method developed can be applied for the abundance analysis of boron in boron carbide, which have the advantage of simple pretreatment of sample, fast analysis and high measurement precision.