电感耦合等离子体发射光谱法测定镍基钎料中硼

探讨了电感耦合等离子体发射光谱法(ICP-AES)测定镍基钎料中硼的分析条件.试样经王水低温溶解,然后高温发硫酸烟,选择182.641 nm作为分析谱线,同时采用基体匹配法配制标准样品,不仅有效降低了基体效应,同时解决了无标校正的问题,校准曲线的线性范围为0~0.06 mg/mL,相关系数为0.999 98.方法应用于实际样品分析,方法检出限为3×10^(-5)mg/mL(n=11),方法相对标准偏差为0.32%~0.65%,回收率为99.2%~100.6%.

Determination of Boron in Nickel-Based Brazing Material by ICP-AES

The analytical conditions of boron in nickel-based brazing material by ICP-AES were discussed in this paper. The samples were dissolved in aqua regia at low temperature, and fumed in sulfuric acid at high temperature with a large quantity of smoke. The standard samples were prepared according to the matrix matching method, which not only reduced the matrix effect, but also solved the problem of lack of standard reference material. The linearity range was 0~0.06 mg/mL with a correlation coefficient of 0.999 98. The contents of boron in the nickel-based brazing samples were determined by ICP-AES using the spectral line of 182.641 nm. The detection limit was 3×10^-5mg/mL (n=11). The relative standard deviations (RSD) was 0.32%~0.65% and the recovery was 99.2%~100.6%.