论文部分内容阅读
直接电位法测定精钒中钠,试验结果表明,共存离子干扰少,测读尚稳定,样品的检出下限为0.01％Na~+,相当于测试液为1×10~-5克Na~+。相对标准偏差20％左右,钠平均回收率为103％。
Direct potentiometric method for the determination of sodium in fine vanadium showed that there was less interference of coexisting ions and the reading was stable. The detection limit of the sample was 0.01% Na ~ +, which corresponded to 1 × 10 ~ -5 g Na + . The relative standard deviation of about 20%, sodium average recovery rate of 103%.