利用十二烷基硫酸钠的增感作用测定金属钨及三氧化钨中的锰

来源期刊：中南大学学报(自然科学版)1986年第2期

论文作者：范健 莫晓山 罗立新

文章页码：78 - 82

关键词：原子吸收分光光度法； 钨中锰的测定； 十二烷基硫酸钠

Key words：Atomic absorption spectrophotometry determination of manganese in tungsten； sodium dodecyl sulfate

摘    要：本文研究了十二烷基硫酸钠(SDS)在原子吸收分光光度法测定钨中锰的增感作用及抑制基体干扰作用,并制定了分析方法。在6%SDS存在下,测定钨中锰的特征浓度为0.035μg/ml/1%,直线浓度范围为0-5μg/ml,并且高至1.0g/50ml的钨也不干扰。该法简便、快速,准确度和精密度均符合要求。对增感机理也进行了探讨。

Abstract: Atomic absorption spectrophotometry for determination of manganese in tungsten and tungsten oxide by enhancing effect of sodium dodecyl sulfate (SDS) was proposed. In the presence of 6% SDS, the characteristic concen- tration of manganese in tungsten is 0. 035g/ml/1%. The calibration graph is rectilinear for up to 5μg/ml of Mn. Tungsten of up to 1. 0g/50ml does not interfere, either. The RSD is<3% for 0. 0x-0. 00x% of Mn. The de- termination is rapid and simple. The mechanism of enhancing effect is also discussed.