原子吸收火焰光谱法测定羧甲基纤维素钠取代度的研究

Determination the Substitution Degree of Sodium Carboxymethyl Cellulose by Flame Atomic Absorption Spectrometry

使用微波消解仪处理样品，采用原子吸收火焰光谱法测试羧甲基纤维素钠中的钠含量．通过钠含量计算羧甲基纤维素钠的取代度。该方法与传统的国家标准（GB1886．232—2016）灰化法相比较，测试简单，更加准确、快速，可对羧甲基纤维素钠取代度检测提供一种优良的技术手段。

The sodium content in sodium carboxymethyl cellulose was determined by flame atomic absorption spectrometry, and the substitution degree of sodium carboxymethyl cellulose was calculated by the sodium content. This method was more accurate and faster than the traditional national standard（GB 1886.232-2016）. Andit can provide a good technical means for the determination of the substitution degree of sodium carboxymethyl cellulose.