塑料科技2026，Vol.54Issue(3)：162-166,5.DOI:10.15925/j.cnki.issn1005-3360.2026.03.029
火焰原子吸收光谱法间接测定塑料复配添加剂中硬脂酸钙含量
Indirect Determination of Calcium Stearate Content in Plastic Compound Additives by Flame Atomic Absorption Spectrometry
摘要
Abstract
In the article,an analytical method for the determination of calcium stearate content in plastic compound additives was established based on hot filtration-wet digestion-flame atomic absorption spectrometry(FAAS).After the samples were pulverized,the effects of organic solvents on the separation and purification efficiency of calcium stearate and the effects of digestion conditions on the digestion efficiency of calcium stearate were investigated.The results showed that when dimethyl sulfoxide was used as the solvent and the samples were subjected to hot filtration treatment,calcium stearate was essentially completely separated from other interfering components(such as calcium carbonate);wet digestion using nitric acid as the digestion solution could effectively shorten the digestion time of calcium stearate.The pretreated test solution was analyzed for calcium content by FAAS,quantified by the external standard curve method,and converted to the calcium stearate content in the sample.Method validation demonstrated that calcium ions exhibited good linearity in the mass concentration range of 0～10.0 mg/L(R2=0.999 6),with spike recoveries of 98.57%～103.30%and a relative standard deviation of 1.62%.The method offered the advantages of simple operation,rapid analysis,high precision,and good accuracy,and was suitable for efficient quantitative analysis of calcium stearate in plastic compound additives.关键词
火焰原子吸收光谱法/复配添加剂/硬脂酸钙/润滑剂/热稳定剂/定量分析Key words
FAAS/Compound additives/Calcium stearate/Lubricants/Heat stabilizers/Quantitative analysis分类
化学化工引用本文复制引用
李涛,臧丽娟,钟安澜,麻玉龙,吕金龙,曾化雨..火焰原子吸收光谱法间接测定塑料复配添加剂中硬脂酸钙含量[J].塑料科技,2026,54(3):162-166,5.基金项目
贵州省科学院青年基金项目(黔科院J字[2024]3号、黔科院J字[2025]18号) （黔科院J字[2024]3号、黔科院J字[2025]18号）
贵州省重大科技成果转化项目(黔科合成果[2024]重大002) （黔科合成果[2024]重大002）
贵州省基础研究计划(自然科学)青年引导项目(黔科合基础-[2024]青年373) （自然科学）
贵州省科技支撑计划(黔科合支撑[2025]一般010) （黔科合支撑[2025]一般010）
