摘要
用乳化剂OP乳化样品的乙酸丁酯溶液而配制成乳浊液,建立了乳化技术 火焰原子吸收光谱法快速测定石油磺酸钙中钙的新方法。以La3+作为释放剂,以水为参比用工作曲线法测定。实验表明,试液的黏度与水一致,不存在背景吸收干扰。测定结果的相对标准偏差小于0.8%。加标回收率100.4%～101.0%,线性范围0～12μg mL,检出限为0.64μg mL。本方法测定结果与灰化法一致,相对误差小于±1.4%。
The butyl acetate solutions of sample were emulsified by the emulsifier OP to prepare emulsion. An analytical method for rapid determination of calcium in petroleum calcium sulfonte by emulsification technology-flame atomic absorption spectrometry was established. La^(3+) was used as a releasing reagent. The working curve method was used for the determination with a reference water. The experimental results indicated that viscosity of test solution was identical with that of water and no background absorption was found. The relative standard deviation was less than 0.8%. The recovery obtained was in the range of 100.4%～101.0%. The linear range was 0～12 μg/mL. Detection limit was (0.64 μg/mL). The determination results were consistent with those obtained by ashing method. The relative error between them was less than ±1.4%. This method is convenient.
出处
《分析试验室》
CAS
CSCD
北大核心
2004年第10期72-73,共2页
Chinese Journal of Analysis Laboratory
