论文部分内容阅读
采用离子色谱法进行了钙镁片中Ca~(2+)和Mg~(2+)的含量测定,过程为:先采用盐酸将样品溶解之后,采用阳离子交换色谱柱分离,用阳离子抑制器,分别进行精密度试验,重复性试验,加样回收率试验,系统适用性试验,最后结果检测。实验结果表明Ca~(2+)和Mg~(2+)的质量浓度处于2~18mg·L~(-1)和0.4~9mg·L~(-1)之间时,具有标准的线性关系,其相关系数都接近于1;Ca~(2+)和Mg~(2+)的检出浓度为0.003mg·L~(-1)和0.015mg·L~(-1),其定量浓度为0.004mg·L~(-1)和0.002mg·L~(-1),回收率也均接近100%;实验测的5批样品中Ca~(2+)的含量分别为13.5%、14.8%、15.0%、16.3%、10.6%,Mg~(2+)的含量分别为5.2%、3.8%、4.5%、6.0%、3.9%。
The content of Ca2 + and Mg2 + in calcium and magnesium tablets was determined by ion chromatography. The process was as follows: firstly, hydrochloric acid was used to dissolve the sample, and then cation exchange chromatography was used to separate the samples. Using cation suppressor, Respectively, precision test, repeatability test, sample recovery test, system suitability test, the final test results. The experimental results show that when the mass concentration of Ca 2+ and Mg 2+ is between 2 ~ 18 mg · L -1 and 0.4 ~ 9 mg · L -1, there is a standard linear relationship , And their correlation coefficients were close to 1. The detection concentrations of Ca 2+ and Mg 2+ were 0.003 mg · L -1 and 0.015 mg · L -1, The recoveries were also close to 100% for 0.004 mg · L -1 and 0.002 mg · L -1, respectively. The contents of Ca 2+ in the five batches of samples were 13.5% and 14.8%, respectively %, 15.0%, 16.3%, 10.6% and Mg 2+ were 5.2%, 3.8%, 4.5%, 6.0% and 3.9%, respectively.