Determination of camphor and menthol in compound camphor liniment by GC and evaluation of uncertainty
-
摘要: 目的 建立测定复方樟脑搽剂中主要成分樟脑和薄荷脑含量的气相色谱(GC)法,并探讨不确定度评估方法。 方法 采用GC法,以萘为内标物,Thermo TG-WAXMS毛细管柱(30.0 m×0.25 mm,涂层厚0.5 μm),FID检测器;分析测量过程不确定度的来源,建立数学模型,计算合成标准不确定度和扩展不确定度。 结果 樟脑和薄荷脑分别在8.56~85.6μg/ml、11.2~112.0 μg/ml质量浓度范围内线性关系良好,樟脑平均加样回收率100.20%、RSD为0.892%(n=9),薄荷脑平均加样回收率99.65%、RSD为1.369%(n=9);扩展不确定度分别为0.630 mg/ml (k=2)、0.656 mg/ml (k=2),樟脑含量为(20.74±0.630) mg/ml、薄荷脑含量为(20.48±0.656) mg/ml。 结论 气相色谱方法准确、灵敏、重现性好,可用于复方樟脑搽剂中樟脑和薄荷脑含量测定;不确定度评定有利于进一步提高含量测定的准确性。Abstract: Objective To establish a gas chromatography (GC) method to determine the contents of camphor and menthol in compound camphor liniment and to evaluate the uncertainty. Methods Thermo TG-WAXMS (30.0 m×0.25 mm, 0.5 μm) and FID were used with naphtalinas as internal standard. The uncertainty sources of measurement were analyzed and a mathematical model was established to calculate the combined standard uncertainty and the expanded uncertainty. Results A good linear relationship was observed in the concentration range of 8.56-85.6μg/ml for camphor and 11.2-112.0 μg/ml for menthol, the average recoveries were 100.20% and 99.65% with RSD 0.892% and 1.369% (n=9). The expanded uncertainty U95 were 0.630 mg/ml (k=2), 0.656 mg/ml (k=2), The content of camphor was (20.74±0.602) mg/ml and menthol was (20.48±1.336) mg/ml. Conclusion The method is accurate, sensitive. It has good repeatability for controlling the quality of camphor and menthol in compound camphor liniment. The mathematic model of uncertainty can be used to improve the assay accuracy.
-
Key words:
- GC /
- compound camphor liniment /
- content determination /
- measurement uncertainty
-
[1] 中国人民解放军总后勤部卫生部.中国人民解放军医疗机构制剂规范(2002年版)增补本[M].北京:人民军医出版社,2007:35. [2] 全国法制计量管理计量技术委员会.测量不确定度评定与表示(JJF1059.1-2012)[S].北京:中国计量出版社,2013. [3] 中国合格评定国家认可委员会.测量不确定度要求的实施指南(CNAS-GL05:2011)[S]. 北京:中国计量出版社,2011. [4] 中国合格评定国家认可委员会.化学分析中不确定度的评估指南(CNAS-GL06:2006)[S].北京:中国计量出版社,2006. [5] 国家质量监督检验检疫总局.常用玻璃量器检定规程(JJG196-2006)[S].北京:中国计量出版社,2006. [6] 盖静,王俊丽,安宝文,等. HPLC-DAD法测定复方樟脑搽剂中樟脑和苯酚的含量[J].西北国防医学杂志,2015,36(2):87-89. [7] 陆松伟,宋洪杰,陈方剑. HPLC法同时测定复方樟脑搽剂中苯酚和樟脑含量[J].药学实践杂志, 2011,29(5):347-349. [8] 盖静,盖丽,张烨. 变换波长法测定复方樟脑搽剂中樟脑和苯酚的含量[J].中兽医医药杂志, 2017,36(2):42-44. [9] 凌云,杨杨,傅秋生,等. 复方樟脑搽剂中三组分的含量测定[J].解放军药学学报, 2014,30(5):431-434. [10] 谷娜,郭胜才. 高效液相色谱法测定复方樟脑搽剂中苯酚的含量[J].实用药物与临床, 2013,16(4):316-317. [11] 王俊丽,李加恒,盖静. 毛细管气相色谱法同时测定复方樟脑搽剂中樟脑、薄荷脑含量[J].西北国防医学杂志, 2016,37(3):164-165. [12] 高梅,张耀,贾茹.顶空-气相色谱法测定咳速停糖浆中薄荷脑的不确定度[J]. 广东化工, 2015,42(7):155-171. [13] 黄诗前.顶空气相色谱法测定十滴水中的乙醇量[J].中国医院用药评价与分析, 2010,10(5):466-448. [14] 李燕,吴皓东,郝宇薇,等. GC法测定唇香草挥发油中胡薄荷酮的含量[J].新疆医科大学学报, 2017,40(9):1136-1141. [15] 姚鑫,程宗琦,姜玮,等.气相色谱法测定复方薄荷脑滴鼻液中樟脑与薄荷脑的含量[J]. 西北药学杂志, 2017,32(5):594-596. [16] 吴查青,王发英,关晓娟.顶空气相色谱法测定厚朴中β-桉油醇含量的方法研究[J].中国生化药物杂志, 2017,37(9):29-33.
计量
- 文章访问数: 3121
- HTML全文浏览量: 278
- PDF下载量: 379
- 被引次数: 0