高效液相色谱-串联质谱法测定盐酸二甲双胍及其制剂中痕量N-亚硝基二甲胺  

Determination of N-nitrosodimethylamine in metformin hydrochloride and its preparations by high performance liquid chromatography-tandem mass spectrometry

作　　者：郭常川 刘琦 张雷 郑静 汪勇 杨书娟 褚志杰[3] 牛冲 徐玉文 GUO Changchuan;LIU Qi;ZHANG Lei;ZHENG Jing;WANG Yong;YANG Shujuan;CHU Zhijie;NIU Chong;XU Yuwen(Shandong Institute for Food and Drug Control, Jinan 250101, China;Shimadzu (China) Co. Ltd., Beijing 100020, China;Shandong Provincial Hospital of Traditional Chinese Medicine, Jinan 250014, China)

机构地区：[1]山东省食品药品检验研究院,山东济南250101 [2]岛津企业管理(中国)有限公司,北京100020 [3]山东省中医院,山东济南250014

出　　处：《色谱》2020年第11期1288-1293,共6页Chinese Journal of Chromatography

基　　金：国家自然科学基金项目(81573606,81973486).

摘　　要：建立了高效液相色谱-串联质谱(HPLC-MS/MS)检测盐酸二甲双胍原料和制剂中N-亚硝基二甲胺(NDMA)含量的方法。样品以水为提取溶剂,经涡旋混匀、恒温振荡、高速离心、微孔过滤后进行HPLC-MS/MS分析。采用ACE EXCEL 3 C18-AR色谱柱(150 mm×4.6 mm,3μm)分离,流动相为均含0.1%甲酸的水和甲醇溶液,梯度洗脱,流速0.8 mL/min,柱温40℃,自动进样器温度10℃。采用阀切换技术保护质谱仪,设置六通阀切换使保留时间2.85~7.00 min的流动相进入质谱,其余时间流动相进入废液。质谱部分采用大气压化学电离(APCI)源,在正离子、MRM模式下扫描,雾化器流量为3 L/min,加热器流量为10 L/min,接口温度为300℃,脱溶剂管温度为250℃,加热块温度为400℃,干燥器流量为10 L/min。NDMA定量离子对为m/z 75.0→43.1,碰撞能量(CE)为-17.0 eV,定性离子对为m/z 75.0→58.2,CE为-16.0 eV。采用外标法定量。对方法进行了详细的方法学验证,结果表明,该法专属性良好,溶剂和辅料对NDMA测定无干扰。NDMA峰面积与其质量浓度在1.00~100.00 ng/mL范围内呈现良好的线性关系,相关系数(r)>0.9999;低、中、高3个水平下NDMA的回收率为94.55%~114.67%,RSD为4.73%~13.46%;检出限和定量限分别为0.20 ng/mL和1.00 ng/mL;NDMA在自动进样器放置0、8、24 h的峰面积RSD为2.08%。使用该方法对113批盐酸二甲双胍原料和制剂供试品中的NDMA进行测定,发现原料药中NDMA检出量不超限,但有8批二甲双胍制剂超过了限度。该法灵敏、准确,操作简便,可用于盐酸二甲双胍原料及制剂中的NDMA检测。A method was established for the determination of N-nitrosodimethylamine(NDMA)in metformin hydrochloride active pharmaceutical ingredient(API)and preparation samples by high performance liquid chromatography-tandem mass spectrometry(HPLC-MS/MS).Water was used as the extraction solvent for the metformin hydrochloride API and preparation samples.The samples were analyzed by HPLC-MS/MS after vortex mixing,constant temperature shaking,high speed centrifugation and microfiltration.An ACE EXCEL 3 C18-AR column(150 mm×4.6 mm,3μm)was used for chromatographic separation.The mobile phases were water and methanol both containing 0.1%formic acid with gradient elution.The flow rate,column temperature,and autosampler temperature were set as 0.8 mL/min,40℃,and 10℃,respectively.The valve switching technique was used to protect the mass spectrometer,while six-way valve switching was adopted to allow the mobile phase with a retention time of 2.85-7.00 min to enter the mass spectrometer and the mobile phase with other retention times to enter the waste liquid.For the mass spectrometer,an atmospheric pressure chemical ionization(APCI)ion source was used in positive ion MRM scanning mode.The other conditions were as follows:atomizer flow,3 L/min;heater flow,10 L/min,interface temperature,300℃;desolvation line(DL)temperature,250℃;heating block temperature,400℃;and dryer flow,10 L/min.The quantitative transition of NDMA was m/z 75.0→43.1 with a collision energy of-17.0 eV,while the qualitative transition was m/z 75.0→58.2 with a collision energy of-16.0 eV.The external standard method was utilized for quantitative analysis.The established method was validated in detail by investigating the specificity,linear range,limit of detection,limit of quantification,recovery,precision,and stability.This method showed good specificity,since the solvents and excipients did not interfere with the determination of NDMA.A good linear relationship was observed the NDMA peak area and the mass concentrations in the range of 1.00-100.00 n

关 键 词：高效液相色谱-串联质谱 痕量测定 N-亚硝基二甲胺 二甲双胍 

分 类 号：O658[理学—分析化学]