高效液相法与气质联用法测定白酒中对乙酰氨基酚的比较
2019-10-21景赞刘超黄志勇杨永刚
景赞 刘超 黄志勇 杨永刚



摘 要:目的:建立白酒中非法添加物对乙酰氨基酚的液相和气质联用检测方法,并比较两种方法的差异性。方法:液相法样品直接过滤进样检测,气质联用法采用二氯甲烷提取,QuEChERS净化进样检测,从线性关系、定量限、回收率、精密度及实际样品测定等方面比较差异性。结果:两种方法线性关系良好,回收率81.4%~98.1%,
精密度0.9%~3.0%,气质法定量限0.15 mg·kg-1,液相法定量限0.60 mg·kg-1。结论:液相法和气质法均适合基层检验机构开展对乙酰氨基酚的检测,可以灵活选择。
关键词:白酒;高效液相;气质联用;对乙酰氨基酚;非法添加
Abstract:Object: To compare HPLC and GC-MS/MS for determination of acetaminophen in Chinese spirit. Methods: Samples were filtered before injected to the HPLC, the compound was carried out on ODS-3 C18 column using methanol and ammonium acetate (10+90, 50 mmol·L-1) as mobile phase. The other sample was extracted with dichloromethane and separated by VF-1701ms column. Compare the differences of two methods from recovery, precision, limit quantitation and actual samples respectively. Results: Good linearity was observed in the ranges of 0~10 mg·kg-1 and the limit of quantitation was 0.15 mg·kg-1 and 0.60 mg·kg-1. The method had a great recovery in the concentration range of 1~10 mg·kg-1,
the recovery was 81.4%~98.1%, the precision was 0.9%~3.0%. Conclusion: The simplicity, sensitivity and good precision of the methods made it is well suitable for determination of acetaminophen in Baijiu.
Key words:Chinese spirit; HPLC; GC-MS/MS; Acetaminophen; Illegally add
中图分类号:O657.63;TS262.3
我国是白酒的生产、消费大国,白酒也承载着文化与历史的双重底蕴,但近几年白酒行业的食品安全问题不容乐观,塑化剂、甜味剂、工业酒精勾兑假酒及虚标年份等问题时有发生,2016年相关报道称,个别经销商在白酒中非法添加对乙酰氨基酚,俗称“头痛粉”,并对外宣称饮用该酒不上头,醉酒后不头疼[1-2]。
对乙酰氨基酚是一种常用的解热镇痛药,别名扑热息痛,日常使用中要遵循医嘱,并注意各种禁忌,非法添加在白酒中有很大的安全隐患,长期饮用易造成肝肾功能损伤。目前检测对乙酰氨基酚的方法主要有液相色谱法、液质联用法、近红外漫反射、拉曼光谱法及气相色谱法,主要应用在药品含量测定以及临床研究、代谢组学等方面,应用液相法和气质联用法检测白酒中对乙酰氨基酚尚未有报道[3-8]。液相色谱仪在基层检测单位的普及率较高,气质联用仪也有一定的覆盖,本文可为灵活选用合适的检测方法,有效监管此类非法添加提供可靠及时的检测手段。……
