ICP-MS法测定小儿氨酚黄那敏颗粒中重金属及有害元素的含量
2021-09-28彭双杨海源张敏娟魏文芝
彭双 杨海源 张敏娟 魏文芝



中圖分类号 R917 文献标志码 A 文章编号 1001-0408(2021)18-2218-05
DOI 10.6039/j.issn.1001-0408.2021.18.07
摘 要 目的:建立同时测定小儿氨酚黄那敏颗粒中重金属铅(Pb)、镉(Cd)、铜(Cu)、汞(Hg)以及有害元素砷(As)含量的方法。方法:样品经微波消解后,以锗、铟、铋元素为内标,采用电感耦合等离子体质谱法(ICP-MS)测定。结果:Pb、As、Cu、Cd、Hg元素检测质量浓度的线性范围分别为1~20、0.5~10、5~100、0.5~10、0.2~4 ng/mL(r均大于0.997);检测限分别为0.041 1、0.013 2、0.057 3、0.009 0、0.005 4 ng/mL,定量限分别为0.137 0、0.044 0、0.191 0、0.030 0、0.018 0 ng/mL;精密度、重复性试验的RSD均小于6%,Pb、As、Cu、Cd元素稳定性试验(28 h)的RSD均小于5%,Hg元素稳定性试验(28 h)的RSD小于7%;平均加样回收率分别为89.44%(RSD=5.87%,n=9)、99.56%(RSD=5.46%,n=9)、96.12%(RSD=4.62%,n=9)、105.82%(RSD=2.80%,n=9)、90.23%(RSD=3.59%,n=9)。63批样品中,Pb、As、Cu、Cd、Hg等5种元素均有检出,含量分别为0.191 0~1.527 6、0.002 5~0.047 4、0.034 1~1.549 0、0.001 5~0.078 8、0.001 9~0.005 4 mg/kg。结论:该方法操作简便、灵敏、准确,可用于同时测定小儿氨酚黄那敏颗粒中5种元素的含量。
关键词 小儿氨酚黄那敏颗粒;电感耦合等离子体质谱法;重金属;有害元素
Determination of the Contents of Heavy Metals and Harmful Elements in Pediatric Paracetamol Artificial Cow-bezoar and Chlorphenamine Maleate Granules by ICP-MS
PENG Shuang1,2,3,YANG Haiyuan1,2,3,ZHANG Minjuan1,2,3,WEI Wenzhi1,2,3[1. Qinghai Provincial Drug Inspection and Testing Institute, Xining 810016, China; 2. NMPA Key Laboratory for Quality Control of TCM (Tibetan Medicine), Xining 810016, China; 3. Qinghai Provincial Key Laboratory of Modernization of Traditional Chinese and Tibetan Medicine, Xining 810016, China]
ABSTRACT OBJECTIVE: To establish a method for the content determination of heavy metals [lead (Pb), cadmium (Cd), copper (Cu), mercury (Hg)] and harmful elements [arsenic (As)] in Pediatric paracetamol artificial cow-bezoar and chlorphenamine maleate granules. METHODS: The samples were conducted pretreatment by microwave digestion instrument and determined by inductively coupled plasma mass spectrometry (ICP-MS) using elements germanium, indium, bismuth as internal standard. RESULTS: The linear ranges of Pb, As, Cu, Cd and Hg were 1-20, 0.5-10, 5-100, 0.5-10 and 0.2-4 ng/mL, respectively (all r>0.997). The limits of detection (LODs) were 0.041 1, 0.013 2, 0.057 3, 0.009 0, 0.005 4 ng/mL, respectively. The limits of quantification (LOQs) were 0.137 0, 0.044 0, 0.191 0, 0.030 0, 0.018 0 ng/mL, respectively. RSDs of precision and repeatability tests were all less than 6%. RSDs of stability tests (28 h) of Pb, As, Cu and Cd were all less than 5%, and that of stability test (28 h) of Hg was less than 7%. The average recoveries were 89.44%(RSD=5.87%,n=9),99.56%(RSD=5.46%,n=9),96.12%(RSD=4.62%,n=9),105.82%(RSD=2.80%,n=9)and 90.23%(RSD=3.59%,n=9), respectively. Five elements were all detected in 63 batches of samples, and the contents of them were 0.191 0-1.527 6, 0.002 5- 0.047 4, 0.034 1-1.549 0, 0.001 5-0.078 8 and 0.001 9-0.005 4 mg/kg, respectively. CONCLUSIONS: The method is simple, sensitive and accurate. It is suitable for simultaneous determination of 5 elements in Pediatric paracetamol artificial cow-bezoar and chlorphenamine maleate granules.
KEYWORDS Pediatric paracetamol artificial cow-bezoar and chlorphenamine maleate granules; ICP-MS; Heavy metals; Harmful elements
小儿氨酚黄那敏颗粒为复方制剂,主要成分为对乙酰氨基酚、马来酸氯苯那敏和人工牛黄[1]。该药为儿童抗感冒药,临床上主要用于治疗感冒引起的头痛、发热、咽喉痛、鼻塞等症。小儿氨酚黄那敏颗粒的质量标准未收载于《中国药典》历版及现行版中,主要执行国家药品标准(试行)WS-10001-(HD-0214)-2002,其检测内容包括性状、鉴别、装量差异、粒度、溶化性、干燥失重和含量测定,但不包含有关物质、重金属元素检测等[1]。
儿童用药的安全性一直是各国关注的重点,我国儿童人口基数庞大,根据2020年国家统计局数据显示,2019年我国儿童人口为2.35亿人,占全国总人口的16.8%[2]。随着我国儿童人口数量的持续增加,儿童药物市场需求也随之增加,故儿童药物的安全性与风险评估成为了药物研发与监管工作领域的热点[3]。小……
