摘要
采用微波消解法处理藠头样品,电感耦合等离子体发射光谱(ICP-AES)测定其中Al,Na,K,Cr,Mg,Zn,Mn,Fe,Ca,Sr和Cu 11种微量元素的含量。选择ICP仪器的最佳测定条件:射频功率1300W,载气流量0.20 L/min,冷却气流量8 L/min,等离子气流量0.55 L/min,试液提升量1.5mL/min。方法检出限为0.00030～0.00468μg/mL,回收率为91.08%～107.90%,相对标准偏差(RSD)均小于3.98%。该法操作简便,可靠,重现性好,可以作为藠头的质量控制方法之一。
The contents of eleven kinds of trace elements, such as AI, Na, K, Cr, Cu, Fe, Mg, Mn, Ca, Sr and Zn in Allium chinense are determined by ICP-AES, and the samples of Allium chinense are pretreated by Microwave Digestion Method. The optimal conditions of ICP instrument are as follows. RF power is 1300 W, the flow rate of carrier gas is 0. 20 L/min, the flow rate of cooling gas is 8 L/min, the flow rate of plasma gas is 0.55 L/min, and the lifting amount of test solution is 1.5 mL/min. The detection limits are 0. 00030～0. 00468μg/mL, the recovery rates are 91.08%～ 107.90%, RSDs are all less than 3.98%. This method is easy to operate, accurate and reproducible, and it is regarded as one of quality control methods for Allium chinense.
出处
《中国调味品》
CAS
北大核心
2013年第4期111-113,共3页
China Condiment
基金
贵州省科技创新人才团队项目
黔科合人才团队(20104011)
毕节学院实验室开放基金项目(20120003)
毕节学院化学与化学工程学院大学生科研项目(HX201205)
