NGHIÊN CỨU BIẾN TÍNH ĐIỆN CỰC BẰNG GRAPHEN OXIDE DẠNG KHỬ ĐỂ XÁC ĐỊNH ACID ASCORBIC, PARACETAMOL VÀ CAFFEIN

Trần Thanh Tâm Toàn, Trần Minh Trí, Nguyễn Hải Phong

DOI: http://dx.doi.org/10.26459/hueuni-jns.v126i1D.4560

Abstract


Graphene oxide (GO) được khử bằng điện hóa (ERGO/GCE) trên bề mặt điện cực glassy carbon (GCE). Với điều kiện đã tối ưu, phương pháp DP-ASV được sử dụng để phân tích đồng thời ascorbic acid, paracetamol và caffeine với khoảng tuyến tính là 20-459 µM,  4-91 µM, 20-441 µM, giới hạn phát hiện (3Sy/x/b) (LOD) là 3,71; 1,68; 2,45 µM và giới hạn định lượng (LOQ) là 11,1; 5,03; 7,34 µM tương ứng của ascorbic acid (AA), paracetamol (PAR) and caffeine (CAF). 


Keywords


simultaneous, acid ascorbic, paracetamol, caffeine, electrochemical reduce graphene oxide.

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