Nailul Husni Asfar Chemistry Department, Faculty of Mathematics and Natural Sciences
Padang State University
Jl. Prof. Hamka, Air Tawar Barat, Padang, 25131, Indonesia Indonesia
Jon Efendi Chemistry Department, Faculty of Mathematics and Natural Sciences
Padang State University
Jl. Prof. Hamka, Air Tawar Barat, Padang, 25131, Indonesia