Gửi bạn 2 bài báo tham khảo
1) Direct Determination of Zinc Using Dithizone in Micellar Solution
http://www.informaworld.com/smpp/201...94~tab=content
Determination of bismuth and zinc in pharmaceuticals by first derivative UV–Visible spectrophotometry
linkinghub.elsevier.com/retrieve/pii/S0003267005003995
và 1 bài báo tiếng Việt,
http://www.kh-sdh.udn.vn/zipfiles/sv...doan%20thi.pdf
Thân!