Title An amplified electrochemical sensor employing one-step synthesised nickel-copper-zinc ferrite/carboxymethyl cellulose/graphene oxide nanosheets composite for sensitive analysis of omeprazole Type of Research Article Keywords - Abstract - Researchers Biuck Habibi (First Researcher)، (Second Researcher)، ali pashazadeh (Third Researcher)، Lotf-Ali Sagathforoush (Fourth Researcher)