Direct high sensitive spectrophotometric method for determination
Ni(III) has been suggested . proposed method is based on the
formation of red- win colored complex between Ni(III) and DMG
reagent in strong alkaline media of NaOH ,pH=12.5.the formed
complex absorbed electromagnetic radiation at 465nm .
This paper presents a study to reduction of heavy crude oil viscosity by
heating, where we select the best of temperature for all types instead of
constant temperature, whatever composition and viscosity of crude oil.