Research On Automatic Analytical Method Of Zinc And Chemical Oxygen Demand In Water Environment

Water, the rare natural resource to human being, is the fountain of life. Ocean which covers or so 71 percentage of the earth is the largest water unit in the earth. It occupies more and more important status in the development of the present society. In 21^th century, the world is pacing a new era when people are willing to know, explore and protect the water environment. With the development of social economy, water environment is polluted by most castoffs discharged into river and ocean directly or indirectly during manufacture and living. Along with our country entering WTO and the continuously speedy growth of the economy, protecting water environment, maintaining its ecosystem in a good condition, supervising and treating polluted it and preventing it from getting further polluted have become the pressing problems that should be tackled urgently.The automatic analytical method of Flow Injection Spectrophotometry (FIS) to determine Zinc and Chemical Oxygen Demand in water body is established and researched through experiments. They preferably overcome the traditional manual analytical method's disadvantages, such as operating complicatedly, easily causing artificial errors, consuming more time and reagents. They can easily realize the automatic online analysis of Zinc and COD in water body in the true sense and are also two kinds of green analytical method that are environmental benign, which have good application prospect in oceanic analyzing and supervising fields.On the one hand, the coloring system of zinc with potassium thiocyanate,...