Study On The Technique Of On-line Supported Liquid Membrane Extraction Combined With Flow Injection Spectrophotometric Determination And Its Application In Environmental Analysis

Natural environment is the material base on which human beings rely for existence. During the long historical development, human beings have been continuously obtaining material, energy and information from the environment by productive activities to create rich material as well as cultural and ethical civilization and discharge material and ethical products finally transferred, including many pollutants, into the environment. Especially since the industrial revolution, environmental pollution resulted from industrialization has become more and more severe, which has greatly hampered the sustainable development of economy and society. Recently, all the countries worldwide have set strict restrictions and requirements on the discharge guide lines of pollutants, and also greatly strengthened the power of environmental monitoring, in which monitoring on poisonous and harmful chemical materials is one important standard. Heavy metals such as Pb(â…¡), Cd(â…¡), Hg(â…¡), Cr(â…¥) and volatile phenol all belong to serious poisonous pollutants, among which heavy metal pollution might store and transfer in organisms, causing pollution of food chain and finally doing harm to human beings.Flow injection analysis, as a kind of analysis technique developed from 1970s, has received wide attention in international analytical chemistry circle. Flow injection analysis owns series of advantages such as high analytical speed, high accuracy and precision, low cost of reagent and sample, cheap equipment and simple operation, high generality as well as capability of combined use with many kinds of...