METHOD FOR SPEEDILY MEASURING SOIL POSITIVE ION SUBSTITUTION CAPACITY BY ADSORPTION OF COPPER AND SPECTRO-PHOTOMETER

摘要

PURPOSE: A method for speedy measuring of a positive ion substitution capacity by copper adsorption and a spectro-photometer is provided to simplify the analysis manipulation to be carried out in a short time by using a copper solution, thereby precisely recognizing an amount of fertilizer used in the soil at a low cost. CONSTITUTION: In a method for speedy measuring of a positive ion substitution capacity of soil, a copper solution is added to the soil to be adsorbed and saturated so that a concentration of remains of the copper solution is measured by a spectro-photometer, wherein the copper solution includes copper acetate, sulfur copper, chloride copper(II), phosphate copper, copper acetylacetonate, nitric acid copper, copper oxide and the like and has a concentration of 0.02-2N to be added to 0.1-20.0g of the soil so that copper ions are saturated and adsorbed to negative charges of the soil.