Penetapan Kadar Kapasitas Tukar Kation pada Tanah di Laboratorium Tanah, Air dan Limbah Pusat Penelitian Kelapa Sawit (PPKS) Medan

Abstract

A cation exchange capacity determination analysis was conducted on soil in the soil, water and waste laboratory of the Palm Oil Research Center, Medan. The purpose of this analysis is to determine the content of cation exchange capacity contained in soil samples at the palm oil research center. By knowing the cation exchange capacity of the soil sample, the level of fertility of the soil can also be known. And also can know the factors that affect the value of the cation exchange capacity. The method used for this analysis is to use percolate distillation where NaCl is put into a distillation tube and later the distillate is accommodated in an erlenmeyer containing 1% borax acid and added 3 drops of conway indicator and then distilled. After that it is continued with titration using H2SO4. From the analysis results obtained, the cation exchange capacity values of the soil are 7.27 me/100 g; 9.94 me/100 g; 15.39 me/100 g; 14.08 me/100 g; 11.85 me/100 g; 9.49 me/100 g; 9.00 me/100 g, respectively. And with the results obtained it can be concluded that the cation exchange capacity of the soil is low.