Analisa Kadar Kalsium Oksida (CaO) dan Magnesium Oksida (MgO) pada Pupuk Dolomit dan Kiserit secara Titrasi Kompleksometri

Abstract

Manure of dolomite and kieserite have content of CaO and MgO big enough and very be benefit to fertility of land. Rate of CaO and MgO can be analyzed with titration method of Compleksometry by using standard condensation of Complexon III. Rate analysis of CaO done at concentration of pH > 12 by using indicator of murexide, while analysis of MgO done at pH 10 by using indicator of EBT. From the result of analysis at manure dolomite discovered by rate CaO of equal to 30,24 % - 39,34 % while rate MgO of equal to 18,65 % - 21,71 %. While result analysis at manure Kieserite discovered by rate CaO of equal to 0,41% - 0,97 % while rate MgO of equal to 27,14 % - 29,57 %. From result analysis to show this manure is used good for the land ground fertilization.