PEMODELAN PERUBAHAN DISSOLVED OXYGEN PADA POLUTAN DAN SEDIMENTASI DI PERTEMUAN DUA SUNGAI MELALUI PENDEKATAN SEM

Abstract

Confirmatory analysis on SEM has been done involving some indocators of latent varibale measure. Latent variable measure indicators of polutant are DO, COD, BOD, temperature, and pH. While latent variable measure indicators of polutant and sedimentation are TSS, TDS, COD, BOD and DO. The data are collected in a confluence of two rivers tharefore it directly relates to river hydrodynamic elements such as water debit, water vilocity, and river deepness. DO is served as the condition for food availability at water ecosystem and the limit factor or the main regulator for water organisms’ health and sustainability. Through the classic test, multicoliniarity condition and conformatory analysis at SEM with the assitent of LISREL result that the estimation of DO consentration is significant and has a positive relationship toward the polutant with loading factor � = 0.6 and thit= 14.38. Meanwhile, DO consentration in polutant and sedimentation is not significant which means DO indicator is not valid to measure polutant and sedimentation in the confluence of two rivers which loading factor � = - 0.015 and thit = - 0.23. Therefore, it can be concluded that sedimentation influences the change of DO.