Kompleksometri Kalsium dan SSA Timbal Beberapa Depot Air Isi Ulang di Medan

Abstract

Calcium minerals play an important role in maintaining body functions, while Lead is a dangerous heavy metal. The research was aimed at determining the levels of Calcium and Lead from several refill water depots in Medan. Calcium complexometry and lead AAS as their respective assay methods. Research shows calcium levels are 10.3-29.3 mg/L, correlation coefficient is 0.9928, and no lead is found in refill drinking water. Calcium levels do not meet the requirements, while lead levels still meet the WHO requirements.Mineral kalsium berperan penting dalam pemeliharaan fungsi tubuh, sedangkan Timbal salah satu logam berat berbahaya. Penelitian ditujukan untuk penentuan kadar Kalsium dan Timbal dari beberapa depot air isi ulang di Medan. Kompleksometri kalsium dan SSA timbal sebagai metode penetapan kadar masing-masing. Penelitian menunjukkan kadar kalsium 10,3 – 29,3 mg/L, koefisien korelasi 0,9928, dan tidak ditemukan Timbal pada air minum isi ulang. Kadar kalsium tak memenuhi syarat, sedangkan kadar timbal masih memenuhi syarat menurut WHO