Pengaruh Waktu terhadap Kadar Logam Mangan (Mn) Pada Air Tanah dengan Metode Spektrofotometri Serapan Atom di Laboratorium Dinas Energi Sumber Daya Mineral

Abstract

Experiments have been carried out pn groundwater by calculating the manganese content with variations in time everry day in 1 month with the same sample using the Atomic Absorption Spectrophotometry method. From the results of research, the levels of manganese (Mn) in the first week obtained is 3.9077 ppm;3.9009 ppm;3.8942 ppm;3.8879 ppm;and 3.8779 ppm. In week II obtained 3.7077 ppm; 3.7009 ppm; 3.6942 ppm; 3.6879 ppm; and 3.5779 ppm. In week III obtained 3.5079 ppm; 3,5007 ppm; 3.4942 ppm; 3.4879 ppm; and 3.4569 ppm. In week IV obtained 3.4057 ppm; 3.3899 ppm; 3.3742ppm; 3.3679 ppm; and 3.3009 ppm. From the results obtained, it can be concluded that time affects the levels of manganese (Mn) in ground water with the result that the levels of Manganese (Mn) are decreasing every day and it can be concluded that the levels of manganese (Mn) in groundwater in the silver area do not meet the PERMENKES requirements. No. 32 of 2017 concerning Water Quality with levels of manganese (Mn) < 0.5 ppm

Telah dilakukan percobaan terhadap air tanah dengan menghitung kadar logam Mangan dengan variasi waktu setiap hari dalam 1 bulan dengan sampel yang sama dengan metode Spektrofotometri Serapan Atom. Dari hasil penelitian diproleh kadar logam Mangan (Mn) pada minggu I diproleh yaitu 3,9077 ppm; 3,9009 ppm; 3,8942 ppm; 3,8879 ppm; dan 3,8779 ppm. Pada minggu II diproleh 3,7077 ppm; 3,7009 ppm; 3,6942 ppm; 3,6879 ppm; dan 3,5779 ppm. Pada minggu III diproleh 3,5079 ppm; 3,5007 ppm; 3,4942 ppm; 3,4879 ppm; dan 3,4569 ppm. Pada minggu IV diproleh 3,4057 ppm; 3,3899 ppm; 3,3742ppm; 3,3679 ppm; dan 3,3009 ppm. Dari hasil yang diproleh dapat disimpulkan waktu mempengaruhi kadar logam mangan (Mn) pada air tanah dengan hasil kadar logam Mangan (Mn) yang berkurang setiap hari nya dan dapat disimpulkan bahwa kadar logam mangan (Mn) pada air tanah daerah hamparan perak tidak memenuhi persyaratan PERMENKES No. 32 Tahun 2017 Tentang Kualitas Air dengan kadar logam mangan (Mn) < 0,5 ppm.