STUDI SIFAT MAGNETIK DAN UKURAN PARTIKEL ABU VULKANIK ERUPSI GUNUNG SINABUNG KABUPATEN KARO MENGGUNAKAN PROBE PASCO 2162

Salomo Salomo, Serima Apriani Purba, Riad Syech

Abstract


This study aims to determine the magnetic properties and particle size of the volcanic ash of Sinabung Mount with experiment method. Magnetic properties studied were magnetic degree, magnetic induction magnetic susceptibility, and mass susceptibility of sample. The samples used were volcanic ash taken from the west part of Sinabung, precisely at Gurukinayan village. The ash samples were taken horizontally on the slopes of the Mountain with the amount of 1.5 Kg each point with the number of 10 points (A to J). Separation of concentrate of ash was done using a Neodymium Iron Boron (NdFeB). The magnetic induction of ash and concentrate was measured using a Pasco 2162 Probe using a solenoid is 3 cm in diameter, 10 cm in length and 2000 coil turns. Magnetic induction without a core was measured as a current function (2,4,6,8,10)A and a distance of 1 to 5 mm. The total magnetic induction of ash and concentrate was measured as a current function and the particle sizes was measured using a Light Microscope. The results showed that the greate magnetic degree value at point B of 7.02% and the lowerst level of magnetism is at point J was 1.07%. The largest particle sizes is at point B and the smallest is at point J with particle size of 0.175-0.90 mm. The highest average magnetic susceptibility value for concentrate at point B is 87.32 x 10-3 and the lowest at point F is 20 x 10-3. Based on the mass susceptibility value of the concentrate obtained the volcanic ash of Mount Sinabung is at interval (46–80.000) x 10-8 m3/kg of mass susceptibility value at each location point which contains Ilmenite particles (FeTiO3).


Keywords


magnetic induction; volcanic ash; Sinabung Mount; particle size; Probe Pasco 2162

Full Text:

PDF

References


Agustine, E. dan Shilton.2015.Kajian Suseptibilitas Magnetik dan Konduktivitas Listrik pada Tanah Vulkanik yang terpapar Pestisida Organochlorin. Disertai Doktor ITB : Bandung.

Exaudi, Tri. 2017. Pembuatan dan Karakterisasi Keramik Magnesium Alumina Silika Dari Abu Vulkanik Gunung Sinabung. Jurnal Teknik Mesin (JTM): Vol. 06, No. 1, Februari 2017.

Saragih, Elsany dan kamarlin, Pinem. 2016. Identifikasi Sifat Kimia Tanah Vulkanik di Lereng Timur Pasca Erupsi Gunung Sinabung Kabupaten Karo. Jurnal Pendidikan Ilmu-ilmu Sosial 8 (10 (2016) : 1-15.

Balitbangtan, 2014.Hasil Kajian dan Identifikasi Dampak Erupsi Gunung Sinabung pada Sektor Pertanian.www.Litbang.Deptan.go.id. Diakses pada tanggal 11 September 2017.

Robock, A. 2002.Volcanic Eruption, Volume 1,The Earth system: Physical and Chemical dimensions of global environmental change, John Wiley & Soon, Ltd Chicheste, pp 738-744.

Sembiring, Mariani, dkk. 2015. Dampak Ketebalan Abu Vulkanik Erupsi Gunung Sinabung Terhadap Sifat Biologi Tanah di Kecamatan Naman Teran Kabupaten Karo, Jurnal Online Agroekoteknologi, Vol.3, No.3.1159-1163.

Aliyah, H. 2015. Karakterisasi Magnetik Sedimen Sungai Citarum Hulu dan Hubungan dengan Pencemaran Logam Berat Terhadap Lingkungan. Skripsi Sarjana ITB. Bandung: Tidak diterbitkan.

Fiantis, D., 2006. Laju Pelapukan Kimia Debu Vulkanik Gunung Talang dan Pengaruh Terhadap Proses Pembentukan Mineral Liat non Kristalin. Fakultas Pertanian/Jurusan Tanah. Universitas Andalas. Padang.


Refbacks

  • There are currently no refbacks.