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Journal : Journal of Tropical Soils

Changes of Soil Chemistry Characteristics of Tephra Mount Anak Krakatau-Indonesia, Through Leaching Experiment Setiawati, Astriana Rahmi; Lumbanraja, Jamalam; Kurnia, Ananda Ika; Hidayat, Manarul; Aini, Septi Nurul; Prasetyo, Dedy
JOURNAL OF TROPICAL SOILS Vol. 28 No. 2: May 2023
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2023.v28i2.57-70

Abstract

Studying the weathering process in pristine volcanic materials is crucial as this process will determine further soil characteristics. Mount Anak Krakatau is reported as one of the fastest-growing volcanoes. This volcano erupted powerfully in December 2018, ejecting tons of volcanic materials. These materials are considered pristine and unweathered tephra. Hence, a leaching experiment can be one of the crucial methods to predict further soil characteristics formed as climatic factors. Tephra sampling was conducted on 13 Augustus 2019 or eight months after the massive eruption of Mount Anak Krakatau in December 2018. Tephra samples were leached by deionized water (H2O), oxalic acid (H2C2O4) 0.02 M, and citric acid (C6H8O7) 0.02 M (solvents) for 90 days. pH of tephra increased approximately from  (3.95– 4.99 ) to (5.12–8.11). Organic-C rose about 0.2 to 1 point higher than organic-C of tephra before the leaching experiment. The increasing value of organic-C was predicted to increase CEC (Cation Exchange Capacity) (2.13–5.36 cmolc kg-1). After the leaching experiment, the tephra’s surface was weathered clearly as an impact of solvents and the growing of algae.
Co-Authors Adi Utama Ahmad Faqih Ahmad Habibullah Aini, Septi Nurul Alfianti, Fifi Nur Almuntaqo Zainuddin Andrew Sinaga, Frans Andriani, Nanu Anggraini, Vella Dwi Arfian, Arfian Arief Wibowo Armeita, Ade Azhar, Satrio Waliyudin Azzahra, Salsabila Putri Bambang Rudiansah Cahyadi Dedy Prasetyo Dermawan, Alif Fito Diputra, Angga Anugra Efrianto, Gatot Estiawan, Belva Yulivio Fauzi, Ujang Anwar Febriliyanti, Nurul Hafidzi, Muhammad Kamil Handayani, Erfin Dwi Fitria Heru Irianto Hidayatullah, Akmal Hilma, Dede Hilmy Ibrahim, Farras I'tisham, M. Rayhan Ida Gunawati, Amalia Ilyas, Doni Jamalam Lumbanraja Karsinah, Iin Kartika Dewi, Mutiara Kuncara, Ramadhan Bima Kurnia Priambodo, Tio Kurnia, Ananda Ika Kurniali, M. Haidar Fikri Kuswanto, Andi Diah Maarif, Miftah Nurul Malau, Aulia Rohman Muh. Isna Nurdin Wibisana Mukti, Ajeng Tanjiah Setia Nada, Ahmad Ningrum, Devita Cahya Novianti, Alvin Dwi Nugraha, Rangga Setya Nurahim, Yudi Nurcahyani, Lala Intan Nurfath, Al Fachri Nurjamiludin, Irwan Nurlina, Ade Nurmalasari, Neneng Oktavia, Nova Prastiwi , Bertika Kusuma Puspita, Gita Putri, Mirza Agustin Rahma R, Jamiludin Rachman, M. Erika Rachmat Pramukty Rafika, Muhana Ramadani, Achmes Dade Ramadhanty, Denisa Ramdani, Usep Purkon Rasmanah, Cici Riandini, Anyeu Rokhmah, Akhirul Insan Nur Rudiansyah, Bambang Safaat, Birkham Pahmi Sahira, Gigih Yulia Salsabila, Annisa Septi Rahayu Setiawati, Astriana Rahmi Siti Hadiyati Nur Hafida Sitorus, Betris Kristin Sosor Ambar Wati Sulistia, Desi Sri Sumanto, Sumanto Sutrisno, Sutrisno Syihab, Firiyal Luthfi Tati Suprapti Toyibah, Euis Hayun Utami, Dita Rosa Vera Rimbawani Sushanty Wahyudianto, Raafi Catur Wandy, Yusef Wardani, Vifi Ayu Wardhana, Fajar Wira Warhana, Fajar Wira Wibowo, Daffa Satrio Yahya, Ananda Intan Fadhilah Yayat Hidayat Yudiantari, Amalia Luthfi Yuniandari, Kartika Yusuf, Fauzi Maulana