Items where Author is "Marpaung, Harlem"

Simatupang, Lisnawaty and Situmorang, Manihar and Marpaung, Harlem and Siburian, Rikson (2020) Fabrication of silica-based chitosan biocomposite material from volcanic ash and shrimp husk by sol gel method for adsorbent of cadmium (II) Ions. Indian Journal of Chemical Technology (IJCT), 27 (05). pp. 387-394. ISSN 0971–457X (p) ; 0975-0991 (e)

Simatupang, Lisnawaty and Siburian, Rikson and Sitanggang, Parna and Doloksaribu, Maryati Evivani and Situmorang, Manihar and Marpaung, Harlem (2018) SYNTHESIS AND APPLICATION OF SILICA GEL BASED ON MOUNT SINABUNG FLY ASH FOR Cd(II) REMOVAL WITH FIXED BED COLUMN. RASĀYAN Journal of Chemistry [RJC], 11 (02). pp. 819-827. ISSN 0976-0083

Simatupang, Lisnawaty and Sitanggang, Parna and Doloksaribu, Maryati Evivani and Siburian, Rikson and Situmorang, Manihar and Marpaung, Harlem (2017) SYNTHESIS AND ADSORBENT APPLICATION BASED ON SILICA FROM VULCANIC ASH SINABUNG FOR HEAVY METAL ADSORPTION ON Cd (II). In: The 4th Annual International Seminar on Trends in Science and Science Education 2017, 14 Nov 2017, Medan.

Nadapdap, Martina and Marpaung, Harlem and Gultom, Jamahir (2016) STUDI PENGARUH PENAMBAHAN ZEOLIT TERHADAP KONSENTRASI FOSFAT TERSEDIA DI DALAM TANAH. In: Seminar Nasional Kimia dan Pendidikan Kimia 2016, 30-31 May 2016, Medan.

Dalimunthe, Nur Asyiah and Alfian, Zul and Wirjosentono, Basuki and Marpaung, Harlem (2016) STUDI PERBANDINGAN PELARUT PADA PROSES SONIKASI UNTUK ANALISIS KADAR METAMFETAMIN DALAM RAMBUT PENGGUNA SABU-SABU. In: Seminar Nasional Kimia dan Pendidikan Kimia 2016, 30-31 May 2016, Medan.

Taufik, Muhammad and Marpaung, Harlem and Kaban, Jamaran and Wirjosentono, Basuki (2016) VALIDASI METODE ANALISIS CANNABINOL DARI SAMPEL RAMBUT MENGGUNAKAN TEKNIK Gcms. In: Seminar Nasional Kimia dan Pendidikan Kimia 2016, 30-31 May 2016, Medan.