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All Journal Jurnal technoscientia Jurnal Teknologi Seminar Nasional Teknik Kimia Kejuangan Jurnal Serambi Engineering International Journal of Community Service Learning AL-TANZIM : JURNAL MANAJEMEN PENDIDIKAN ISLAM JURNAL TEKNOLOGI TECHNOSCIENTIA CITIZEN: Jurnal Ilmiah Mulitidisiplin Indonesia Prosiding Simposium Nasional Rekayasa Aplikasi Perancangan dan Industri
Sri Sunarsih
IST AKPRIND Yogyakarta
Religion Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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Journal : JURNAL TEKNOLOGI TECHNOSCIENTIA

 1 
PENGARUH PENGASAMAN PADA SPESIASI CU(II) DALAM SISTEM ASAM HUMAT-AIR Sunarsih, Sri; Santosa, Sri Juari; -, Mudasir
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 6 No 1 Agustus 2013
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v6i1.592

Abstract

The influences of acidify and humic acid (HA) weight on Cu(II) speciation in humic acid-water system has been studied. The HA was extracted from peatsoil in Siantan, Pontianak, West Kalimantan. The Cu(II) solution was made from Cu(SO)4.s H2O crystal of E.Merck for analytical grade. The acidify effect test carried out with 50 mL of Cu(II) solution in 100 ppm concentration then varied their pH level at 4, 5 ,6, 7 and 8. To each solution added with 30 mg of HA, be interacted in 1 hour, and then settled in 24 hour to be equilibrium. The same procedure were done to prepare the solutions for determining the effect of HA weight on Cu(II) speciation. The weight of HA varied at 20, 40, 60, 80 and 120 mg with pH solution 5,0. The concentration of total Cu and hydrated Cu(II) were determined using Atomic Absorption Spectrophotometer and Ionic Selective Electrode (ISE), respectively. Based on measurement of total Cu and hydrated Cu known that if the initial pH of solution higher, the absorption of Cu to HA became higher too. The fraction that was not absorbed distributed as hydrated Cu and Cu-AH complex that their concentration was in equilibrium at pH value of 5,0. The result of pH measurement at the equilibrium, the value of Ksp Cu(OH)2 and calculation of OH- indicated that there were no deposition of Cu(OH)2 formed. The measurement also indicated that if the more weight of HA applied on the interaction, the absorption to Cu became higher. The fraction that was not adsorbed increasingly as Cu-AH complex.
PERBANDINGAN EFEKTIVITAS JERAPAN Pb DALAM PARTIKULAT OLEH POHON TANJUNG (Mimusops elengi) DAN POHON BUNGUR (Lagerstroemia) (STUDI KASUS DI JALAN TIMOHO YOGYAKARTA) Sunarsih, Sri; Suseno, Hadi Prasetyo; Fajri, Muhammad Aulia
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 14 No 1 Agustus 2021
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v14i1.3258

Abstract

The ability of plants to absorb metallic pollutants varies. The research has been conducted to compare the effectiveness of Tanjung (Mimusops elengi) and Bungur (Lagerstroemia) plants in absorbing Pb metal in particulate matter. The effect of location and leaf height on the effectiveness of pollutant uptake was also observed. Sampling was carried out in July 2020-September 2020 by taking leaves that were not too dark or light in color. Leaves taken at heights 3, 6, and 9 m on Timoho side Street. The particulate and leaf samples were digested and then analyzed their Pb levels using an Atomic Absorption Spectrophotometer (AAS). The results showed that the Tanjung plants with denser leaves captured more particulate deposits than the Bungur plants. This plant is also more effective at absorbing and accumulating Pb metal, which is indicated by the ratio of Pb metal in the leaves to Pb in particulates which is higher than the Bungur plant. These results were consistent for each sampling period, at each location and each crown height.
ANALISIS HUBUNGAN AKTIVITAS KENDARAAN BERMOTOR TERHADAP KONSENTRASI SO2 DAN NO2 DI UDARA AMBIEN (STUDI KASUS: JL. PANEMBAHAN SENOPATI YOGYAKARTA) Sri Hastutiningrum; Sri Sunarsih; Imelda -
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 11 No 1 Agustus 2018
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v11i1.121

Abstract

The aims of this study is to determine the correlation between vehicle traffic activity and the effect of sampling time on the SO2 and NO2 concentration in ambient air. The sampling location is on Jl. Senopati Yogyakarta. Sampling was carried out by an air absorbtion tool with 1.5-meter-high auxiliary from the ground. To measure SO2 using Pararosanilin method and Griess Saltzman method for NO2. The stages of this study begin with the preparation of TCM absorption solutions for SO2, Griess Saltzman absorbent solution for NO2, calibration curve manufacture, and vehicle volume calculation. Determination of concentration is done by UV-Vis spectrophotometer Thermo Scientific Genesys 20. Time sampling is divided into weekdays (Tuesday-Wednesday) and weekend (Saturday-Sunday) with sampling time on 03.00-04.00, 07.00-08.00 a.m, and 12.00-01.00, 04.00-05:00 and 07.00-08.00 p.m. The result of the study shows that the concentration of SO2 and NO2 in ambient air is not related (correlated) with vehicle activity at Jl. Senopati Yogyakarta,as well as sampling time that did not affected. The highest SO2 concentration was recorded at 232,05μg/Nm3 while the highest NO2 concentration was 17.9522 μg/Nm3. Both is not exceed of air quality standard 900μg/Nm3 and 400 μg/Nm3.
Co-Authors Abdullah, Ghufron G. Aditya Saputra Alfonsius Tripelo Fladinir Ani Purwanti Azizah, Rifka Noor Bambang Kusmartono Dewi Wahyuningtyas Dewi, Kurnia Puspa Dion Awfa Dista Pinasti Egar, Ngasbun N Fajri, Muhammad Aulia Fitria, Laili Hadi Prasetyo Suseno I Gusti Bagus Wiksuana Ikhwali, Muhammad Faisi Imami, Ahmad Daudsyah Imelda - Istiqomah Shariati Zamani Mudasir Mudasir Muklis Muklis Murni Yuniwati Novrianty, Irma Nur Novilina Arifianingsih Panjaitan, Nahesson Hotmarama Prayogo, Wisnu Purnawan Purnawan Rachmat Mulyana Septiariva, Iva Yenis Sri Hastutiningrum Sri Hastutiningrum Sri Juari Santosa Sulistyaningsih, Eka Suparni Setyowati Rahayu Suryawan, I Wayan Koko Tifani Diah Nisa Wanda Pratiwi wiwik dahani, wiwik Yuli Pratiwi