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All Journal Jurnal Zarah Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences
Friska Silitonga
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Religion Arts Humanities Chemistry Economics, Econometrics & Finance Education Social Sciences

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Analysis of Benefits of the Irrigation Water Use Improvement Acceleration Program (P3-Tgai) on Improvement of Irrigation Network Infrastructure to the Regional Development at Hutagurgur Village, Regency of the Humbang Hasundutan Friska Silitonga; Zulkifli Nasution; Agus Purwoko
Budapest International Research and Critics Institute (BIRCI-Journal): Humanities and Social Sciences Vol 4, No 3 (2021): Budapest International Research and Critics Institute August
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birci.v4i3.2516

Abstract

The research objective is to analyze the benefits of The Irrigation Water Use Improvement Acceleration Program to improve irrigation network infrastructure, increase functional land area and increase rice productivity and increase community income for regional development in Hutagurgur Village. The location of the study was carried out in Hutagurgur Village with a sample of all P3A Gurgur Indah members as recipients of the program. Research using descriptive methods with a quantitative approach. The results showed that the Irrigation Water Use Acceleration Improvement Program had a positive effect on improving irrigation infrastructure. Evidenced by the SPSS 23 program by increasing the length of the irrigation network significantly influence the increase in the area of functional land area of 8.25 Ha. The increase in functional land has a positive effect on increasing the productivity of paddy fields, which is significantly increased by 498.45 Kg/Ha/MT and in line with the average income of farmers which increased significantly by Rp.5,172,193.42Ha/MT. 
PENENTUAN LOGAM Pb PADA AIR LAUT BEKAS TAMBANG BAUKSIT MENGGUNAKAN METODE VOLTAMETRI STRIPPING ADSORPTIF-CALCONCARBOXYLIC ACID Hilfi Pardi; Friska Silitonga; Dina Fitriyah; Eka Ramdhani
Jurnal Zarah Vol. 10 No. 2 (2022): Jurnal Zarah
Publisher : Prodi Pendidikan Kimia, FKIP, Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/zarah.v10i2.4924

Abstract

Metode elektroanalitik sederhana dan sensitif dikembangkan untuk penentuan timbal dengan metoda voltametri stripping adsorptif (VSAD) dengan adanya Calconcarboxylic Acid (CCA). Kompleks Pb-CCA terakumulasi pada permukaan elektroda drop merkuri gantung (HMDE) dan arus puncak diukur dengan metoda VSAD. Kompleks berkurang pada -0,46 V dan arus puncak meningkat ketika konsentrasi rendah CCA ditambahkan ke larutan sampel. Variabel eksperimen pH, konsentrasi CCA; waktu akumulasi (tacc); potensial akumulasi (Eacc), serta potensi gangguan, diselidiki. Di bawah kondisi yang dioptimalkan (pH 3,4; CCA: 0,6 mol/L; tacc: 60 detik; Eacc: 0,35 V; konsentrasi buffer 40 mmol), arus puncak sebanding dengan konsentrasi Pb(II) selama 0,05–100 µg/L, dengan batas deteksi 0,01 µg/L. Simpangan baku relatif untuk larutan yang mengandung 10,0 µg/L larutan Pb(II) adalah 0,5% untuk sepuluh pengujian berturut-turut. Metode ini divalidasi dengan menentukan Pb(II) dalam air laut bekas tambang bauksit yang dibandingkan dengan metoda Spektrofotometri Serapan Atom (AAS). Akhirnya, metode VSAD berhasil diterapkan pada penentuan Pb(II) dalam air laut bekas tambang bauksit.
Co-Authors Agus Purwoko Dina Fitriyah Eka Ramdhani Hilfi Pardi Zulkifli Nasution