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Akademický článek

The Adsorption Isotherm and Kinetics Studies of Cu(II) and Cr(III) Metal Ions from Aqueous Solutions on Activated Biosorbent of Coffee Pulp Waste

Autor: I Made Siaka, I Wayan Sudiarta, Emmy Sahara, I Dewa Ketut Sastrawidana, Siti Maryam

Publikováno v: Ecological Engineering & Environmental Technology, Vol 25, Iss 11, Pp 190-199 (2024)

Heavy metals such as copper and chromium are toxic even trace levels in contaminated water can be harmful to humans. Heavy metals removal from wastewater using low cost technology, resulting in high efficiency and being environmentally friendly, is s

Externí odkaz: https://doaj.org/article/af3c3344c61e4c6dbeb94866607a22c9

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Akademický článek

Differential Pulse Voltammetry Technique Using Ferrocene-Modified Carbon Paste Electrodes for Determination of Pb(II) In Kepok Banana

Autor: Irdhawati Irdhawati, Feby Silvia, Emmy Sahara, Nur Alisyah Gani

Publikováno v: Jurnal Kimia Valensi, Vol 6, Iss 2, Pp 185-191 (2021)

The voltammetry method is a field of electrochemistry that measures electric current at a certain potential, which can be used to determine the concentration of inorganic and organic compounds that can be oxidized or reduced. In this research, the di

Externí odkaz: https://doaj.org/article/40e343d73c35456f9f4c0d030dbb9468

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Akademický článek

Activated Bentonite Modified-Carbon Paste Electrode for Determination The Level of Copper Ion (Cu2+) in Tomato

Autor: Irdhawati Irdhawati, Ekki Inur Ingtyas Mawarni, Ayu Jyostosya Yotirani Arya Wijana, Feby Silvia Sitio, Ni Putu Gita Widi Saraswati, Emmy Sahara

Publikováno v: Aceh International Journal of Science and Technology, Vol 9, Iss 3, Pp 177-186 (2020)

Voltammetry is an electroanalytical method measure current as a function of applied potential. The working electrode in the voltammetry method dramatically affects the result of the electrochemical analysis. Modification of the working electrode can

Externí odkaz: https://doaj.org/article/29f8d05d4f1643019c7066c547b87c0e

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Akademický článek

Teknik Voltammetri Pelucutan Anodik Menggunakan Elektroda Glassi Karbon dalam Penentuan Kadar Logam Fe dalam Terong Ungu

Autor: Irdhawati Irdhawati, Vivi Eka Indrayani, Emmy Sahara

Publikováno v: Jurnal Kimia Riset, Vol 4, Iss 2, Pp 111-120 (2019)

Terong ungu adalah salah satu jenis tanaman yang banyak dibudidayakan. Tingginya permintaan terong menyebabkan petani menggunakan pupuk dan pestisida dari bahan kimia untuk meningkatkan produksi. Penggunaan bahan kimia yang berlebihan dapat mencemari

Externí odkaz: https://doaj.org/article/c8c5cda5003542548e0e371f71d93ed8

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Akademický článek

Voltametri Pelucutan Anodik Menggunakan Elektroda Pasta Karbon Termodifikasi Bentonit untuk Penentuan Kadar Ion Cd(II) dalam Sayur Sawi Putih

Autor: Irdhawati Irdhawati, Ni Kadak Nevi Titasia, Emmy Sahara

Publikováno v: Jurnal Riset Kimia, Vol 12, Iss 2 (2021)

In this study, the measurement of Cd(II) ion by anodic stripping voltammetry technique was conducted using bentonite modified carbon paste as working electrode (CPE-B). The performance of CPE-B was compared with carbon paste electrode without bentoni

Externí odkaz: https://doaj.org/article/5713da682f044e68a819df879ddc3554

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Akademický článek

Serbuk Gergaji Kayu Jati Teraktivasi EDTA Sebagai Penjerap Ion Tembaga (II) dan Krom (III)

Autor: Irdhawati Irdhawati, Ni Nyoman Triyunita Sinthadevi, Emmy Sahara

Publikováno v: Indonesian Journal of Chemical Research, Vol 7, Iss 2 (2020)

Teak sawdust is a waste of the furniture industry. The main compound content is cellulose, which contains hydroxyl groups so that can be used as adsorbent. This work aims to determine adsorption capacity and isotherm adsorption pattern of teak sawdus

Externí odkaz: https://doaj.org/article/8e8743de7d054c2e8d84a9c0fbd8a937

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Akademický článek

Analisis Logam Fe dengan Teknik Voltammetri Pelucutan Anodik Pulsa Diferensial dalam Tanaman Pakcoy dari Perkebunan Sayur Bedugul Bali

Autor: Irdhawati Irdhawati, Rosanti Suryani Tince Mbatu, Emmy Sahara

Publikováno v: Jurnal Kimia Valensi, Vol 4, Iss 2, Pp 168-173 (2018)

Pakcoy is one of the most popular vegetable. The use of synthetic fertilizers and pesticides contain heavy metals can contaminate pakcoy vegetable. This research aims to determine the validity of measurements and concentration of Fe in pakcoy using d

Externí odkaz: https://doaj.org/article/31fe72c0ccf64b47b72914028ef7a0dc

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Differential Pulse Voltammetry Technique Using Ferrocene-Modified Carbon Paste Electrodes for Determination of Pb(II) In Kepok Banana

Autor: Nur Alisyah Gani, Emmy Sahara, Feby Silvia, Irdhawati Irdhawati

Publikováno v: Jurnal Kimia Valensi, Vol 6, Iss 2, Pp 185-191 (2021)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::65f948d595e21fd78a8608c330fb8d39
http://journal.uinjkt.ac.id/index.php/valensi/article/view/16610

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