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All Journal Fair Value: Jurnal Ilmiah Akuntansi dan Keuangan Makara Journal of Science
Febriyanti, Sita
Unknown Affiliation
Economics, Econometrics & Finance

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A Simple and Safe Spectrophotometric Method for Iodide Determination Sulistyarti, Hermin; Atikah,; Fardiyah, Qonitah; Febriyanti, Sita; Asdauna,
Makara Journal of Science Vol. 19, No. 2
Publisher : UI Scholars Hub

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Abstract

In order to practice green chemistry, a simple and safe spectrophotometric method for iodide determination has been successfully developed based on the formation of a blue starch-iodine complex. Iodide was oxidized to form iodine prior to the addition of a starch solution, and the blue starch-iodine complex was directly detected spectrophoto-metrically at a wavelength of 615 nm. The chemical parameters, such as type, reaction time, as well as concentration of oxidizing agents and solution pH were optimized with respect to sensitivity and analysis time. The method showed optimum results under iodate oxidant with a mol ratio of IO3-:I- =1:3, reaction time of 5 minutes, and solution pH of 5. Under these optimum conditions, the method showed linierity measurements from 5-40 mg/L iodide with a correlation (R2) of 0.9889. This technique offers a simple, safe, accurate, and relatively fast method for iodide determination, which is prospective for monitoring iodide samples.
Faktor-faktor yang mempengaruhi pertumbuhan laba pada Bank Umum Konvensional yang terdaftar di BEI periode tahun 2018-2020 Febriyanti, Sita; Aini, Nur
Fair Value: Jurnal Ilmiah Akuntansi dan Keuangan Vol. 5 No. 2 (2022): Fair Value: Jurnal Ilmiah Akuntansi dan Keuangan
Publisher : Departement Of Accounting, Indonesian Cooperative Institute, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (435.958 KB) | DOI: 10.32670/fairvalue.v5i2.2340

Abstract

Profit growth is a ratio used to see a business enterprise’s  capability to increase income in comparison to the previous period. This study targets to examine the elements that affect profit growth in conventional business banks indexed on the IDX for the length 2018-2020. The populace on this examine are conventional business banks indexed at the IDX for the duration 2018-2020, obtained a population of 45 conventional business banks indexed at the IDX. This examine uses secondary facts inside the form of numbers that are processed right into a statistical measurement scale, so it’s called secondary facts. The analytical method used on this studies is statistics analysis the use of multiple linear regression test. The consequences of this look at suggest that CAR has a positive impact on bank income growth, BOPO has a negative impact on bank income growth, at the same time as NPL and LDR have no impact on income growth of conventional business banks indexed on the IDX for the 2018-2020 period.
Co-Authors Asdauna, Atikah, Hermin Sulistyarti Nur Aini Qonitah Fardiyah