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Indonesian Journal of Chemistry and Environment

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Published by Universitas Negeri Yogyakarta

ISSN : - EISSN : 25993186 DOI : 10.21831

Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Materials Science & Nanotechnology

Articles are welcome that deal with theoretical analysis, meta-anaysis reviews, and result of research or empirical studies from all aspect of Chemistry and Environment. Reports on new methodologies and comprehensive assessments of existing ones, as well as applications to new types of problems are especially welcome. Experimental papers are expected to be brought into relation with theory, and theoretical papers should be connected to present or future experiments. Manuscripts that apply routine use or minor extensions or modifications of established and/or published experimental and theoretical methodologies are appropriate if they report novel results for an important problem of high interest and/or if they provide significant new insights.

Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)

Articles 74 Documents

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Analysis of Lead (Pb) and Cadmium (Cd) in Whitening Creams using Atomic Absorption Spectroscopy A. T. Agustina; M. P. Primadi; H. Randhanugraha; K. Khotimah; I. Luriyani
Indonesian Journal of Chemistry and Environment Vol 2, No 2 (2019): December 2019
Publisher : Universitas Negeri Yogyakarta

This research aims to determine the concentration of Lead (Pb) and Cadmium (Cd) metals contained in face whitening creams that are sold in store around Sleman, Yogyakarta. The analysis concentration of Pb and Cd levels in those whitening creams carried out using Atomic Absorption Spectrophotometer (AAS) at Chemistry laboratory of Faculty of Mathematics and Natural Sciences, Universitas Negeri Yogyakarta. We used 5 different face whitening cream samples (here after indicated by sample A, B, C, D, E) that taken randomly with the range price of thousand rupiahs. The results of analysis showed that in the sample A contains of -0.729 ppm Pb and 1,199 ppm Cd; sample B covers 0,017 ppm Pb and 1,274 ppm Cd; in the sample C consists of 1,082 ppm Pb and 1,254 ppm Cd; in the sample D contains a total of 1.242 ppm Pb and 1.215 ppm Cd; and in the sample E consists of -0.409 Pb and 1.232 ppm Cd. The results of this research are useful as the bases of their heavy metal concentrations, thus the possibilities of counterfeiting of the products ingredients can be avoided. An effort should be made in order to tell the customers about the harmful effects of over consumption of the face whitening cream with heavy metal acumulations in the body.

Sol-Gel Synthesis and Characterization of Carbon doped TiO2 based on Solanum Tuberosum Starch Diandari Siti Nur Ichsani; Cahyorini Kusumawardani
Indonesian Journal of Chemistry and Environment Vol 4, No 2 (2021): DECEMBER 2021
Publisher : Universitas Negeri Yogyakarta

The carbon-doped TiO2 have been synthesized through sol-gel method using Solanum tuberosum starch as carbon source. The carbon precursor composition and reaction time were varied to study its influence to the crystal structure and electronic structure of resulted material. The C- TiO2 product was characterized by XRD, UV-Vis DRS, FTIR, and photocatalytic activity examine by methylene blue degradation. The results showed that variations in the composition of the carbon precursor and reaction time affected the characteristics of the crystal structure and photocatalyst activity of C- TiO2. The optimum variation was found in the variation of 1.5 gram carbon composition and 24 hours hydrolysis time which had the smallest particle size and lowest bandgap energy. The highest photocatalyst activity was obtained at a 24-hour reaction time variation with 59.375% percent of methylene blue degraded in the second-order reaction with a k value of 2.1351.

Analysis of Cadmium Metal in Facial Moisturizing Cream with Atomic Absorbtion Spectrophotometry Method Hilda Ardhya; Annisa Chiyarotul Wardah; Pipit Rachmawati
Indonesian Journal of Chemistry and Environment Vol 1, No 1 (2017): December 2017
Publisher : Universitas Negeri Yogyakarta

This study aims to determine the concentration of cadmium (Cd) metal content in various facial moisturizing creams with atomic absorbtion spectrophotometry (AAS). Samples were analyzed in the form of 6 brands of facial moisturizer cream that sold in market and selected randomly. The cream samples were destructed by wet destruction method. Next, the samples of destruction result were analyzed by atomic absorbtion spectrophotometry method with wavelength about 228.8 nm to determine the concentration of cadmium. The results of this research showed that there was cadmium (Cd) metal content in the 2 samples of facial moisturizing cream that analyzed. Cadmium metal concentration on brand A is 0.1389 ± 2.7817 x 10-3 ppm and and brand B is 0.1321 ± 2.6468 x 10-3 ppm. Based on this result, the moustirizing creams are safe to use due to the BPOM regulation

The Influence of Al3+ Metal Ion in AlCl3 Compound On α- Amylase Enzyme Activity Choirul Chasanah; Das Salirawati
Indonesian Journal of Chemistry and Environment Vol 3, No 2 (2020): DECEMBER 2020
Publisher : Universitas Negeri Yogyakarta

The influence of Al3+ metal ion in AlCl3 towards α-amylase enzyme activity have been studied. The activity of the α-amylase enzyme on potato starch substrate was determined using the DNS method (3,5-dinitrosalicylic acid) at optimum conditions. The data analysis was conducted in a descriptive qualitative manner. The results obtained that α-amylase enzyme activity with potato starch substrate was optimum at 20 mg/mL with pH 7.2, incubation temperature 37˚C, incubation time 15 minutes, and enzyme concentration of 40 mg/mL with an average enzyme activity value of 0.0079 mg/mL/minute at 37˚C. However, after the addition of Al3+ metal ion, the average value of enzyme activity decreased. These means that empirically Al3+ metal ion has a tendency to be inhibitory to the α-amylase enzyme activity on potato starch substrates.

Separation of Manganese Metal Ions with Natural Zeolite Adsorbents and Activated Charcoal of Shall Water use Column Adsorption Method Batrisya Batrisya; Suyanta Suyanta
Indonesian Journal of Chemistry and Environment Vol 3, No 1 (2020): JUNE 2020
Publisher : Universitas Negeri Yogyakarta

The purpose of this study is to determine the effectiveness of natural zeolite and activated charcoal to reduce levels of manganese in shall water, determine the effect of contact time with the effectiveness of separation of manganese metal in a shallow well water and know the condition before-after the adsorption process. Method that used was column adsorption with a flow system in which sample is applied to the filtration tube containing zeolite and active carbon. The tests carried out included testing of drinking water parameters namely pH and TDS, testing of manganese content in a shallow well water using Atomic Absorption Spectrophotometer (AAS). The results showed the effectiveness value of natural zeolite adsorbent and activated charcoal using an adsorption column to reduce manganese content in a shallow well water of 90.404%. The longer the use of natural zeolite and activated charcoal, the effectiveness of reducing the manganese content in a shallow well water tends to decrease. A shallow well water samples before the adsorption process have safe conditions for pH and TDS parameters, for manganese metal parameters are also still below the appropriate threshold (SNI) number 01-0220-1987 and RI Permenkes No.492 / MENKES / PER / IV / 2010, after the process of adsorption of f a shallow well water is safe for consumption.

Adsorption of Cu(II) and Zn(II) on Liquid Waste of Electroplating Home Industry using Silica based Adsorbent Prepared from Glass Waste Y. P. Saputri; E. Priyambodo
Indonesian Journal of Chemistry and Environment Vol 2, No 1 (2019): June 2019
Publisher : Universitas Negeri Yogyakarta

This study aims to (1) knowing the optimum pH and adsorption contact time of Cu(II) and Zn(II) ions in liquid waste of electroplating by silica gel prepared from glass waste, and (2) knowing the adsorption of Cu(II) and Zn(II) ions in liquid waste of electroplating by silica from glass waste. Synthesis of silica gel using sol gel method. In this method, a powder of glass waste is reacted with sodium hydroxide solution to form sodium silicate. Hydrochloric acid solution was added into the sodiumsilicate to form silica gel. Adsorption of Cu(II) and Zn(II) metal ions was done by batch method at various pH and contact time. The experiments shows that (1) the optimum pH and the optimum contact time for Cu(II) adsorption was 7 and 3 hours, therefore the optimum pH and the optimum contact time for Zn(II) was 8 and 3 hours, (2) the adsorption effectiveness of Cu(II) and Zn(II) in liquid waste of electroplating by silica from glass waste occurred in pH 7 for 3 hours were 99.9300% and 95.4200%.

The Application of Carbon-Chitosan Composite Imprinted Cu in the Wastewater Treatment Annisa Fillaeli; Susila Kristianingrum; S. Sulistyani; Bella Fatmala; Ilham Fauzi
Indonesian Journal of Chemistry and Environment Vol 4, No 1 (2021): JUNE 2021
Publisher : Universitas Negeri Yogyakarta

This research aimed at determining the effect of chitosan in synthesizing imprinted Cu carbon-chitosan composite properties, the effect of imprinting Cu in carbon-chitosan composites to the adsorption efficiency and adsorption capacity of Cu in electroplating waste via batch methods, and the regeneration pattern of the composite. Composites were characterized using FTIR and SEM-EDX. In FTIR spectra, the addition of Cu caused the reduction of -OH and -NH functional groups intensity as the active site of Cu chemical bonding in 3448.72 cm-1. SEM-EDX analysis showed that the carbon-ionic imprinted chitosan composites after desorption contains the element of C = 60.17%, O = 38.8%, Cu = 0.83% and Na = 0.85%. The optimizations of Cu adsorption were studied from the concentration pattern of its variable, measured with Atomic Absorption Spectroscopy (AAS). The results showed that an optimum concentration for adsorption of Cu was 75 mg / L and an optimum contact time for adsorption of Cu was 24 hours with adsorption efficiency of 98.54% and adsorption capacity of 2.62 mg/g respectively. The adsorption yield of electroplating waste showed the adsorption efficiency of 31.62% and adsorption capacity of 367,79 mg/g respectively. Regeneration test was investigated from adsorption-recovery-reactivation (A-Rcov-RAct) steps. This regeneration test was carried out in three cycles. Recovery test was carried out using EDTA 0.05 M and 0.1 M HCl solutions. The efficiency of reactivation was identified from adsorption ability after activated with 0.1 M NaOH from two routes of recoveries. The results showed that recover agents do not influence the adsorption percentage, while to the recovery percentage progress, HCl 0.1M EDTA 0.05M. All routes of reactivation showed the similar results in average 99%

Antioxidant Activity Testing of Extract Kweni Peel (Mangifera odorata Griff) Yolanda Dwi Lestari; Suci Permatasari; Ade Oktasari
Indonesian Journal of Chemistry and Environment Vol 3, No 2 (2020): DECEMBER 2020
Publisher : Universitas Negeri Yogyakarta

This research aims to test the antioxidant activity of extract kweni peel (Mangifera odoratta Griff). The antioxidant testing was performed by maceration using the solvents of n-hexane and ethanol 96% after that it was fractioned using ethyl acetate solvent. The phytochemical tests yield positive results from ethyl acetate extract were flavonoids and tannins. The antioxidant testing was carried out using the DPPH method (2,2, diphenyl-1-picrylhydrazyl) based on the inhibition concentration test parameters (IC50). The result showed that the antioxidant activity (IC50) found to be 169.43 µg/mL which was classified as moderate antioxidant activity intensity. Therefore, it can be concluded that the extract of kweni peel (Mangifera odoratta Griff) has potential antioxidant activity that could be used as an inhibitor of free radicals.

Analysis of Iodine Level (KIO3) based on the Formation of Amylum-Iodine Complex using UV-Vis Spectroscopy A. Krisdiyanti; R. Adzillina; Z. A. Sani; A. A. Kumalasari
Indonesian Journal of Chemistry and Environment Vol 2, No 2 (2019): December 2019
Publisher : Universitas Negeri Yogyakarta

Iodine is an important component that needed by the body in the synthesis of thyroid hormones in order to maximize humans’ growth and development. Besides, iodine also plays a role in the regulation and metabolism system in the human body. Iodine Deficiency Disorders (IDD) is one of the nutritional problems which is an inhibiting factor in the development of human resources because it can cause disruption of mental development and human intelligence. Iodine in food is found from table salt, it found in the form of KIO3 with a standard level of iodine in table salt that is 30ppm-80ppm. This research aims to determine the iodine levels in the four kinds of table salt using spectrophotometric methods based on the formation of the starch iodine complex. The formation of the starch iodine complex performed by reacting I- with the oxidizer IO3- in an acidic atmosphere with starch indicator. The resulting blue color was analysed by visible spectrophotometry and produce absorbance data. The measured iodine content is equal to samples A, B, C, and D showing results less than 30 ppm so it can be concluded that iodine in table salt still does not meet the SNI standards that should be around 30ppm-80ppm

Analysis of Phosphorus on Prill and Liquid Fertilizer Dita Rahmawati; Khoirriah Widyasari
Indonesian Journal of Chemistry and Environment Vol 4, No 2 (2021): DECEMBER 2021
Publisher : Universitas Negeri Yogyakarta

The research was conducted on the determination of the levels of phosphorus on prill and liquid fertilizers using the UV-Visible method compared with Indonesian National Standard (SNI 02-2801-2010). Phosphorus is the most important nutrient for crop to gain the high productivity. The sample of the research were prill and liquid fertilizer that had SNI. Phosphorus levels in NPK fertilizer were analyzed using the UV-Vis spectrophotometer method. The result was an analysis of phosphorus levels in prill fertilizers of 14,67% and phosphorus levels in liquid fertilizers of 18,55%. These results are in accordance with the Indonesian National Standard (SNI) 2803:2010, which is a minimum phosphorus content of 8%.

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Cahyorini Kusumawardani

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Cahyorini Kusumawardani

Contact Email cahyorini.k@uny.ac.id

Phone +62818467905

Journal Mail Official uny.ijce@gmail.com

Editorial Address Jl Kolombo No 1 Karangmalang, Depok

Location Kab. sleman, Daerah istimewa yogyakarta INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Cahyorini Kusumawardani

Contact Email
cahyorini.k@uny.ac.id

Phone
+62818467905

Journal Mail Official
uny.ijce@gmail.com

Editorial Address
Jl Kolombo No 1 Karangmalang, Depok

Location
Kab. sleman,

Daerah istimewa yogyakarta

INDONESIA