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All Journal EKSAKTA: Journal of Sciences and Data Analysis Alchemy : Journal of Chemistry Prosiding Pendidikan Sains Jurnal Kimia dan Kemasan agriTECH IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Jurnal Kimia Terapan Indonesia Indonesian Journal of Chemistry Molekul: Jurnal Ilmiah Kimia Molluca Journal of Chemistry Education (MJoCE) Jurnal Kimia dan Kemasan Jurnal Ilmiah Berkala: Sains dan Terapan Kimia Jurnal Natural Jurnal Manusia dan Lingkungan Molekul: Jurnal Ilmiah Kimia JURNAL REKAYASA KIMIA & LINGKUNGAN

Nurul Hidayat Aprilita

Department Of Chemistry, Faculty Of Mathematics And Natural Sciences, Universitas Gadjah Mada Sekip Utara, Yogyakarta 55281

Author-ID : 3959493

Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Energy Engineering Environmental Science Immunology & microbiology Materials Science & Nanotechnology Neuroscience Physics Social Sciences

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VALIDASI METODE ANALISIS POLISIKLIK AROMATIK HIDROKARBON (PAH) DALAM SEDIMEN DI SEKITAR PANTAI MAKASSAR Muhammad Syahrir; Nurul Hidayat Aprilita; Nuryono Nuryono
Jurnal Kimia Terapan Indonesia Vol 17, No 1 (2015)
Publisher : Research Center for Chemistry - LIPI

Validation ofÂ analysisÂ method of PAH have been done in marine sediment of Macassar Coast by Gas Chromatography (GC-FID). Validation of method include:Â limit of detection (LoD), limit of quantification (LoQ) and linearity range. The results of validation method of 7 types PAHs (Naphtalene, Acenaphtene, Penanthrene, Fluoranthene, Pyrene, Benzo (a) Anthracene and perylene) giveÂ aÂ linearityÂ range between 0.5 to 20 ppm with an average linearity approaches a value of 1. LoD forÂ Naphtalene; Acenaphthene; Penanthrene; Fluoranthene; Pyrene; Benzo (a) Anthracene; and Perylene areÂ 3.541; 0.208; 1,736; 1.737; 1,738; 12.124; and 2,128 ppm, respectively. LoQ for Naphtalene; Acenaphthene; Penanthrene; Fluoranthene; Pyrene; Benzo (a) Anthracene; and Perylene areÂ 11,803; 0.695; 5.786; 5.786; 5.788; 5.794; 7.0796 and 7.092 ppm, respectively. Limit of detection (LoD), limit of quantification (LoQ), linearity and linear range can be used to determine the concentration of PAH in sediment samples.Keywords: Validation Method, Concentration, PAH, Sediments

EXTENDING THE LIFE TIME OF POLYMER INCLUSION MEMBRANE CONTAINING COPOLY(EUGENOL-DVB) AS CARRIER FOR PHENOL TRANSPORT Agung Abadi Kiswandono; Dwi Siswanta; Nurul Hidayat Aprilita; Sri Juari Santosa; Takashi Hayashita
Indonesian Journal of Chemistry Vol 13, No 3 (2013)
Publisher : Universitas Gadjah Mada

A study of phenol transport was conducted in correlation to the evaluation of copoly(eugenol-divinylbenzene, DVB) as carrier using polymer inclusion membrane (PIM) method. The performance of copoly(eugenol-DVB) was observed based on the parameters of Membrane Liquid (ML) loss. Some variations, including the effect of plasticizer concentration, stirring speed, and measurement of lifetime of the membrane, were studied. Related to the lifetime, the effect of the concentration of NaNO3 salt was also studied. The tensile strength of membrane before and after the transport was measured and their morphology was characterized using SEM (Scanning Electron Microscope). Results of the study indicate that the value of the tensile strength of the membrane after the transport was lower than that before the transport. The lifetime of the membrane was not only depending on the capacity of the membrane in restraining ML loss, but also on the concentration of salt that was added to the solution of source phase. In addition, the lifetime of the membrane had correlation to the number of ML loss, i.e. the addition of salt lead to lower amount of ML loss and gave longer lifetime. With the addition of 0.1 M NaNO3, the lifetime of the membrane extended to 62 days, which is longer than the lifetime without the addition of NaO3 which was only 7 days.

TRANSPORT OF PHENOL THROUGH INCLUSION POLYMER MEMBRANE (PIM) USING COPOLY(EUGENOL-DVB) AS MEMBRANE CARRIERS Agung Abadi Kiswandono; Dwi Siswanta; Nurul Hidayat Aprilita; Sri Juari Santosa
Indonesian Journal of Chemistry Vol 12, No 2 (2012)
Publisher : Universitas Gadjah Mada

Copoly(eugenol-DVB) with DVB composition of 2%, 6% and 12% had been prepared and characterized by FTIR spectroscopy. The copolymers were used as membrane carriers for the transport of phenol using the polymer inclusion membranes (PIM) based on polyvinylchloride (PVC) as membrane support. The experimental conditions for investigation of the transport of phenol through the membranes were pH of the source phase, NaOH concentration in the stripping phase, membrane thickness, phenol concentration and transport time. The results showed that the optimum condition for phenol transport was achieved on the membrane based on copoly(eugenol-DVB) 12% with the transport efficiency of 75.6% at pH of the source phase of 4.5, NaOH concentration of 0.25 M and transport time of 48 h. The reaction follows first order kinetics with mass transfer coefficient (k) of 1.02×10-5 m/s and permeability (Ps) of 8.5×10-6 m/s.

IMMOBILIZATION OF Saccharomycess cereviceae BIOMASS ON CHITOSAN AND ITS APPLICATION AS AN ADSORBENT FOR Pb(II) ION Hasri Hasri; Mudasir Mudasir; Nurul Hidayat Aprilita; Roto Roto
Indonesian Journal of Chemistry Vol 11, No 2 (2011)
Publisher : Universitas Gadjah Mada

An application of Saccharomycess cereviceae biomass immobilized on chitosan (SC-Chi adsorbent) for Pb(II) ion removal was demonstrated. Adsorption experiment was conducted at various mass ratio of Saccharomycess cereviceae biomass to chitosan, contact time, pH of solution and concentration of cation. Total Pb(II) metal ion adsorbed was calculated from the difference of the amount of metal ion before and after adsorption which was measured by AAS. The results showed that optimum condition for adsorption of Pb(II) ion by the SC-Chi was achieved using mass ratio of Saccharomycess cereviceae to chitosan of 50% (w/w), pH solution of 7, contact time of 60 min and concentration of 25 mgL-1. The hydroxyl (-OH) and amino (-NH2) functional groups are believed to be responsible for the adsorption of Pb(II) ion by the adsorbent.

SELF-CLEANING GLASS BASED ON ACID-TREATED TiO2 FILMS WITH PALMITIC ACID AS MODEL POLLUTANT Nurul Hidayat Aprilita; Indriana Kartini; Sofy Herawati Ratnaningtyas
Indonesian Journal of Chemistry Vol 8, No 2 (2008)
Publisher : Universitas Gadjah Mada

Preparation and characterization of self-cleaning glass based on acid-treated TiO2 films as well as evaluation on their self-cleaning properties have been carried out. Palmitic acid photodegradation was used as model pollutant. Acid-treated TiO2 powders were deposited on glass surface by using spraying technique. The XRD results showed that acid-treated TiO2 film exhibited decreased anatase crystalline size. The corresponding SEM images showed porous surface morphology. Layer densification was observed as the film thickness increased. TiO2 photocatalytic activity increased as the length of UV radiation increased. Best results were obtained at experimental condition of 35 hours UV radiation time. It is also observed that the thickness of TiO2 layers influenced the efficiency of palmitic acid photodegradation. The film with 1.661 µm thick TiO2 layers and 6.933 mg weight (0.7164 mg/cm2) could degrade 97.54 % mg palmitic acid/cm2 thin film.

MONOLITHIC DISK FOR THE FAST CHROMATOGRAPHIC SEPARATION Nurul Hidayat Aprilita; Rania Bakry; Christian W Huck; Guenther K Bonn
Indonesian Journal of Chemistry Vol 5, No 2 (2005)
Publisher : Universitas Gadjah Mada

Poly(styrene/divinylbenzene) (PS/DVB) monolithic disk was prepared by in situ free-radical copolymerization of styrene and divinylbenzene in the presence of decanol and tetrahydrofuran as porogens. PS/DVB monolithic disks were produced in two different lengths 1.5 mm and 3 mm. The disks were used in reversed phase chromatography of proteins with 0.2 % trifuoroacetic acid (TFA) and 0.2 % TFA in acetonitrile as mobile phase A and B, respectively. The effect of gradient rate, flow rate, temperature and disk length on the separation of proteins were also studied. PS/DVB monolithic disks allow the rapid separation of proteins in reversed phase chromatography.

POLY(GLYCIDYL METHACRYLATE-DIVINYLBENZENE) MONOLITHIC CAPILLARY AS A STATIONARY PHASE FOR THE REVERSED-PHASE CHROMATOGRAPHIC SEPARATION OF PROTEINS Nurul Hidayat Aprilita; Rania Bakry; Christian W Huck; Guenther K Bonn
Indonesian Journal of Chemistry Vol 5, No 1 (2005)
Publisher : Universitas Gadjah Mada

Capillary column with monolithic stationary phase was prepared from silanized fused-silica capillary of 200 µm I.D. by in situ free radical polymerization of divinylbenzene with glycidy methacrylate in the presence of decanol and tetrahydrofuran as porogens. The hydrodynamic and chromatographic properties of this monolith, such as backpressure at different flow-rate, pore size distribution, van Deemter plot and the effect of varying gradient-rate were investigated. Poly(glycidyl methacrylate-divinylbenzene) monolithic capillary has been used successfully for the reversed-phase chromatographic separation of proteins.

Investigation on the Effect of Addition of Fe3+ Ion into the Colloidal AgNPs in PVA Solution and Understanding Its Reaction Mechanism Roto Roto; Marcelina Marcelina; Nurul Hidayat Aprilita; Mudasir Mudasir; Taufik Abdillah Natsir; Bella Mellisani
Indonesian Journal of Chemistry Vol 17, No 3 (2017)
Publisher : Universitas Gadjah Mada

Analysis of Fe3+ ion present in aqueous solutions is always of interests. Recently, this ion has been analyzed by colorimetric methods using colloid of silver nanoparticles (AgNPs) in capping agents of polymers. The reaction mechanism between AgNPs and Fe3+ is still subject to the further investigation. In this work, 1,10-phenanthroline was used to probe the reaction mechanism between AgNPs and Fe3+ ion in the solution. The colloids of AgNPs were prepared in the polyvinyl alcohol (PVA) solution and reacted with Fe3+. The colloid surface plasmon absorbance decreases linearly along with the increase in Fe3+ concentration. The addition of 1,10-phenanthroline to mixture changes the solution to red, indicating that the reaction produces Fe2+. This suggests that the reduction of the AgNPs absorbance is the result of oxidation of the Ag nanoparticles along with the reduction of Fe3+.

Modified Silica Adsorbent from Volcanic Ash for Cr(VI) Anionic Removal Endang Tri Wahyuni; Roto Roto; Firda Ainun Nissa; Mudasir Mudasir; Nurul Hidayat Aprilita
Indonesian Journal of Chemistry Vol 18, No 3 (2018)
Publisher : Universitas Gadjah Mada

In the present research, cetyltrymethyl ammonium bromide (CTAB)-modified silica from Kelud’s volcanic ash has been prepared and examined as adsorbent for removal of the hazardous Cr(VI) anion. The research was initiated with purification of SiO2 from the volcanic ash that was carried out by reacting the volcanic ash with NaOH powder at 900 °C for 2 h, followed by dissolving the ash to water at 100 °C, and then was acidified with HCl 1 M to form hydrogel. By calcination of the hydrogel, silica (SiO2) gel was obtained. The next step was modification of the silica with CTAB, that was performed by interacting the CTAB solution with the gel, in which the concentration of the CTAB was varied. Then the CTAB-modified silica samples were characterized by using FTIR, XRD, and SEM machines. The activity of the adsorbent was examined for adsorption of CrO4= in the solution. The results of the research demonstrate that the amorphous silica gel and the amorphous CTAB-modified silica have been obtained. The CTAB-modified silica was found to possess much higher ability in the adsorption of CrO4= anion, that was 48.90 mg/g, compared to that of the unmodified silica gel, as much 5.68 mg/g. These findings strongly prove that the negative surface of the CTAB-modified silica adsorbent has been successfully formed. Furthermore, it is also observed that increasing concentration of CTAB in SiO2-CTA can promote more effective adsorption of the CrO4= from the solution, but the further enlargement of the CTAB concentration leads to the adsorption decreased, and the highest adsorption was shown by CTAB-modified silica prepared with 0.10 mole of CTAB/1 mole SiO2.

Effect of Reducing Agents on Physical and Chemical Properties of Silver Nanoparticles Roto Roto; Hani Prima Rasydta; Adhitasari Suratman; Nurul Hidayat Aprilita
Indonesian Journal of Chemistry Vol 18, No 4 (2018)
Publisher : Universitas Gadjah Mada

Silver nanoparticles having uniform size and shape, a diameter range of 10–50 nm, excellent stability, and high zeta potential are always desirable for many applications. The silver nanoparticles were synthesized by chemical reduction method using some reducing agents in a polyvinyl alcohol solution. This study aims at determining the effect of reducing agents on the chemical and physical properties of silver nanoparticles. Ascorbic acid, sodium borohydride, hydrazine, sodium citrate, and glucose were used as reducing agents. Surface Plasmon Resonance (SPR) absorbance, morphology, zeta potential, crystal system, and stability of the products were studied. The results showed that the chemical and physical properties of the colloidal Ag nanoparticles were dependent on the reducing agents. In general, the produced silver nanoparticles have an fcc crystal system with a unit cell of 4.0906–4.0992 Å. The SPR absorbance of the colloids has the peak in the range of 401–433 nm. We found that the colloid of silver nanoparticles prepared by using ascorbic acid has uniform spherical shape, the diameter of about 20 nm, and zeta potential of -10.4 mV. After being stored for one month, the SPR absorbance of the colloid decreased by only 5%. This type of colloidal Ag nanoparticles prepared by using ascorbic acid is expected to be used for chemical sensors, an antibacterial agent, and so on.

Co-Authors Adhitasari Suratman Agung Abadi Kiswandono Ahmad Nasir Pulungan An Nissa F. Hayu An Nissa F. Hayu, An Nissa F. Arifina Febriasari Bambang Rusdiarso Bambang Sutriyanto Bella Mellisani Beti Wulandari Candra Purnawan Christian W Huck Christian W Huck Dhian Nuri Bawani Dwi Siswanta Dwi Siswanta Dwi Siswanta Dwi Siswanta Eko Sri Kunarti Eko Suguharto Endang Tri Wahyuni Endang Tri Wahyuni Endang Tri Wahyuni Endang Tri Wahyuni Endang Tri Wahyuni Febriasari, Arifina Firda Ainun Nissa Fitrilia Silvianti Girsang, Ermi Guenther K Bonn Guenther K Bonn Hani Prima Rasydta Hasri Hasri Indriana Kartini Indriana Kartini Indriana Kartini Indriana Kartini Indriana Kartini Isna Nurhidayati Juniva Laila Sihombing, Juniva Laila Khusna Arif Rakhman, Khusna Arif Kinichi Morita Kuntari Kuntari Kusuma Putri Suwondo Mai Anugrahwati Marcelina Marcelina Mardiyah Kurniasih Mudasir Mudasir Mudasir Mudasir Mudasir Mudasir Mudasir Mudasir Muhammad Syahrir Nindya Tri Muliawati Nuryono Nuryono Pamungkas, Alam Reformasi Putra Rambat Rambat Rambat, Rambat Rania Bakry Rania Bakry Romadhona, Miftakhul Roto Roto Roto Roto Sarwendah Ratnawati Hermanto Satriyo Krido Wahono Satriyo Krido Wahono Siti Nurhayati Siti Nurhayati Sofy Herawati Ratnaningtyas Sri Juari Santosa Sri Juari Santosa Sri Juari Santosa Suherman Suherman Suherman, Suherman Sunarti Sunarti Suratno Suratno Suratno Suratno Takashi Hayashita Takashi Hayashita Taufik Abdillah Natsir Tri Joko Raharjo Wina Akmarina Wulandari Sutiawan Yuniar Yuniar

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