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All Journal JURNAL KIMIA SAINS DAN APLIKASI MARINA CHIMICA ACTA POSITRON Jurnal Kimia Khatulistiwa Equator Journal of Management and Entrepreneurship Protobiont: Jurnal Elektronik Biologi SEMIRATA 2015 Journal of Tropical Biodiversity and Biotechnology Jurnal Farmasi Sains dan Komunitas Journal Of Chemical Process Engineering (JCPE) ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry Indonesian Journal of Pure and Applied Chemistry Martabe : Jurnal Pengabdian Kepada Masyarakat Walisongo Journal of Chemistry Jurnal Kartika Kimia Molekul: Jurnal Ilmiah Kimia Portal: Jurnal Teknik Sipil Bappenas Working Papers Abdimas Galuh: Jurnal Pengabdian Kepada Masyarakat Jurnal Abdimas ADPI Sains dan Teknologi Jurnal PkM (Pengabdian kepada Masyarakat) Jurnal Teknologi Jurnal Akademika Kimia Molekul: Jurnal Ilmiah Kimia Jurnal Akademika Kimia Jurnal Sipil Sains Terapan
Gusrizal Gusrizal
Department Of Chemistry, Faculty Of Mathematics And Natural Sciences, Universitas Tanjungpura, Jl. Prof. Dr. H. Hadari Nawawi, Pontianak 78124, Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Physics Social Sciences

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Pengkayaan Tanah Bekas Tambang Emas dengan Penambahan Lumpur IPAM sebagai Media Pertumbuhan Sawi (Brassica juncea L.) Gusrizal, Nuraini, Riza Linda,
Jurnal Protobiont Vol 3, No 2 (2014)
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/protobiont.v3i2.5521

Abstract

Soil of former gold mine requires soil quality improvement through increasing organic matter compound that may be sourced from the sludge of water treatment plant (IPAM). IPAM sludge which a by-product of water treatment from Kapuas river contains humic substance. The research aimed to discover the effects of former gold mine soil improved by IPAM sludge addition on mustard (Brassica juncea L.) growth. The research was conducted from August to October 2013. The research used Completely Randomized Design which consists of five planting media combination with five replications following replacement series method. The planting media combinations used are : Treatment A (0 % IPAM sludge : 100% former gold mine soil), Treatment B (20 % IPAM sludge : 80% former gold mine soil), Treatment C (40 % IPAM sludge : 60% former gold mine soil), Treatment D (60 % IPAM sludge : 40% former gold mine soil) and Treatment E (80 % IPAM sludge : 20% former gold mine soil). The results showed that the combination of 60% IPAM sludge: 40% former gold mine soil media significantly affecting the growth parameters of mustard, which are: up to 397.80 cm2 leaves area growth, 35.12 g wet mass and 0.42 g dry mass.
PENURUNAN BAHAN ORGANIK AIR GAMBUT MENGGUNAKAN BIJI ASAM JAWA (Tamarindus indica Linn) Gusrizal, Dyah Mawaddah, Titin Anita Zaharah,
Jurnal Kimia Khatulistiwa Vol 3, No 1 (2014): Jurnal Kimia Khatulistiwa
Publisher : Jurnal Kimia Khatulistiwa

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Air gambut mengandung bahan organik yang menyebabkan warna coklat kehitaman dan dapat menimbulkan bau. Bahan organik ini dapat dihilangkan melalui proses koagulasi flokulasi menggunakan biji asam jawa. Penelitian tentang pengaruh pH dan massa koagulan terhadap penurunan bahan organik air gambut dengan cara koagulasi telah dilakukan. Penurunan bahan organik air gambut ditentukan berdasarkan nilai absorbansi UV pada panjang gelombang 254 nm dan bilangan permanganat. Pengamatan pengaruh pH larutan dan massa biji asam jawa terhadap penurunan bahan organik dilakukan dengan metode batch. Hasil penelitian menunjukkan bahwa penurunan bahan organik terbaik diperoleh pada hasil eksperimen dengan pH 4 dan massa biji asam jawa sebanyak 2 g per 200 mL air gambut dengan perbandingan 1:1. Kondisi optimum ini mampu menurunkan bahan organik air gambut mencapai 50%. Berdasarkan hasil penelitian disimpulkan bahwa biji asam jawa dapat digunakan sebagai koagulan dalam menurunkan bahan organik air gambut. Kata kunci: biji asam jawa, air gambut, penurunan bahan organik
Identifikasi komponen lipofilik fraksi n-heksan spons Agelas nakamurai asal Pulau Randayan Kalimantan Barat (Identification of lipophilic component of n-hexane fraction on Agelas nakamurai Sponge from Randayan Island, West Kalimantan) Ajuk Sapar; Hamzi Anwari; Gusrizal Gusrizal
Marina Chimica Acta Vol. 14 No. 1 (2013): Volume 14 No. 1 (2013)
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (474.744 KB) | DOI: 10.20956/mca.v14i1.2928

Abstract

The isolation of lipophilic component of CC_7 on n-hexane fraction of Agelas nakamurai sponge has been conducted. The isolates are liquid oil colorless in 5.1 mg from 53,7 g sample. The isolates were analyzed by GC-MS and FTIR. The results of the analysis isolate CC_7 by FTIR showed the typical vibration of stretching at 2956,87 (asym. –CH3), 2924,09 (asym. –CH2), 2854,65 (sym. -CH3), 1730,15 (C=O), 1662,64 (C=C), 1595,13 (C-C(O)), 1269,16 (C-O), 1186,22 (C-C(O)-O), 1111,00 (O-C-C), 1020,34 (C-O-C-C), 962,48 (=C-H), 678,94 and 657,73 (cis –HC=CH–), bending rocking (-CH2-) at 731,02, bending (-CH2) dan (-CH3) at 1460,11 dan 1373,32. The results of GC-MS analysis showed the lipophilic component such as methyl palmitate (tR 19,77; m/z = 270), ethyl palmitate (tR 21,07; m/z = 284), palmitic acid (tR 21,18; m/z = 256, ethyl oleate (tR 24,09; m/z 310), tributyl asonitate (tR 24,38; m/z = 342), tributyl citrate (tR 24,95), tributyl acetyl (tR 26,41; m/z = 402), dioctyl adipate (tR 28,11; m/z =m 370, and squalene (tR 30,30; m/z 410).
Sintesis Kompleks Cu(II) dan Fe(III) dengan Ligan Asam Humat dan Aplikasinya sebagai Sensitizer pada Dye Sensitized Solar Cell (DSSC) Hairunnisa Hairunnisa; Gusrizal Gusrizal; Winda Rahmalia
Journal of Chemical Process Engineering Vol 5, No 2 (2020)
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (777.104 KB) | DOI: 10.33536/jcpe.v5i2.662

Abstract

Asam humat merupakan salah satu zat warna alami yang dapat digunakan sebagai sensitizer pada dye sensitized solar cell (DSSC) karena peka terhadap cahaya dan memiliki gugus fungsi asam karboksilat. Namun demikian, sebagai zat warna alami,kestabilan dan kapasitas absorpsi cahaya asam humat masih rendah, sehingga harus ditingkatkan, salah satunya dengan metode kompleksasi. Sintesis kompleks pada penelitian ini dilakukan dengan mereaksikan asam humat hasil isolasi dari tanah gambut dan prekursor logam (CuCl2.2H2O atau FeCl3) dalam akuades dan diaduk selama 14 jam pada suhu ruang. DSSC dipreparasi dengan komponen TiO2 sebagai semikonduktor, pasangan redoks I-/I3- sebagai elektrolit dan platina sebagai elektroda lawan. Hasil analisis menggunakan FTIR menunjukkan kompleks asam humat dengan logam Cu(II) dan Fe(III) telah berhasil disintesis dengan hilangnya puncak serapan pada bilangan gelombang 1720, 1401 dan 1250 cm-1 serta adanya vibrasi Cu-O dan Fe-O pada bilangan gelombang 509 dan 570 cm-1. Kehadiran ion logam pada sensitizer memberikan pengaruh signifikan terhadap nilai arus. Adapun kinerja terbaik dalam menghasilkan listrik diperoleh pada rangkaian DSSC kompleks asam humat-Fe(III) sebagai sensitizer dengan nilai arus sebesar 19,59 μA/cm2, tegangan sebesar 15,17 mV dan efisiensi konversi energi maksimum sebesar 5,39×10-4%.
Colorimetric Detection of Hg(II) Ion Using Silver Nanoparticles Capped with 3-Hydroxybenzoic Acid Gusrizal Gusrizal; Andi Hairil Alimuddin; Ajuk Sapar; Rizki Noviani Ridwan; Sri Juari Santosa
Molekul Vol 14, No 1 (2019)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (370.928 KB) | DOI: 10.20884/1.jm.2019.14.1.460

Abstract

In this paper, we report for the first time thesimple method for detection of Hg(II) ion in anaqueousmedium using silver nanoparticles capped with 3-hydroxybenzoic acid. Silver nanoparticles capped with 3-hydroxybenzoic acid were preparedby reduction of the silver ion with 3-hydroxybenzoic acid and without surface functionalization. The formation of silver nanoparticles was characterized by a UV-Visible spectrophotometer. The yellowcolloid of prepared silver nanoparticles capped with 3-hydroxybenzoic acid showed a surface plasmon resonance peak at 420 nm. The ability of silver nanoparticles capped with 3-hydroxybenzoic acid in detection was tested by doing a reaction with several metal ions individually(Na(I), K(I), Cu(II), Zn(II), Ca(II), Mg(II), Hg(II), Mn(II), Ni(II), Pb(II), and Co(II)). It was foundthat silver nanoparticles capped with 3-hydroxybenzoic acid highly selective toHg(II) and then the prepared silver nanoparticles were developedfor detection of Hg(II) ion. Addition of 1 mL Hg(II) ion into 4mL the as-preparedsilver nanoparticles reducedthe peak of surface plasmon resonance spectra, andthe reduction of peak intensity was proportional to the concentration of Hg(II) ion. A goodlinear relationship (R2= 0.998) between absorbance at 420 nm and concentrationof Hg(II) over the range 1.0x10-3to 5.5x10-3M was obtained. Silver nanoparticles capped with 3-hydroxybenzoic acid were highly sensitive to Hg (II) ion with the detection limit down to 4.7x10-5M. Application the method to the real water sample showed the excellentresult with recovery ranged from 98 to 101%. The proposed method was found to be useful forthe colorimetric detection of Hg(II) ion in an aqueousmedium.
Optimasi dan Validasi Metode Penentuan Kadar Asam Glikolat dan Asam Laktat Dalam Krim Menggunakan Kromatografi Cair Kinerja Tinggi Devi Wulandari; Gusrizal Gusrizal; Titin Anita Zaharah
ALCHEMY Jurnal Penelitian Kimia Vol 16, No 1 (2020): March
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (434.847 KB) | DOI: 10.20961/alchemy.16.1.34008.10-24

Abstract

Telah dilakukan optimasi dan validasi metode penentuan asam glikolat dan asam laktat dalam krim menggunakan kromatografi cair kinerja tinggi. Pemisahan asam glikolat dan asam laktat dilakukan pada kolom fasa balik C-8menggunakan fasa gerak asam ortofosfat 0,1% dengan pH 3,5 dan detektor UV-Visible. Standar asam glikolat dan asam laktat dibuat dengan melarutkannya menggunakan asam ortofosfat 0,1% pH 3,5. Hasil eksperimen menunjukkan bahwa pada rentang konsentrasi 25 – 400 μg/mL, asam glikolat dan asam laktat memiliki kurva yang linear dengan koefisien korelasi masing-masing 0,9997 dan 0,9999. Uji presisi untuk larutan standar berkonsentrasi 100 µg/mL menghasilkan simpangan baku relatif sebesar 1,49% untuk asam glikolat dan 1,72% untuk asam laktat. Metode yang telah dioptimasi memberikan akurasi yang baik yang ditunjukkan oleh nilai perolehan kembali dari pengukuran tiga spiked sample dengan konsentrasi berbeda (50, 100, dan 150 μg/mL). Nilai perolehan kembali untuk masing-masing konsentrasi spiked sample adalah 97,12% ± 0,69; 98,76% ± 0,43; 100,80% ± 0,29 untuk asam glikolat dan 97,58% ± 0,39; 96,20% ± 0,68; 98,00% ± 0,38 untuk asam laktat. Batas deteksi dan batas kuantisasi untuk asam glikolat adalah 0,05 dan 0,17 μg/mL, sedangkan untuk asam laktat adalah 1,40 dan 4,67 μg/mL. Nilai kekasaran metode untuk asam glikolat pada hari pertama dan hari kedua adalah 1,43% dan 1,67%, sedangkan untuk asam laktat adalah 1,67% dan 1,25%. Metode yang telah dioptimasi dan divalidasi berpotensi untuk digunakan secara spesifik pada penentuan kadar asam glikolat dan asam laktat dalam krim.Optimization and Validation of Determination Methods of Glycolic Acid and Lactic Acid in Cream Using High-Performance Liquid Chromatography. A high-performance liquid chromatography analytical method for the determination of glycolic acid and lactic acid in creams has been optimized and validated. The separation was performed in a reverse phase C–8 column with a mobile phase of 0.1%, orthophosphoric acid at pH 3.5, and UV-Visible detector. The standard of glycolic acid and lactic acid was dissolved in 0.1% orthophosphoric acid at pH 3.5. The experimental results showed that in the concentration range of 25–400 μg/mL, glycolic acid and lactic acid showed a linear curve with a correlation coefficient of 0.9997 and 0.9999, respectively. The precision test for standard solutions containing 100 µg/mL resulted in a relative standard deviation of 1.49% for glycolic acid and 1.72% for lactic acid. The optimized method provided good accuracy indicated by the recovery of the measurement of three spiked samples in different concentrations (50, 100, and 150 μg/mL). The recovery for each concentration of the spiked sample was 97.12% ± 0.69; 98.76% ± 0.43; 100.80% ± 0.29 for glycolic acid and 97.58% ± 0.39; 96.20% ± 0.68; 98.00% ± 0.38 for lactic acid. The limit of detection and limit of quantization for glycolic acid was 0.05 and 0.17 μg/mL, and for lactic acid was 1.40 and 4.67 μg/mL. The ruggedness of the method for glycolic acid on the first day and second day was 1.43% and 1.67%, while for lactic acid, it was 1.67% and 1.25%. The method that has been optimized and validated shows the potential to be used specifically for the determination of glycolic acid and lactic acid in the cream.
DETERMINATION OF pH EFFECT AND CAPACITY OF HEAVY METALS ADSORPTION BY WATER HYACINTH (Eichhornia crassipes) BIOMASS Anis Shofiyani; Gusrizal Gusrizal
Indonesian Journal of Chemistry Vol 6, No 1 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (487.135 KB) | DOI: 10.22146/ijc.21774

Abstract

Effect of pH and determination of adsorption capacity of Cu(II), Ni(II) and Pb(II) heavy metal ions on adsorbent prepared from Eichhornia crassipes (eceng gondok) biomass has been investigated. The influence of media acidity on the adsorption characteristics was carried out by determining ions adsorbed at various pH in the range of 2-10, while an adsorption isotherm model of Langmuir was used to estimate the capacity of adsorption. Results showed that Cu(II) was optimally adsorbed at the range pH of 5-6, Ni(II) at 2-4, while Pb(II) reached an optimum adsorption at pH 2-3. The adsorption data of Cu(II), Ni(II) and Pb(II) for the adsorbent folowed quite well Langmuir isotherm model, confirmed that such chemisorptions involved on that process. The ions adsorption capacities (am) were 27.47, 16.69, and 15.04 mg/g for Pb(II), Cu(II), and Ni(II), respectively.
Silver Nanoparticles Capped with p-Hydroxybenzoic Acid as a Colorimetric Sensor for the Determination of Paraquat Gusrizal Gusrizal; Sri Juari Santosa; Eko Sri Kunarti; Bambang Rusdiarso
Indonesian Journal of Chemistry Vol 20, No 3 (2020)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1240.279 KB) | DOI: 10.22146/ijc.48806

Abstract

Highly stable silver nanoparticles capped with p-hydroxybenzoic acid were synthesized by reducing silver ion with p-hydroxybenzoic acid and used for the detection of paraquat. The synthesized silver nanoparticles, which are yellow, exhibited an absorption peak at 420 nm when measured with a UV-visible spectrophotometer due to the surface plasmon resonance. In the presence of paraquat, the color of silver nanoparticles changed from yellow to purple accompanied by the appearance of a new peak at 580 nm in addition to the peak at 420 nm. In order to obtain optimum experimental conditions, temperature, and time of reaction were optimized, and the ratio of absorbance obtained at 580 nm and 420 nm (A580/A420) were monitored. The A580/A420 is proportional to the concentration of paraquat. Under the most favorable condition, the calibration curve showed a high level of linearity ranging from 6.0 × 10–4 to 1.0 × 10–3 M, and the detection limit was found to be 8.30 × 10–6 M. Silver nanoparticles capped with p-hydroxybenzoic acid was found to be useful for the colorimetric determination of paraquat in the aqueous medium.
EKSTRAKK UMBI BAWANG DAYAK (Eleutherine palmifolia (L.) Merr.) SEBAGAI PEREDUKSI ION PERAK DALAM SINTESIS NANOPARTIKEL PERAK Normaningsih Rahayu; Gusrizal Gusrizal; Nurlina Nurlina
Indonesian Journal of Pure and Applied Chemistry Vol 3, No 3 (2020)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (937.878 KB) | DOI: 10.26418/indonesian.v3i3.44151

Abstract

Silver nanoparticles (AgNPs) are one of the best plasmonic candidates that have been used in Surface Plasmon Resonance (SPR)-based nanosensors for the detection of metallic ions. In this research, AgNPs were prepared by the method using Eleutherine palmifolia (L.) Merr root ethanol extract. Silver nanoparticles were synthesized by reduction of silver nitrate with Eleutherine palmifolia (L.) Merr. Tuber extract (concentration of extract = 0,01%, pH = 11, volume ratio 1:1) in the boiling water bath for 90 minutes. The formation of silver nanoparticles was indicated by the appearance of yellow color and monitored using a UV-Visible spectrophotometer. The spectra showed the maximum peak at 401-405 nm. The resulted silver nanoparticles with the size of 10-20 nm were stable at least for 16 weeks.
SINTESIS DAN TRANSISI ELEKTRONIK SENYAWA KOMPLEKS KLOROFIL DENGAN LOGAM (M = Co2+, Fe3+) Roberta Anjelia; Imelda Hotmarisi Silalahi; Gusrizal Gusrizal
Indonesian Journal of Pure and Applied Chemistry Vol 2, No 3 (2019)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2809.383 KB) | DOI: 10.26418/indonesian.v2i3.36891

Abstract

Metal complexes of chlorophyll (M = Co2+, Fe3+) have been prepared from a reaction of chlorophyll isolated from cassava leaves and metal precursors (CoCl2.6H2O or FeCl3) in methanol under reflux for 4 hours. FTIR spectra of the products indicated bond changes in chlorophyll structure particularly on absorption peaks with regard to N–H, N=C, C=C and C=O groups as a result of substitution of magnesium ion with cobalt(II) or iron(FE). UV-Vis spectra mainly showed hypsochromic shifts along with an increase in absorption intensity on Soret band area in the two complexes implying electronic effects of chlorin rings due to metal complexation.
Co-Authors Abrori, Sayyidus Dzaki Adi Maulana, Adi Ajuk Sapar Alimunddin, Andi Hairil Andi Hairil Alimuddin Andi Hairil Alimuddin Andrian Kaifan Anis Shofiyani AR, Sulaiman Ari Widiyantoro Bambang Rusdiarso Bambang Rusdiarso Chairil Anwar Chris Octavianus Cucu Suhery Devi Wulandari Dwi Yuniarsih Eko Sri Kunarti Eko Sri Kunarti Elvi Rusmiyanto Pancaning Wardoyo, Suci Lestari, Mukarlina, Endah Sayekti Evi Noviani Fikri z.a, Muhammad Aulia Fishal, Fishal Gani, Fauzi A. Hairunnisa Hairunnisa Hamzi Anwari Hanafiah Hanafiah, Hanafiah Hanif Hanif Haris, Raihan Harlia, Harlia Hestivera, Eva Novianti Ibnur Rusi Imelda Hotmarisi Silalahi Irma D. Oktavianta Jasmita, Jasmita Karimuddin, Karimuddin Krisnanti, Gendis Yayi Kurniati Kurniati Lestari, Titiek Mastura, Meila MISWAR MISWAR Miswar, Khairul Muhammad Reza Mulizar Mulizar Muzaffar, Anis Fikri Nasril Fuad Hasan Nelly Wahyuni Normaningsih Rahayu Noverando Rafiel Angelo Nurlina Nurlina Nurlina Nurlina Nurlina, Nurlina Prayitno, Dwi Imam Puji Ardiningsih Putra, Harisal Radianti, Sri Rahayu, Warsi Kurnia Renny Puspita Sari Rinaldi, Muhammad Ikhsan Risa Nofiani Risa Nofiani Rizki Noviani Ridwan Rizky Noviani Ridwan Roberta Anjelia Rudiyansyah Rudiyansyah Rudiyansyah Rudiyansyah Sabardiansyah, Rajab Salatiana Salatiana Saprianti, Siti Sari, Emilda Sari, Gladis Raspida Shofiyani, Anis Siregar, Muhammad Andryansyah Siregar, Muhammad Rizkyansyah Sri Juari Santosa Sri Juari Santosa Sri Juari Santosa ST., MT, Syaifuddin Din Sulaiman Sulaiman Syahbanu, Intan Syarwan, Syarwan Syukri Syukri Thamrin Usman Titin Anita Zahara, Titin Anita Titin Anita Zaharah Ulfa, Nadia Ummi Hanifah Uul Warosatul Ambiya Warsidah Warsidah Wibowo, M. Agus Wibowo, Muhamad Agus Widiyananta, Surya Winda Rahmalia Winda Rahmalia Yudha Arman Yulia Zahara Zaharah, Titin Anita