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All Journal Alchemy : Journal of Chemistry The Journal of Pure and Applied Chemistry Research Journal of Islamic Pharmacy
Diana Candra Dewi
Universitas Islam Negeri Maulana Malik Ibrahim Malang
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Public Health

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ANALISIS KADAR LOGAM TEMBAGA (Cu) PADA PERMEN SECARA SPEKTROFOTOMETRI SERAPAN ATOM (SSA) Rahmawati, Eny; Dewi, Diana Candra; Fauziyah, Begum
Journal of Islamic Pharmacy Vol 1, No 1 (2015): Jurnal Farmasains
Publisher : Universitas Islam Negeri Maulana Malik Ibrahim Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/jip.v1i1.4179

Abstract

Permen yang dijual di pasaran diduga mengandung sejumlah logam berat misalnya logam tembaga. Dalam penelitian ini, sampel permen didestruksi dengan HNO3, HNO3/H2SO4 (3:1) dan HNO3/H2SO4/H2O2 (6:2:1) untuk mengetahui zat pengoksidasi terbaik logam tembaga pada permen. Selanjutnya dilakukan pengukuran kadar logam tembaga dengan Spektrofotometer Serapan Atom (SSA). Hasil analisis uji one way anove dengan uji F menunjukkan bahwa zat pengoksidasi terbaik logam tembaga dalam sampel permen adalah HNO3/H2SO4. Sementara itu, perolehan kadar logam tembaga pada permen dengan label A, B, C, D, dan E berturut-turut sebesar 1,72 mg/Kg; 1,69 mg/Kg; 1,57 mg/Kg; 1,71mg/Kg; dan 1,69 mg/Kg. Dengan demikian, kadar logam tembaga pada permen yang dijual di pasaran masih berada dalam batas aman konsumsi yang ditetapkan oleh SNI. Kata Kunci: permen, destruksi basah, oksidator, waktu stabilitas, Spektrofotometri Serapan Atom (SSA)
STUDI KESEIMBANGAN ADSORPSI MERKURI(II) PADA BIOMASSA DAUN ENCENG GONDOK (Eichhornia crassipes) Al-ayubi, Muhammad Chalid; Barroroh, Himmatul; Dewi, Diana Candra
ALCHEMY ALCHEMY (Vol.1 No.2
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (214.663 KB) | DOI: 10.18860/al.v0i0.1675

Abstract

Metal ion adsorption research with utilizing Eichhornia crassipes leaf biomass has been done. Metal ions which are ever researched are Cr, Cd, Pb and Ni, but research with utilizing Hg metal ion is never done, so need to be implemented a mercury adsorption research to eichhornia crassipes leaf biomass. Because pH solution is very influential to metal ion adsorption by biomass, so in this research is inspected determining of optimum pH to mercury adsorption. This research is experimental research which is started with determining of optimum pH, this determining of optimum pH is implemented with way of interacting 60 mmg/L mercury metal ion with 0,1 gr eichhornia crassipes leaf biomass for 60 minutes at range of pH 2, 3, 4, 5, 6, 6, 4, 6, 7, 7 and 8, then continued with control solution production to know the solubility of mercury in every pH. The determination of adsorption capacity, adsorption constanta and adsorption energy are implemented with way of interacting eichhornia crassipes leaf biomass with mercury metal ion by 20, 30, 40, 50, 60, 70, 80, 90, 100 and 150 mmg/L variation of concentration for 60 minutes in pH optimum. Data the result of experiment then processed using the similarity of Langmuir isotherm and Freunlich.. The result of the research indicates that pH 6 is mercury adsorption optimum pH in eichhornia crassipes leaf biomass. The mercury isotherm adsorption in eichhornia crassipes leaf biomass takes a part of the similarity of langmuir isotherm with point R2 = 0,982, from the similarity of langmuir isotherm gotten adsorption capacity (Xm) in the mount of 4, 806 x 10-5 mol/gr with adsorption constanta (K) 27130,85 mol/L and adsorption energy (E) in the mount of 25,46079 kJ/mol.
OPTIMASI METODE PENENTUAN KADAR LOGAM TEMBAGA DAN TIMBAL DALAM GULA PASIR SECARA SPEKTROFOTOMETRI SERAPAN ATOM DENGAN DESTRUKSI MICROWAVE DIGESTION Dewi, Diana Candra; Fauziyah, Begum; Suryadinata, Arief; Annisa, Dewi; Afifah, Nurul
ALCHEMY ALCHEMY (Vol.2 No.2
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (417.983 KB) | DOI: 10.18860/al.v0i0.2884

Abstract

Tembaga (Cu) dan Timbal (Pb) adalah bahan ikutan yang ditemukan dalam gula pasir. Penelitian ini  bertujuan mengetahui performa analitik kurva standar dengan penentuan suhu dan waktu terbaik destruksi menggunakan microwave digestion, serta performa analitik kurva adisi standar menggunakan suhu dan waktu terbaik destruksi.Penelitian  ini  meliputi penentuan performa  analitik  untuk kurva  standar yaitu linearitas, batas deteksi dan batas kuantitasi, sensitivitas, akurasi serta presisi untuk larutan standar Cu dan Pb, kemudian dilakukan pendestruksian sampel gula pasir dengan destruksi basah menggunakan microwave digestion dengan variasi suhu 160, 180 dan 200 oC dan variasi waktu 10, 15, 20 dan 30 menit dan waktu penyimpanan 1 sampai 5 hari. Penentuan  performa  analitik  juga ditentukan pada  kurva adisi standar untuk larutan Cu dan Pb yang telah ditambahkan sampel hasil destruksi.Hasil penelitian menunjukkan bahwa : Suhu dan waktu terbaik destruksi gula pasir menggunakan microwave digestion untuk analisis Cu yaitu suhu 200 oC dan waktu 15 menit serta waktu penyimpanan sampai 3 hari. Suhu dan waktu terbaik microwave digestion untuk menganalisa logam timbal (Pb) adalah 180 0C dan 10 menit serta waktu penyimpanan hanya sampai 1 hari. Performa  analitik  untuk kurva  standar  tembaga (Cu) meliputi r2 = 0,9993; LOD (Limit of Detection) 0,0011 ppm dan LOQ (Limit of Quantitation) 0,0036 ppm;  sensitivitas 0,2; rata-rata akurasi sebesar 99.96%; serta presisi 9,46%, sedangkan performa  analitik  untuk  kurva  adisi  standar  tembaga (Cu)  meliputi  r2 = 0,9999; LOD 0,0012 ppm dan LOQ 0,004 ppm; sensitivitas 0,1729, rata-rata akurasi sebesar 100,07% serta presisi 5,38%. Performasi analitik untuk kurva standar timbal (Pb) meliputi r2 = 0,9999; LOD 0,0019 ppm,  LOQ 0,0066 ppm; sensitivitas 0,1069 ppm ; rata-rata akurasi sebesar 99,56 % serta presisi 2,32 %. Performasi analitik kurva adisi standar timbal (Pb) meliputi r2 = 0,9999; LOD 0,0018 ppm, LOQ 0,0060 ppm; sensitivitas 0,1090 ppm; rata-rata akurasi sebesar 100,01 % serta presisi 1,94 %.
Analisis Kadar Timbal (Pb) pada Bedak Tabur dan Eyeshadow dengan Variasi Metode Destruksi dan Zat Pengoksidasi dengan Spektroskopi Serapan Atom Dewi, Diana Candra; Mahmudah, RIf'atul; Kumalawati, Oktrin Rustika; Amalullia, Diana
ALCHEMY Vol 7, No 1 (2019): ALCHEMY: Journal of Chemistry
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (391.393 KB) | DOI: 10.18860/al.v7i1.7016

Abstract

Loose powder and eyeshadow are cosmetics often used by women in their daily activities. Some cosmetic products contain heavy metal in the composition. This study aims to determine the concentration of lead in the loose powder and eyeshadow both registered and unregistered at the Food and Drug Supervisory Agency (BPOM) in Malang. The destruction method used is wet digestion in the opened and closed systems with variations of oxidizing agents of HNO3 and HClO4. The concentration of lead was analyzed using atomic absorption spectroscopy (AAS). The results of destruction optimization on loose powder and eyeshadow showed wet digestion in closed system gave the best destruction results. The best oxidizing agent for both products is a mixture of HNO3: HClO4 (2: 1). Lead concentration in the loose powder product for samples A, B, C, D was 18.90±0.35, 19.10±0.46, 23.47±0.65 and 28.90±0.35mg/Kg, respectively. Eyeshadow samples of E, F, G, and H contained lead concentrations were 25.67±1.76, 34.23±0.57, 45.30±0.56 and 45.90±1.78 mg/Kg, respectivelyKeywords: cosmetics, loose powder, eyeshadow, lead  Bedak tabur dan eyeshadow merupakan kosmetik yang sering digunakan oleh wanita dalam kehidupaan sehari-hari. Beberapa produk kosmetik mengandung logam berat dalam komposisinya. Penelitian ini bertujuan untuk menentukan kadar timbal pada bedak tabur dan eyeshadow baik yang terdaftar dan tidak terdaftar di Badan Pengawas Obat dan Makanan (BPOM) di kota Malang. Metode yang digunakan adalah metode destruksi basah (terbuka dan tertutup) dengan variasi zat pengoksidasi HNO3 dan HClO4. Kadar timbal dianalisis menggunakan spektroskopi serapan atom (SSA). Hasil optimasi desktruksi pada bedak tabur dan eyeshadow menunjukkan bahwa destruksi basah tertutup memberikan hasil destruksi terbaik. Adapun pengoksidasi terbaik untuk kedua produk tersebut adalah campuran HNO3:HClO4 (2:1). Kadar timbal bedak tabur pada sampel A, B, C, D masing-masing sebesar 18,90±0,35; 19,10±0,46; 23,47±0,65 dan 28,90±0,35 mg/Kg. Sampel eyeshadow E, F, G, dan H mengandung kadar timbal sebesar 25,67±1,76; 34,23±0,57; 45,30±0,56 dan 45,90±1,78 mg/Kg, berturut-turut.Kata kunci: kosmetik, bedak tabur, eyeshadow, timbal
DETERMINASI KADAR LOGAM TIMBAL (Pb) DALAM MAKANAN KALENG MENGGUNAKAN DESTRUKSI BASAH DAN DESTRUKSI KERING Dewi, Diana Candra
ALCHEMY ALCHEMY (Vol.2 No.1
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (469.164 KB) | DOI: 10.18860/al.v0i0.2299

Abstract

Lead (Pb) is pollutant found in canned foods. It is derived from the soldering between the can and the lid. This study aims to find out the analytical performance of standar curves , the better method between dry ashing dan wet ashing,  the best oxidant solution in wet ashing ang determine lead in canned sausage and canned lychee.This research including : Performance determination of the standard addition curve analysis includes linearity, limits of detection and limits of quantitation, sensitivity, accuracy and precision, sample destruction  using dry ash 500 oC and wet destruction with a variety of oxidizing subtrace such as HNO3 p.a; HNO3 p.a, H2SO4 p.a (3:1), and HNO3 p.a, H2SO4 p.a, H2O2 p.a (6:2:1), and determine  the concentration of lead  in canned sausage and canned lycheeThe results of this research of the standard curve analysis of lead (Pb) are  r =0,9999, LOD 0,028 ppm, LOQ 0,0933 ppm, and sensitivity of 0,00757 the average accuracy of 98%, and precision 2,74%. Wet ashing is more stabil than dry ashing. The best oxidizing substance of canned sausage comes from HNO3, H2SO4 and H2O2 (6:2:1) and lead was found 0,64 ppm whilebest oxidizing substance of canned lychee comes from HNO3, H2SO4 (3:1) and lead was found 0,72 ppm.
Analysis of Metal Copper Concentration at Candy using Atomic Absorption Spectrophotometry (AAS) Rahmawati, Eny; Dewi, Diana Candra; Fasya, Ahmad Ghanaim; Fauziyah, Begum
ALCHEMY ALCHEMY (Vol.4, No.1
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (357.953 KB) | DOI: 10.18860/al.v4i1.3142

Abstract

Candy sold in the market could be containing a heavy metals like copper. In this study, candy was destructed with HNO3, HNO3/H2SO4 (3:1) dan HNO3/H2SO4/H2O2 (6:2:1) to know the best matter oxidixer for copper. Then, evaluated the levels of copper using Atomic Absorption Spectrophotometer (AAS). The one way anove result with F test showed that the best oxidizer for copper in candy is HNO3/H2SO4. The average concentration of Copper in candy coded A, B, C, D, and E were 1. 72 mg/Kg; 1.69 mg/Kg; 1.57 mg/Kg; 1.71 mg/Kg; and 1.69 mg/Kg respectively. The content of copper in candies were the under daily dietary recommended limit based on SNI regulation. Key Words: Atomic Absorption Spectrophotometry, candy, matter oxidizer, time stability, wet destruction 
ANALISIS KADAR TIMBAL (Pb) PADA PERMEN BERKEMASAN SECARA SPEKTROFOTOMETRI SERAPAN ATOM (SSA) DENGAN VARIASI LARUTAN PENDESTRUKSI Afifah, Siti Nurul; Dewi, Diana Candra; Ningsih, Rahmawati
ALCHEMY ALCHEMY (Vol.3, No.2
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (512.374 KB) | DOI: 10.18860/al.v0i1.2913

Abstract

Allah berfirman dalam al Qur’an Surat al Ma’idah ayat 88 yang menjelaskan tentang anjuran makanan Halalan Thayyiban. Permen merupakan makanan yang banyak digemari oleh semua kalangan. Dalam permen berkemasan dapat mengandung timbal (Pb) dikarenakan oleh beberapa faktor; diantaranya adalah faktor bahan baku pembuatan permen yang telah mengandung timbal (Pb), faktor media produksi permen yang berbasis logam dengan proses pemanasan, faktor kemasan permen yang mengandung timbal (Pb); serta faktor zat aditif dalam permen.Penelitian ini meliputi penentuan variasi larutan pendestruksi terbaik antara HNO3 p.a. (30 mL); HNO3 : H2SO4 (30 mL) perbandingan 3:1 serta HNO3 : H2SO4 : H2O2 (30 mL) perbandingan 3:2:1 lalu dilanjutkan dengan uji One Way Annova. Penentuan waktu kestabilan logam terbaik dalam sampel larutan pada hari ke-0; 1; 3; 7 dan hari ke-15. Penentuan kadar timbal (Pb) pada masing-masing sampel hard candy dan uji kesesuaian kadar dengan SNI hard candy.Hasil penelitian menunjukkan bahwa pada variasi larutan pendestruksi terbaik adalah HNO3 dan H2SO4 (3:1) dengan nilai rerata konsentrasi yang paling tinggi yaitu 21,35 mg/kg. Hasil Uji Annova adalah F hitung (10215) F tabel (5,14) yang menunjukkan adanya perbedaan yang siginifikan antara ketiga variasi larutan pendestruksi. Waktu kestabilan diperoleh berdasarkan Uji Annova pada hari ke-3 menuju hari ke-7 dengan hipotesis Ho-nya diterima dengan F hitung (0,455) F tabel (7,71). Kadar timbal (Pb) yang ditemukan pada kelima sampel permen berkisar antara 25,3 mg/kg hingga 26,8 mg/kg. Berdasarkan acuan Sandar Nasional Indonesia (SNI) No. 3547.1:2008 bahwa kelima sampel permen tersebut tidak layak untuk dikonsumsi karena melebihi nilai ambang batas maksimum cemaran logam timbal (Pb) yaitu 2,0 mg/kg.
Identification of volatile compounds in several meat and bone broth using Solid Phase Micro Extraction-Gas Chromatography Mass Spectrometry (SPME-GCMS) for initial detection of Halal and Non-Halal Food Diana Candra Dewi; Chanif Mahdi; Hermin Sulistyarti; Aulani`am Aulani`am
The Journal of Pure and Applied Chemistry Research Vol 12, No 2 (2023): May-August 2023
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2023.012.02.3308

Abstract

The development of techniques for detecting halal and non-halal animal meat is of great importance as a useful tool for monitoring and assuring food quality for Muslim. Flavor or aroma is one of the sensory attributes for consumers to distinguish broth cattle. The differences aroma of broth cattle is contributed by the content of volatile compounds. This study was aimed to determine the composition of volatile compounds in meat and bone broth from five different animals, i.e., cow (beef), pig (pork), goat, lamb, and chicken for initial identification of halal and non halal food. A preliminary test for samples of meat and bone broth was done by identifying their physical properties including pH, viscosity, and density. The volatile compounds in meat and broth samples were extracted using a solid phase-micro extraction (SPME) at room temperature and analyzed by gas chromatography-mass spectrometry (GCMS). The results revealed the physical properties of meat and bone broth, i.e. pH, viscosity, and density, cannot be used to distinguish the type of broth produced from beef, pork, goat, lamb, and chicken. Successful results for the identification were achieved through chromatogram profile of volatile compounds from meat and bone broth which show characteristics to each type of animal, and therefore it can be used to distinguish pork from beef, goat, lamb, and chicken as initial detection for halal and non halal food. The research also identified 7 predominant volatile compounds as a marker for meat pork and other 8 specific compounds marker for pork bone.
Alternative Techniques for Animal Fat Authentication Based on Microscopic Crystal Pattern and Fatty Acid Composition Using Gas Chromatography-Mass Spectrometry (GC-MS) Dewi, Diana Candra; Mahdi, Chanif; Sulistyarti, Hermin; Aulanni`am, Aulanni`am
The Journal of Pure and Applied Chemistry Research Vol. 13 No. 2 (2024): Edition May-August 2024
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2024.013.02.3351

Abstract

Fat authentication is strongly required for the reason of religious food ethics, human health, and preferences. This research reported two simple techniques approach for recognizing fat based on the character of microscopic and physicochemical properties of fat extractedusing different polarity solvents. The formation of microcrystals as well as fatty acid composition were investigated by involving variables of four different types of animal fat and three different solvents. Theisolate fats were directly crystallized under incubation at room temperature and observedusing an optical microscope while fatty acid composition was determined by hydrolyzing and trans-esterifying fat samples before analysis using GC-MS. The microscopic structures of the obtained crystals areneedle-basedwitharadial orientation in spherulitic pattern which characteristic to each type of fat. The lard fat crystal was authentically distinguished from its shape of a partially radial fan, whilst the shape of fat crystals from beef, goat, and lamb are needle-shaped with a full radialorientation. Fatty acids obtained from all types of fats and types of solvents show similar types but different abundances, the main saturated fatty acids are palmitate, stearate myristic and the main unsaturated fatty acids are oleic, palmitoleic, and linoleic. Gas chromatography-mass spectrometry (GC-MS) analysis exhibited that lard composed higher ΣUSFA compared to ΣSFA but other fats (tallow, goat, and lamb) showed converse behavior.
Analisis KadarTimbal (Pb) pada Kubis (Brassica oleraceae L.) dari Sentra 2 Kecamatan Kabupaten Malang menggunakan Metode Destruksi Basah Tertutup (Refluks) secara Spektroskopi Serapan Atom (SSA) Meyfian, Yusha Hasna; Dewi, Diana Candra
ALCHEMY:Journal of Chemistry Vol 12, No 2 (2024): ALCHEMY: JOURNAL OF CHEMISTRY
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/al.v12i2.25802

Abstract

Kubis yang ditanam dipinggir jalan memungkinkan terpapar polusi asap kendaraan. Penelitian ini bertujuan untuk mengetahui kadar timbal (Pb) pada sampel kubis. Pengambilan sampel dilakukan dengan variasi jarak (10, 20, 30 meter) dan perlakuan sampel (tanpa pencucian, pencucian, perendaman, perebusan). Sampel di refluks dengan zat pengoksidasi HNO3 + H2SO4 (3:1) dianalisis secara Spektroskopi Serapan Atom (SSA). Hasil kadar logam timbal dalam sayuran kubis di Kecamatan Ngantang dan Kecamatan Pujon jarak 10 meter 20 meter 30 meter dan kadar logam timbal perlakuan tanpa pencucian pencucian perendaman perebusan. Berdasarkan hasil uji statistika two way ANOVA didapatkan nilai sig 0.005 dan Fhitung Ftabel yang menunjukkan bahwa variasi jarak dan perlakuan sampel berbeda nyata serta berpengaruh secara signifikan terhadap kadar logam timbal (Pb). Cabbage planted on the side of the road may be exposed to vehicle exhaust pollution. This research aims to determine lead (Pb) levels in cabbage samples. Sampling was carried out at varying distances (10, 20, 30 meters) and sample treatment (without washing, washing, soaking, boiling). Samples refluxed with the oxidizing agent HNO3 + H2SO4 (3:1) were analyzed using Atomic Absorption Spectroscopy (AAS). Results of lead metal levels in cabbage vegetables in Ngantang District and Pujon District, a distance of 10 meters 20 meters 30 meters and metal levels of treated tubs without washing washing soaking boiling. Based on the results of the two way ANOVA statistical test, the sig value was 0.005 and Fcount Ftable, which shows that variations in distance and sample treatment were significantly different and had a significant effect on lead (Pb) levels.
Co-Authors A. Ghanaim Fasya Afriani, Ida Irma Amalullia, Diana Arief Suryadinata Aulani`am Aulani`am Aulanni`am, Aulanni`am Begum Fauziyah Chanif Mahdi Chanif Mahdi Dewi Annisa, Dewi Eny Rahmawati, Eny Fauziyah, Begum Hermin Sulistyarti Himmatul Barroroh JANNAH, FARIDATUL Kumalawati, Oktrin Rustika Mahmudah, RIf'atul Meyfian, Yusha Hasna Muhammad Afif Muhammad Chalid Al-ayubi, Muhammad Chalid Rahmawati Ningsih, Rahmawati Rahmawati, Eny Siti Nurul Afifah, Siti Nurul Suci Amalia