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NOOR HUBDRYAWATI
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Jurnal Kimia Mulawarman
Published by Universitas Mulawarman
ISSN : 16935616     EISSN : 24769258     DOI : DOI: https://doi.org/10.30872/jkm
Core Subject : Science,
Chemistry
Journal of Kimia Mulawarman is a peer-reviewed, open access journal that publishes original research articles, review articles, as well as short communication in all areas of chemistry, including educational chemistry and applied chemistry.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 8 Documents
 1 
Search results for , issue "Vol 19 No 1 (2021)" : 8 Documents clear
PHYTOCHEMICAL SCREENING OF THREE BATAK LEEKS VARIANS (A. chinense G. Don) Aliyah Fahmi
JURNAL KIMIA MULAWARMAN Vol 19 No 1 (2021)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v19i1.1002

Abstract

"Phytochemical screening of Three Batak Leeks (A. chinense G. Don) Varians " has been carried out. For phytochemical screening, secondary metabolites were analyzed, including alkaloids, phenolics, flavonoids, terpenoids, steroids and saponins. From the three samples of Batak Leeks (fresh, dried and methanol extract), the result was concluded that secondary metabolites of the terpenoids were weak in the methanol extract and not detected in the fresh and dried Batak leeks .
VALIDASI METODE ELEKTRODA SELEKTIF ION (ESI) DI PT.PUPUK KALIMANTAN TIMUR UNTUK PENENTUAN KADAR AMMONIA (NH3) DI UDARA AMBIEN Ristia Asri Fidayana; Teguh Wirawan; Aman Sentosa Panggabean
JURNAL KIMIA MULAWARMAN Vol 19 No 1 (2021)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v19i1.842

Abstract

Validation method of ammonia (NH3) determination in ambient air with the ion-selective electrode (ESI) method has been carried out. The purpose of this study is to determine linearity, accuracy, precision, method detection limits, and selectivity. The performance characteristics of the method are determined using standard ammonium chloride solutions. The instrument used to detect ammonia levels is the ion analyzer. The results in the linearity test show an r2 value of 0.9999. Accuracy test results show recovery values in the range of 88.86 to 100.48%. The precision of this method has a value of % RSD smaller than 2/3 CV Horwitz.. The detection limit value of the method was 0.0224 mg/L. The presence of interference ions such as SO2 and NO2 does not affect the measurement of ammonia concentrations. The results of the validation test show that the method used can be used to determine ammonia concentrations in ambient air.
IDENTIFIKASI DEKSAMETASON PADA JAMU PENGGEMUK BADAN YANG DIJUAL DI E-MARKETPLACE SHOPEE MENGGUNAKAN KROMATOGRAFI LAPIS TIPIS Sri Widia Ningsih; Lerny Serena Sirait; Dewi Setiyawati
JURNAL KIMIA MULAWARMAN Vol 19 No 1 (2021)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v19i1.1069

Abstract

The regulation of Indonesian Health Ministry number 007 of 2012 about traditional medicines registration explained that traditional medicines are prohibited from containing Drug Chemicals (DC). The aim of the study was to identify the DC of dexamethasone in Agency Fattening Herbs sold in Shopee e-marketplace. Dexamethasone is a corticosteroid drug used as an anti-inflammatory agent. Long-term use can cause a hormonal effect, iatrogenic chusing syndrome. This study was a qualitative descriptive using thin layer chromatography (TLC). The mobile phase used to identify dexamethasone in this study was Ethyl acetate: Toluen: Methanol (45 : 54: 1) and the solvent used was Chloroform: Methanol (9 : 1). Many of the samples tested were 3, namely X, Y and Z. The results of TLC formed purple stain spots on all three samples that were parallel to the comparison on 254 nm UV light. The price of dexamethasone comparison Rf is 0.53. The Rf value of the sample X was 0.34. The Rf value of sample Z is 0.53. The calculation results of Rf value were analyzed by SPSS with a significant value (p ≤ 0.001). The analysis was continued by the Duncan test to show groups that had differences. Of the three samples Agency Fattening Herbs tested two of them (X and Z) containing Dexamethasone whereas one (Y) does not has Dexamethasone. Keywords: Agency fattening herbs, dexamethasone, e-marketplace, thin layer chromatography
VALIDASI METODE PENENTUAN Cd (II) DALAM PUPUK NPK SECARA SPEKTROFOTOMETRI SERAPAN ATOM NYALA DI LABORATORIUM UJI KUALITAS, PT. PUPUK KALIMANTAN TIMUR Leonardus Lewo Hayon; Alimuddin Alimuddin; Aman Sentosa Panggabean
JURNAL KIMIA MULAWARMAN Vol 19 No 1 (2021)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v19i1.898

Abstract

The research about validation method of determination of Cd (II) in NPK fertilizer by Flame Atomic Absorption Spectrophotometry at the Quality Control Laboratory, PT. Pupuk Kaltim has been done. Determination of Cd (II) was done by referring to the Indonesian National Standard (SNI) 2803:2012. Based on the research results obtained by the correlation coefficient (r) was 0.9991; reproducibility with a relative standard deviation (RSD) value was 4.502 % less than 2/3 CV Horwitz was 9.757 and repeatability with a relative standard deviation (RSD) value was 5.225% less than 2/3 CV Horwitz was 9.695; % recovery was in the range of 80-110 % with an average was 98.56 %; limit of detection was 0.056 mg/kg and limit of quantitation was 0,066 mg/kg; uncertainty estimation of measurement with uncertainty components of concentration, volume, mass, precision and purity of the standard solution, obtained the expanded uncertainty value with a 95 % confidence level was ± 0.197 mg/kg and uncertainty percentage value was 10.43 %.
STUDI KOMPUTASI INTERAKSI ZEOLIT LTA (LINDE TYPE A) DENGAN KATION ALKALI (LI+, NA+, K+) MENGGUNAKAN METODE MEKANIKA MOLEKULER Audi Zahid Iswaradi; Rahmat Gunawan; Noor Hindryawati
JURNAL KIMIA MULAWARMAN Vol 19 No 1 (2021)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v19i1.1012

Abstract

A study of computation on zeolite LTA (Linde Type A) interaction with alkaline cation (Li+, Na+, K+) using the mechanical molecular method was conducted. Data processing was conducted computationally using Hyperchem 7.0 with the mechanical molecular method. The result of the study showed zeolite LTA with ratio Si/Al 2,4286 has the lowest minimum energy. Furthermore, impregnation by cation Li+ increases structure stability, and impregnation by cation Na+ has the largest diameter window on Zeolite LTA.
PERBANDINGAN KINERJA ANALITIK HASIL PENENTUAN ION LOGAM Pb DENGAN MENGGUNAKAN SPEKTROFOTOMETER SERAPAN ATOM DI BERBAGAI LABORATORIUM SAMARINDA Arifin Syam Surya; Bohari Yusuf; Aman Sentosa Panggabean
JURNAL KIMIA MULAWARMAN Vol 19 No 1 (2021)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v19i1.909

Abstract

The study about the comparison of analytical performance of the determination of Pb metal ions using Atomic Absorption Spectrophotometer in various laboratories in samarinda has been conducted. The validated methods are linearity, detection limits, quantity and precision limits. The results showed, a standardized regression test obtained by laboratory A, a value of R2 ≥ 0.4103, laboratory B a value of R2 ≥ 0.983 and laboratory C, a value of R2 ≥ 0.000. The detection limit found at laboratory A was 0.6728 µg/L, laboratory B was 0.1989 µg/L and laboratory C was 0.0001 µg/L. The quantization limit obtained by laboratory A was 0.6817 µg/L, laboratory B was 0.6063 µg/L and laboratory C was 0.0001 µg/L. The precision test of laboratory A was 7.2208, laboratory B was 5.4557 and laboratory C was 0,000. The result of determining Pb of gas station soil samples in laboratory A is 0.737 µg/L and laboratory B is 0.391 µg/L, so that means they have exceeded the quality standards set by the Indonesian National Standard (INS).
STUDI SUHU TRANSISI GELAS PRODUK PENCANGKOKAN ANHIDRIDA MALEAT PADA KARET ALAM SIKLIS: METODE DIFFERENTIAL SCANNING CALORIMETRY Muhammad Said siregar; Enisa Cita Mentari; Desi Ardilla; Masura M D; Asmarasari Nasution; Eddiyanto Eddiyanto
JURNAL KIMIA MULAWARMAN Vol 19 No 1 (2021)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v19i1.1076

Abstract

Pada penelitian ini dilaporkan perubahan suhu transisi gelas produk pencangkokan anhidrida maleat pada karet alam siklis. Pencangkokan anhidrida maleat pada karet alam siklis dilakukan dalam fase leleh dengan penambahan komonomer divinil benzen di dalam pencampur internal suhu 185oC dan kecepatan rotor 85 rpm. Konsentrasi anhidrida maleat yang digunakan dalam proses pencangkokan adalah 16 phr, tanpa penambahan dan dengan penambahan komonomer divinil benzen dengan variasi: 0,5, 1 dan 2 mol rasio. Produk pencangkokan dikarakterisasi dengan Differential Scanning Calorimetry untuk mempelajari perubahan suhu transisi gelasnya. Berdasarkan analisis dan pengolahan data menggunakan software thermal analysis diperoleh bahwa semakin banyak penambahan komonomer divinil benzene maka suhu transisi gelasnya semakin tinggi, yaitu: 69,46oC, 69,51oC, 70,08oC dan 70,56oC.
SABUN CAIR EKONOMIS DENGAN PEMANFAATAN LIMBAH MINYAK JELANTAH Indica Septriyanti; Aisyah Meisya Putri; Herman Herman; Yelfira Sari
JURNAL KIMIA MULAWARMAN Vol 19 No 1 (2021)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v19i1.927

Abstract

Reducing Environmental pollution from household products that are used continuously, Processing waste cooking oil waste can be used to make innovations that benefit the community. Cooking oil that is used in excess of its use is called used cooking oil which is not well consumed by the body and has a negative impact on soil and air pollution. Processing of used cooking oil can be made as soap, one of which is liquid soap. Liquid soap is cleaner and more effective soap in packaging and usage.

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