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Utami, Maisari
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Materials Science & Nanotechnology

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IDENTIFIKASI 11-NOR-Δ 9 -TETRAHYDROCANNABINOL-9-CARBOXYLIC ACID (THC-COOH) DALAM SAMPEL URIN MENGGUNAKAN INSTRUMEN GAS CHROMATOGRAPHY-MASS SPECTROMETRY (GC-MS) Utami, Maisari; Abdushshobir, Muhammad Fadhil; Tanti, Tanti
INDONESIAN JOURNAL OF CHEMICAL RESEARCH Vol. 9 No. 2 (2024): Volume 9, ISSUE 2,2024
Publisher : Chemistry Department, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijcr.vol9.iss2.art5

Abstract

“Narkoba” is known as an narcotics, psychotropics, and other addictive substances. Drugs are substances that can affect brain function and often cause dependence. One type of drug that is common in Indonesia is marijuana. Marijuana is a psychotropic that contains tetrahydrocannabinol (THC). When THC enters the human body, it will undergo a metabolic process and produce metabolites in the form of 11-nor-δ 9 -tetrahydrocannabinol-9-carboxylic acid (THC-COOH) which are then excreted in the urine. Urine identification can be used to prove someone's use of marijuana. Identification is carried out using urine from the National Narcotics Agency's Narcotics Laboratory Center to confirm the presence of THC-COOH using a Gas Chromatography-Mass Spectrometer (GC-MS). Urine identification is carried out with a preliminary rapid test and a confirmation test using a GC-MS instrument. The identification results showed that the urine was positive for THC-COOH.
Analisis Suhu, Derajat Keasaman (pH), Chemical Oxygen Demand (COD), dan Biologycal Oxygen Demand (BOD) dalam Air Limbah Domestik di Dinas Lingkungan Hidup Sukoharjo Ramadani, Randy; Samsunar, Sigit; Utami, Maisari
INDONESIAN JOURNAL OF CHEMICAL RESEARCH Volume 6, ISSUE 1, 2021
Publisher : Chemistry Department, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (582.888 KB) | DOI: 10.20885/ijcr.vol6.iss1.art2

Abstract

Air limbah domestik adalah air limbah yang berasal dari usaha dan atau kegiatan permukiman, rumah makan (restaurant), perkantoran, perniagaan, apartemen dan asrama yang berpotensi mencemari lingkungan. Hal tersebut disebabkan oleh nilai suhu, derajat keasaman (pH), Chemical Oxygen Demand (COD), dan Biologycal Oxygen Demand (BOD) yang tidak sesuai dengan Peraturan Menteri Lingkungan Hidup dan Kehutanan Republik Indonesia Nomor: P.68/Menlhk/Setjen/Kum.1/8/2016 Tentang Baku Mutu Air Limbah Domestik. Untuk mengatasi hal tersebut perlu dilakukan analisa limbah sebelum dibuang ke lingkungan. Analisis laboratorium terhadap sampel air limbah domestik dengan kode 063/AL/Lablingk_DLH/2021 meliputi penentuan suhu, pH, kadar COD dan BOD. Analisis suhu dilakukan dengan termometer, analisis pH dilakukan dengan pH meter, analisis COD dilakukan dengan menggunakan spektrofotometer UV-Vis dan analisis BOD dilakukan dengan metode titrasi iodometri. Hasil yang didapatkan adalah nilai suhu sebesar 25,95 oC, nilai pH sebesar 7,415, nilai COD sebesar 13,299 mg/L dan nilai BOD sebesar 1,512 mg/L. Hasil analisa suhu, pH, COD dan BOD menunjukkan angka dibawah ambang batas baku mutu limbah domestik.
Analisis Kadar Fenol dan Chemical Oxygen Demand (COD) pada Limbah Hasil Elektroplating Tinplate di PT Latinusa, Tbk Cilegon Pratiwi, Salsa Widya; Utami, Maisari
INDONESIAN JOURNAL OF CHEMICAL RESEARCH Volume 6, ISSUE 2, 2021
Publisher : Chemistry Department, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (328.259 KB) | DOI: 10.20885/ijcr.vol6.iss2.art3

Abstract

Penelitian ini bertujuan untuk menentukan nilai kadar fenol dan Chemical Oxygen Demand (COD) pada air buangan final proses pembuatan tinplate di laboratorium QA PT Latinusa, Tbk. Metode yang digunakan untuk analisis kadar fenol dan Chemical Oxygen Demand (COD) yaitu dengan menggunakan Spektrofotometer UV-Vis HACH pada panjang gelombang 500 nm. Analisis kadar fenol dilakukan dengan menggunakan reagen NH4OH, K3[Fe(CN)6] dan antipirin, sedangkan analisis COD dilakukan dengan menggunakan reagen A (K2Cr2O7, H2SO4 dan HgSO4) serta reagen B (Ag2SO4 dan H2SO4). Analisis dilakukan setiap hari dalam satu bulan. Dari hasil analisis yang dilakukan diperoleh rata-rata kadar fenol pada air buangan final yaitu sebesar 0,32 mgL-1 dan sudah memenuhi baku mutu setelah dilakukan retest pada tanggal 6, 17, 19 dan 23 sedangkan untuk nilai COD sebesar 28,15 mgL1 sudah memenuhi baku mutu sehingga tidak berbahaya bagi lingkungan maupun makhluk hidup jika dibuang ke lingkungan.
Analisis Kadar Total Dissolved Solid (TDS) dan Total Suspended Solid (TSS) Pada Limbah Cair Dari Industri Gula Tebu Khofifah, Khofifah; Utami, Maisari
INDONESIAN JOURNAL OF CHEMICAL RESEARCH Volume 7, ISSUE 1, 2022
Publisher : Chemistry Department, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijcr.vol7.iss1.art6

Abstract

Proses produksi pabrik gula memerlukan bahan baku air dalam jumlah yang besar dan hampir seluruhnya menjadi air limbah dengan material organik berupa bahan terlarut maupun bentuk tersuspensi dalam limbah cair. Penelitian ini bertujuan untuk menganalisis kadar Total Dissolved Solid (TDS) dan Total Suspended Solid (TSS) pada limbah cair industri gula dengan menggunakan metode gravimetri. Pada TDS air limbah yang telah homogen disaring dengan pompa vakum, filtrat yang lolos kemudian diuapkan sampai kisat lalu dikeringkan pada suhu 180 ◦C hingga beratnya konstan. Pada TSS air limbah yang telah homogen disaring dengan kertas saring 0,45 µm yang telah ditimbang, residu yang tertahan pada kertas saring dikeringkan pada suhu 103-105 ◦C hingga beratnya konstan. Kenaikan berat saringan itulah yang mewakili Padatan Tersuspensi Total (TSS). Hasil penelitian menunjukkan bahwa kadar TDS sebesar 1000 mg/L serta kadar TSS sebesar 10 mg/L. Berdasarkan hasil uji, dapat disimpulkan bahwa kadar TDS dan TSS telah memenuhi baku mutu yang ditetapkan oleh Peraturan Daerah Provinsi Daerah Istimewa Yogyakarta Nomor 7 Tahun 2016 tentang baku mutu air limbah untuk kegiatan industri gula (parameter TDS sebesar 2000 mg/L dan parameter TSS sebesar 50 mg/L).
Analisis Kadar Asam Lemak Bebas dan Kadar Air Pada Crude Palm Oil di Laboratorium PT. Bina Pitri Jaya Mill Rahmawati, Evi; Utami, Maisari
INDONESIAN JOURNAL OF CHEMICAL RESEARCH Volume 7, ISSUE 2, 2022
Publisher : Chemistry Department, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijcr.vol7.iss2.art4

Abstract

Analisis kadar asam lemak bebas dan kadar air telah dilaksanakan di Laboratorium PT. Bina Pitri Jaya Palm Oil Mill yang dilakukan pada bulan Maret 2022. Tujuan dari penelitian ini adalah mengetahui nilai kadar asam lemak bebas dan kadar air dalam sampel CPO di laboratorium PT. Bina Pitri Jaya Mill dan mengetahui nilai kadar asam lemak bebas dan kadar air dalam sampel CPO di laboratorium PT. Bina Pitri Jaya Mill dibandingkan dengan prosedur operasi standar Perusahaan Anglo-Eastern Plantations. Analisis kadar asam lemak bebas di lakukan dengan metode titrimetri, sedangkan kadar air di lakukan dengan metode thermogravimetri. Nilai kadar asam lemak bebas yang di peroleh sejak tanggal 1 Maret 2022 sampai 7 Maret 2022 secara berturut-turut yaitu 4,31%; 4,32%; 4,28%; 4,33%; 4,19%. Sedangkan nilai kadar air yang diperoleh berturut-turut yaitu 0,12%; 0,16%; 0,13%;0,15%; 0,14%. Hasil analisis kadar asam lemak bebas dan kadar air tersebut menunjukkan angka di bawah ambang batas baku mutu yaitu maksimum kadar asam lemak bebas dan air di dalam CPO adalah 5% dan 0,25%.
Pengujian Kadar Logam Nikel (Ni) pada Air Minum di Balai Laboratorium Kesehatan dan Pengujian Alat Kesehatan Provinsi Jawa Tengah Ramadani, Luthfia Sinta; Utami, Maisari
INDONESIAN JOURNAL OF CHEMICAL RESEARCH Volume 8, ISSUE 1, 2023
Publisher : Chemistry Department, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijcr.vol8.iss1.art1

Abstract

Penelitian tentang pengujian kadar nikel (Ni) pada air minum telah dilakukan. Penelitian ini bertujuan untuk menguji konsentrasi logam Ni pada sampel air minum. Metode analisis konsentrasi Ni mengacu pada SNI 6989-84 2019, pengujian kadar nikel (Ni) pada 10 sampel air minum dengan kode sampel AMK 47, AMK 50, AMK 51, AMK 53, AMK 54, AMK 55, AMK 56, AMK 59, AMK 60, dan AMK 61. Sampel air minum dilakukan preparasi terlebih dahulu dengan cara destruksi kemudian dianalisis menggunakan instrumen Spektrometri Serapan Atom (SSA)-nyala. Berdasarkan hasil pengujian, hasil kadar Ni pada sampel AMK 47, AMK 50, AMK 51, AMK 53, AMK 54, AMK 55, AMK 56, AMK 59, AMK 60, AMK 61 berturut turut sebesar 0,0007 mg/L; -0,0047 mg/L; -0,0065 mg/L; 0,0023 mg/L; -0,0021 mg/L; 0,0004 mg/L; -0,0036 mg/L; -0,0050 mg/L; -0,0013 mg/L; dan -0,0089 mg/L. Menurut hasil analisis, menunjukkan bahwa kadar Ni yang diperoleh berada di bawah batas maksimal yang ditentukan, yaitu 0,07 mg/L menurut PERMENKES No.492/MENKES/PER/IV/2010 sehingga dapat dikatakan kualitas air minum pada sampel telah memenuhi persyaratan kualitas air minum untuk uji logam Ni.
Analisis Lemak dan Asam Lemak Jenuh pada Jagung Rebus di Balai Besar Penelitian dan Pengembangan Pascapanen Pertanian Bogor Utami, Maisari; Azizah Zelia Kusumo; Danuwarsa
INDONESIAN JOURNAL OF CHEMICAL RESEARCH Vol. 8 No. 2 (2023): Volume 8, ISSUE 2,2023
Publisher : Chemistry Department, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijcr.vol8.iss2.art3

Abstract

Research on the testing of fat and saturated fatty acids of boiled corn has been carried out. This study aims to determine the quantity of fat and saturated fatty acids present in quantitatively analyzed boiled corn samples harvested from agricultural fields. The fat analysis was performed using the soxhlet extraction method, furthermore, the analysis of saturated fatty acids was performed using gas chromatography with Flame Ionization Detector (FID) as the detector. Based on the results of the test that has been carried out, the average fat content obtained using sohxlet extraction method from two different samples of corn which was repeated two times was 0,57%, this result were 0,58% from boiled corn samples I (simplo), 0,51% from boiled corn I (duplo), 0,60% boiled corn samples II (simplo), and 0,59% from boiled corn II (duplo). Furthermore, the total amount of saturated fatty acids obtained using the gas chromatography method was 20,43%, with the respective contents of 0.05% of myristic acid, 0.12% of lauric acid, and 20.26% of palmitic acid.
Penentuan Kadar Karbon Organik pada Sampel Tanah Menggunakan Metode Walkley & Black Khusnah, Asma’ul; Pawestri, Niken; Utami, Maisari
INDONESIAN JOURNAL OF CHEMICAL RESEARCH Vol. 10 No. 2 (2025): Volume 10, ISSUE 2, 2025
Publisher : Chemistry Department, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijcr.vol10.iss2.art2

Abstract

Determination of C-organic content in soil using the Walkley & Black method with a UV-Vis spectrophotometer was conducted at the Agricultural Instrument Standards Application Center in Yogyakarta. The samples used in this experiment were soil samples. The analysis method used was the Walkley & Black method with a UV-Vis spectrophotometer. This method works based on the principle of wet oxidation using potassium dichromate (K₂Cr₂O₇) and sulfuric acid (H₂SO₄), where the remaining unreacted dichromate ions are measured using a spectrophotometer at a wavelength of 587 nm. The analysis results showed that the organic C content in the five soil samples ranged from 1.096% to 3.866%, classified from low to high. The variation in organic C content was influenced by environmental factors such as depth, soil texture, and drainage conditions. This analysis is important for determining soil fertility levels and supporting sustainable agricultural land management.
Penetapan Fosfor Tersedia pada Sampel Tanah Menggunakan Metode Olsen & Bray I Nur Kholifah, Azzahra; Pawestri, Niken; Utami, Maisari
INDONESIAN JOURNAL OF CHEMICAL RESEARCH Vol. 10 No. 2 (2025): Volume 10, ISSUE 2, 2025
Publisher : Chemistry Department, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijcr.vol10.iss2.art3

Abstract

Quantitative analysis was conducted on seven soil samples to determine available phosphorus (P), an essential macronutrient for plant growth and development. This study aimed to compare the effectiveness of two extraction methods, Olsen and Bray I, in measuring phosphorus availability in soils with different chemical characteristics, as well as to provide an overview of soil fertility levels based on the obtained results. The available P content was measured using the Olsen & Bray I methods with a single-beam UV-Visible spectrophotometer. Four soil samples (TH.2278, TH.2279, TH.2280, and TH.2281) were analyzed using the Olsen method, while three samples (TH.2267, TH.2268, and TH.2269) were analyzed using the Bray I method. Based on the Olsen method, samples TH.2278 and TH.2279 contained 34.8270 ppm and 50.5795 ppm P₂O₅, respectively, both classified as very high. In contrast, sample TH.2280 showed a concentration of 3.9325 ppm (very low category), and sample TH.2281 had 8.9920 ppm (low category). Using the Bray I method, sample TH.2267 contained 39.9138 ppm P₂O₅ (very high category), while TH.2268 and TH.2269 contained 1.7534 ppm and 5.3627 ppm, categorized as very low and low, respectively. Overall, three samples (TH.2278, TH.2279, and TH.2267) exhibited very high levels of available phosphorus, while samples TH.2280, TH.2281, TH.2268, and TH.2269 fell within the low to very low categories. These findings indicate that phosphorus availability is strongly influenced by soil chemical conditions, with the Olsen method being more suitable for neutral to alkaline soils and the Bray I method being more responsive to acidic soils. For soils with very high phosphorus levels, phosphate fertilization should be temporarily discontinued to prevent nutrient imbalance and environmental risks. Conversely, soils with low phosphorus levels require regular monitoring and periodic phosphate fertilization to maintain adequate soil fertility.
Co-Authors Abdushshobir, Muhammad Fadhil Azizah Zelia Kusumo Danuwarsa Evi Rahmawati Khofifah Khofifah Khusnah, Asma’ul Meitasari, Eryani Ayu Nur Kholifah, Azzahra Pawestri, Niken Pratiwi, Salsa Widya Ramadani, Luthfia Sinta Ramadani, Randy Samsunar, Sigit Tanti Tanti Tanti