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Journal of Forensic Expert
Published by Pusat Laboratorium Forensik Badan Reserse Kriminal Kepolisian Negara Republik Indonesia
ISSN : -     EISSN : 28085248     DOI : https://doi.org/10.54579/jfe
Core Subject : Science, Social, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Law, Crime, Criminology & Criminal Justice
Journal of Forensic Expert is the official publication of Pusat Laboratorium Forensik (Puslabfor) Badan Reserse Kriminal (Bareskrim) Kepolisian Negara Republik Indonesia. It is devoted to the publication of scientific crime investigation include document examination, ballistics, explosive, restoration of vehicle identification numbers, fire and arson, accident and failure analysis, tool mark and trace evidence, polygraph, digital forensic, forensic chemistry, forensic toxicology and environment, forensic biology and drug testing and analysis. Similar submissions deal with forensic aspects of other sciences, as are submissions dealing with scientifically sound emerging science disciplines. All manuscript submissions are double-blind peer-reviewed.
Arjuna Subject : Umum - Umum
Articles 13 Documents
 1   2 
OPTIMALISASI WAKTU DAN SUHU INKUBASI PADA PEMERIKSAAN GOLONGAN DARAH METODE ABSORPSI-ELUSI Irwamati Masse
Journal of Forensic Expert Vol. 2 No. 1 (2022): JOURNAL OF FORENSIC EXPERT
Publisher : Pusat Laboratorium Forensik adan Reserse Kriminal Kepolisian Negara Republik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2442.709 KB) | DOI: 10.54579/jfe.v2i1.18

Abstract

ABSTRACT One of the identifications done to help identify criminals is by examining the substance of the blood group. In some cases of death, identification of the blood type substance is closely related to the compatibility of the blood group on the evidence of the victim or perpetrator. Hair, dry blood and saliva are often found at crime scenes, so the substance of the blood group can be checked. Most cases of crimes with physical violence, such as murder, assault, rape, may find blood, semen, saliva, urine, hair and other body tissues at the crime scene (TKP). The material can come from the victim, the perpetrator of the crime, or from both, which can be used to scientifically reveal the events of the crime. Forensic identification is an effort made with the aim of helping investigators to determine a person's identity. To support the implementation of the main tasks and functions of the Forensic Laboratory Sector, a validated examination method is needed. thus providing accurate and reliable results. Examination of blood type on samples/evidence of dry blood with absorption-elution method by optimizing time and temperature can give results within 1 day, the initial incubation process is in a freezer at 0oC for 15 minutes then continued in a refrigerator at 4oC for 4 hours, after the addition of erythrocytes at the final incubation stage, the samples/evidence were incubated in a freezer at 0oC for 15 minutes then followed by a temperature of 4oC for hour. The results of the examination are acceptable and can be used as a valid and accurate method so that improved services to regional investigators are provided optimally, quickly, accurately and accountably in supporting a fair investigation process. ABSTRAK Salah satu identifikasi yang dilakukan untuk membantu mengetahui pelaku kriminal adalah dengan memeriksa substansi golongan darah. Pada beberapa kasus kematian, identifikasi substansi golongan darah erat kaitannya dengan kecocokan golongan darah pada barang bukti korban atau pelaku. Rambut, darah kering dan saliva sering ditemukan di TKP dapat dilakukan pemeriksaan substansi golongan darah. Kebanyakan kasus kejahatan dengan kekerasan fisik, seperti pembunuhan, penganiayaan, perkosaan, mungkin ditemukan darah, cairan mani, air liur, urin, rambut dan jaringan tubuh lain di tempat kejadian perkara (TKP). Bahan tersebut dapat berasal dari korban, pelaku kejahatan, atau dari keduanya, yang dapat digunakan untuk mengungkapkan peristiwa kejahatan tersebut secara ilmiah. Identifikasi forensik merupakan upaya yang dilakukan dengan tujuan membantu penyidik untuk menentukan identitas seseorang. Untuk mendukung penyelenggaraan tugas pokok dan fungsi Bidang Laboratorium Forensik tersebut diperlukan suatu metode pemeriksaan yang sudah tervalidasi. sehingga memberikan hasil yang akurat dan dapat dipercaya. Pemeriksaan golongan darah pada sampel/barang bukti darah kering metode absorpsi-elusi dengan optimalisasi waktu dan suhu dapat memberikan hasil dalam waktu 1 hari, proses inkubasi awal dalam freezer suhu 0oC selama 15 menit kemudian dilanjutkan dalam lemari pendingin suhu 4oC selama 4 jam saja, setelah penambahan eritrosit pada tahapan inkubasi akhir, sampel/barang bukti di inkubasi didalam freezer suhu 0oC selama 15 menit kemudian dilanjutkan dengan suhu 4oC selama ½ jam. Hasil pemeriksaan dapat diterima dan dapat digunakan sebagai metode yang valid dan akurat sehingga peningkatan pelayanan kepada penyidik kewilayahan diberikan secara optimal, cepat, akurat dan akuntable dalam mendukung proses penyidikan yang berkeadilan.
ANALISIS KEBAKARAN TANGKI TIMBUN TIPE ALUMINIUM GEODESIC DOME ROOF tatang kukuh wibawa
Journal of Forensic Expert Vol. 2 No. 1 (2022): JOURNAL OF FORENSIC EXPERT
Publisher : Pusat Laboratorium Forensik adan Reserse Kriminal Kepolisian Negara Republik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6459.324 KB) | DOI: 10.54579/jfe.v2i1.21

Abstract

ABSTRACT A Storage tank at oil refinery caught fire on Saturday, November 13, 2021 at 20.00 Wib. The burnt tank with a capacity of about 31,000 kiloliters (kl) was fully filled, the impact caused by the fire was in the form of direct losses, damage to surrounding infrastructure and other losses. The research method is to examine the level of damage to the condition of the storage tank due to fire by examining the parts of the tank to determine the location of the first fire location. The second is to carry out a thorough inspection of data and technical information on the tank, operations and systems. The third is carrying out inspection and data analysis, technical information on the installed tank, testing and measuring in the tank. Then the four carry out an analysis of the fire process and conclude from the overall results of the inspection.The results of the fire/explosion was the ignition of Pertalite type hydrocarbon liquid vapor which had reached the flammable range and the explosion limit in the Northwest Part of the Aluminum Geodesic Dome Roof Tank by a lightning strike which could cause tear/melt on the Aluminum Geodesic Dome Roof and damage to the Seal (Seal Hub Cover Gusset and Batten Gasket Sturt) Tank and the inability of the bounding grounding system of the roof cover to the wall and GT (Ground Tank) 1-8 transferring lightning strike currents. ABSTRAK Sebuah tangki pada kilang minyak terbakar pada Sabtu, 13 November 2021 pukul 20.00 Wib. Tangki yang terbakar dengan kapasitas sekitar 31.000 kiloliter (kl) terisi penuh, dampak yang diakibatkan kebakaran berupa kerugian langsung, kerugian infrastruktur sekitar yang terdampak dan kerugian lainnya. Metode penelitian ini pertama melakukan pemeriksaan tingkat kerusakan kondisi tangki timbun akibat kebakaran dengan memeriksa bagian-bagian tangki untuk menentukan lokasi api pertama kebakaran. Kedua melaksanakan pemeriksaan data dan keterangan teknis menyeluruh terhadap tangki, operasional dan sistem nya. Ketiga melaksanakan pemeriksaan dan analisa data keterangan teknis terhadap tangki yang terpasang, pengujian dan pengukuran di tangki. Kemudian keempat melaksanakan analisa proses terjadinya kebakaran dan menyimpulkan dari keseluruhan hasil pemeriksaan. Hasil penelitian disimpulkan penyebab terjadinya kebakaran/ledakan adalah tersulutnya uap cairan hidrokarbon jenis Pertalite yang sudah mencapai batas mudah terbakar (flammable range) dan explosion limit di Bagian Barat Laut pada Aluminium Geodesic Dome Roof Tangki Timbun oleh sambaran petir yang dapat menyebabkan sobekan/pelelehan pada Aluminium Geodesic Dome Roof dan kerusakan pada Seal (Seal Hub Cover Gusset dan Batten Gasket Sturt) Tangki Timbun serta ketidakmampuan sistem bounding grounding tutup atap terhadap dinding GT (Ground Tank) 1-8 dalam mentransfer arus sambaran petir.
PENGUJIAN SELEKTIVITAS UJI KOLORIMETRI ( FAST BLUE B SALT) UNTUK IDENTIFIKASI METAMFETAMINA (MA) DAN METILENDIOKSIMETAMFETAMINA (MDMA) DALAM URINE DENGAN TLC, HPTLC DAN GCMS supiyani; Ungkap Siahaan; Debora M. Hutagaol
Journal of Forensic Expert Vol. 2 No. 1 (2022): JOURNAL OF FORENSIC EXPERT
Publisher : Pusat Laboratorium Forensik adan Reserse Kriminal Kepolisian Negara Republik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3107.181 KB) | DOI: 10.54579/jfe.v2i1.24

Abstract

ABSTRACT This study examined the use of Fast Blue B Salt (FBBS) spray as a semi-confirmed colorimetric test in the urine examination of suspected Methamphetamine (MA) and Methylenedioxymethamphetamine (MDMA) narcotic suspects. The application of spray of Fast Blue B Salt with a concentration of 1000 ppm on urine extract which was spotted on an HPTLC silica gel 60 F254 plate was carried out at room temperature with eluent of Ethyl acetate: Methanol: Ammonia (8.5: 1: 0.5) with solvent of Chloroform: Isopropanol (1: 1) by using CRM MA and CRM MDMA comparison. The presence of MA and MDMA in the suspect's urine was identified by the appearance of a color on the TLC (Thin Layer Chromatography) plate, namely a yellowish orange color for positive MA with an Rf of 0.63 { on trak1 (urine 9416) and trak3 (urine 9577)} and a dark yellowish violet color for MDMA positive with Rf 0.67 { on track 2 (urine 9768A1) and track 4 (urine 9768B)} where the color and Rf of the compound are the same as the comparison color for track 5 (CRM MA) and track 6 (CRM MDMA). The selectivity of the new FBBS colorimetric test method for the color of MA and MDMA compounds on TLC plates was confirmed using HPTLC (High Performance Thin Layer Chromatography) and GCMS (Gas Chromatography Mass Spectroscopy). HPTLC and GCMS confirmation results on TLC plates that were previously Ma positive (urine 9416 and urine 9577) were confirmed to be positive for MA at 215 nm and 260 nm and Rt 3.6 MS m/z (149, 134, 91,58), as well as previously positive for MDMA (urine 9768A1 and urine 9768B) confirmed to be positive for MDMA at λ 215 nm, 240 nm and 280 nm and Rt 6.3 MS m/z (193, 178, 135, 89, 58). The occurrence of specific colors of MA compounds with yellowish orange color and dark violet-yellow MDMA by a new colorimetric test method (Fast Blue B Salt spray) can be tested for selectivity by TLC, HPTLC and GCMS. ABSTRAK Penelitian ini tentang penggunaan spray Fast Blue B Salt (FBBS) sebagai uji kolorimetri semi konfirmasi dalam pemeriksaan urine tersangka pengguna narkotika jenis Metamfetamina (MA) dan Metilendioksimetamfetamina (MDMA). Pengaplikasian spray Fast Blue B Salt konsentrasi 1000 ppm pada ekstrak urine yang ditotolkan pada plat HPTLC silica gel 60 F254 dilakukan pada suhu kamar dengan eluen Etil asetat : Metanol : Amoniak (8,5: 1 : 0,5) dengan pelarut Kloroform: Isopropanol (1 : 1) dengan menggunakan pembanding CRM MAdan CRM MDMA. Adanya MA dan MDMA didalam urine tersangka diidentifikasi dengan munculnya warna pada plat TLC (Thin Layer Chromatography) yaitu warna orange kekuningan untuk positif MA dengan Rf 0,63 { pada trak1 (urine 9416) dan trak3 (urine 9577)} dan warna violet tua kekuningan untuk positif MDMA dengan Rf 0,67 { pada trak 2 (urine 9768A1) dan trak 4 ( urine 9768B)} dimana warna dan Rf senyawa tersebut sama dengan warna pembanding trak 5 (CRM MA) dan trak 6 (CRM MDMA). Keselektivan metode baru uji kolorimetri FBBS terhadap warna senyawa MA dan MDMA pada plat TLC diuji konfirmasi dengan menggunakan HPTLC (High Performance Thin Layer Chromatography) dan GCMS (Gas Chromatography Mass Specrtroscopy). Hasil konfirmasi HPTLC dan GCMS terhadap plat TLC yang sebelumnya positif Ma (urine 9416 dan urine 9577) terkonfirmasi benar positif MA pada λ 215 nm dan 260 nm dan Rt 3,6 MS m/z ( 149, 134, 91,58), begitupun sebelumnya positif MDMA (urine 9768A1 dan urine 9768B) terkonfirmasi benar positif MDMA pada λ 215 nm, 240 nm dan 280 nm dan Rt 6,3 MS m/z ( 193, 178, 135, 89, 58 ). Munculnya warna spesifik senyawa MA warna orange kekuningan dan MDMA warna violet tua kekuningan oleh metode baru uji kolorimetri (spray Fast Blue B Salt) dapat diuji keselektivannya dengan TLC, HPTLC dan GCMS.

Page 2 of 2 | Total Record : 13

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