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All Journal Jurnal Sains dan Teknologi Reaksi Jurnal Teknologi
Cut Aja Rahmahwati
Politeknik Negeri Lhokseumawe
Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology Mechanical Engineering

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Identifikasi Bahaya dan Risiko di Laboratorium SMKN 1 Tanah Luas Menggunakan Metode HIRA Sharie Suhaila Kyungsoo; Cut Aja Rahmahwati; Faridah Faridah
Jurnal Teknologi Vol 23, No 2 (2023): Oktober 2023
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v23i2.4143

Abstract

When carrying out practical activities carried out in the laboratory, the activity process does not always run as expected. There are times when the process experiences certain problems, one of which is that the practicum stops because the equipment is not functioning properly, causing accidents such as fires or explosions, students who carry out the practicum experience injuries that they get while carrying out the practicum in the laboratory. The purpose of risk assessment is to determine the possibility of occurrence and impact of an event that hinders the achievement of the organization's goals or objectives so that risks can be handled appropriately. This goal can be achieved through risk identification and risk analysis. The benefits of risk assessment include: helping to achieve organizational goals, maintaining continuity of service to stakeholders, providing services effectively and efficiently, being the basis for preparing strategic plans, and avoiding waste. The HIRA method was chosen because this method will identify, assess, and control dangerous risks that have the potential to occur in all work activities. This method can see how big the potential is and how serious it will be if the danger occurs. After identifying hazards using the HIRA method in the laboratory environment of SMK N 1 Tanah Luas. In calculating the level of possible hazards, the parameter for the frequency of occurrence of dangers in the High category is: every time the work is carried out. Medium category, namely: once in 10 to 100. Low category, namely once as long as the work is carried out.
MAKING EAU DE PARFUM FROM VANILLA AND PATCHOULI ESSENTIAL OILS BASED ON FRANGIPANI FLOWER ESSENTIAL OIL (PLUMERIA SP.) M Syahlung Siregar; Cut Aja Rahmahwati; S Syafruddin
Jurnal Sains dan Teknologi Reaksi Vol 24, No 01 (2026): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v24i01.9397

Abstract

This study aims to make Eau de Parfum based on frangipani (Plumeria sp.) essential oil by adding vanilla and patchouli essential oils as middle and base aromas. The frangipani essential oil was extracted using the soxhletation method using n-hexane as a solvent. The volume of frangipani essential oil used varied, namely 2.4 ml, 2.6 ml, 2.8 ml, 3 ml, and 3.2 ml, while the volume of vanilla essential oil varied, namely 1.2 ml, 1 ml, 0.8 ml, 0.6 ml, and 0.4 ml. The perfume formula was evaluated through specific gravity, aroma persistence, yield, composition (GC-MS), and organoleptic (homogeneity, clarity, and aroma) tests. The results showed that a volume of 3 ml of frangipani essential oil and 0.6 ml of vanilla essential oil produced the aroma most preferred by panelists, with an average specific gravity value of 0.82–0.83 g/ml, and an aroma that lasted up to 5 hours. GC-MS tests showed the presence of active compounds such as dimethyl phthalate, geranyl benzoate, and nerolidol which play a role in the stability and durability of the perfume aroma. Keywords: aroma, frangipani flower, Eau de Parfum, GC-MS, organoleptic
Co-Authors Faridah Faridah M Syahlung Siregar S Syafruddin Sharie Suhaila Kyungsoo