Pemeriksaan Profil Darah Pada Pekerja Sebagai Upaya Deteksi Dini Gangguan Kesehatan Akibat Paparan Uap Benzene di Industri Percetakan

ABSTRAK Berdasarkan penelitain sebelumnya diketahui bahwa lokasi kegiatan pengabdian masyarakat, didapatkan hasil pengukuran kadar uap benzene dilingkungan kerja dengan kisaran 0,3-1,5 ppm. Anemia aplastik yang disebabkan oleh penekanan sumsum tulang adalah penyebab klasik kematian akibat keracunan benzena kronis. Tujuan dari kegiatan ini adalaha untuk melakukan pemeriksaan profil darah pekerja yang terpapar benzene dilingkungan kerjanya sebagai upaya antisipasi dan deteksi dini penyakit akibat paparan benzene. Kegiatan pemeriksaan profil darah dilakukan dengan menerapkan protokol Kesehatan. Pengambilan dan anlisa profil darah dilakukan oleh laboratorium yang kompeten. Jumlah pekerja yang terlibat dalam kegiatan ini sebanyak 10 pekerja dengan jenis kelamin laki-laki dengan kriteria pekerja yang terpapar langsung dengan uap benzene dilingkungan kerjanya. Hasil dari pemeriksaan 10 orang pekerja didapatkan hasil leukosit 6,97 ± 0,8, hemoglobin 15,3 ± 0,92 dan trombonist 212,1 ± 25,07. Kegiatan pengabdian masayarakat berjalan sesuai dengan jadwal yang telah direncanakan. Hasil pemeriksaan profil darah pada 10 pekerja masih dalam batas nilai rujukan. Kata Kunci : benzene, profil darah, industri percetakan ABSTRACT Based on previous research, it is known that the location of community service activities, the results of measurements of benzene vapor levels in the work environment are in the range of 0.3-1.5 ppm. Aplastic anemia caused by bone marrow compression is the classic cause of death from chronic benzene poisoning. The purpose of this activity is to examine the blood profile of workers exposed to benzene in their work environment to anticipate and detect diseases due to benzene exposure. Blood profile examination activities were carried out by applying the Covid Health protocol 19. Blood profile collection and analysis were carried out by a competent laboratory. The number of workers involved in this activity was 10 workers of the male gender with the criteria that workers were directly exposed to benzene vapor in their work environment. The results of the examination of 10 workers showed leukocytes 6.97 ± 0.8, hemoglobin 15.3 ± 0.92, and trombone 212.1 ± 25.07. Community service activities go according to the planned schedule. The results of blood profile examinations on 10 workers are still within the reference value limit. Keywords: benzene, blood profile, printing industry

Benzene Exposure on Rig X from Drilling Fluid and Effectiveness of Local Exhaust Ventilation

Introduction: Benzene is a carcinogenic compound commonly found in drilling fluid, a chemical used in oil and gas drilling operations. Benzene exposure to workers is known to cause acute and/or chronic disease. Adequate control measures shall be identified and implemented to prevent the adverse health effects of benzene from the utilization of drilling fluid. Methods: This study measured benzene concentrations at several locations, above the drilling rig, which has the potential risk of benzene vapor exposure. From the measurement results, if the threshold limit value was exceeded, LEV was proposed to be installed and the effectiveness of LEV at each location would be assessed. A two-tailed t-test was used with a confidence level of 95% (α=0.05) to measure the effectiveness of LEV. Results: In several areas, benzene concentration exceeded TLV-TWA, and LEV was installed in those areas as control measures. In this study, it was found that LEV was not always effective in reducing the concentration of benzene in some areas. Conclusion: Drilling fluid was essential for drilling activity, and this could cause benzene vapor to contaminate the working area. The installation of the LEV shall consider the type of containment through which the drilling fluid flows to ensure the mitigation measures are effective to reduce the concentration of benzene in the air that may be exposed to workers.Keywords: benzene, drilling fluid, exhaust ventilation

Preparation and Gas Sensing Properties of PANI/SnO2 Hybrid Material

A sensor operating at room temperature has low power consumption and is beneficial for the detection of environmental pollutants such as ammonia and benzene vapor. In this study, polyaniline (PANI) is made from aniline under acidic conditions by chemical oxidative polymerization and doped with tin dioxide (SnO2) at a specific percentage. The PANI/SnO2 hybrid material obtained is then ground at room temperature. The results of scanning electron microscopy show that the prepared powder comprises nanoscale particles and has good dispersibility, which is conducive to gas adsorption. The thermal decomposition temperature of the powder and its stability are measured using a differential thermo gravimetric analyzer. At 20 °C, the ammonia gas and benzene vapor gas sensing of the PANI/SnO2 hybrid material was tested at concentrations of between 1 and 7 ppm of ammonia and between 0.4 and 90 ppm of benzene vapor. The tests show that the response sensitivities to ammonia and benzene vapor are essentially linear. The sensing mechanisms of the PANI/SnO2 hybrid material to ammonia and benzene vapors were analyzed. The results demonstrate that doped SnO2 significantly affects the sensitivity, response time, and recovery time of the PANI material.

Benzene extraction in environmental samples based on the mixture of nanoactivated carbon and ionic liquid coated on fused silica fiber before determination by headspace solid-phase microextraction-gas chromatography

In this study, the mixture of nano activated carbon (NAC) and ionic liquid (3-triphenylphosphonio-propane-1-sulfonate; C21H21O3PS) was coated on fused silica fiber of SPME holder (NAC-IL-FSF/SPME). Then NAC/IL was used for determining of benzene in soil and vegetables samples (1.0 g, n=50) surrounding a chemical industry zone. After benzene adsorption on NAC-IL based on head space solid phase micoextraction (HS-SPME), the concentration of benzene was simply determined by introducing probe to injector of gas chromatography with flame-ionization detection (GC-FID). All effected parameters such as the sorbent mass, the amount of sample, the temperature, and the interaction time were optimized in glass chromatography vials by static procedures. The benzene vapor was absorbed from soil and vegetables samples with NAC-IL-FSF/SPME holder for 10 min at 80oC (10 mg of NAC and 0.1 g of ionic liquid in 0.5 mL of acetone coated on FSF). Then the benzene was desorbed and determined by GC-FID spectrometry. The extraction efficiency and absorption capacity of adsorbent were obtained 98.5% and 127.2 mg g-1, respectively. The high surface area of NAC and favorite interaction of aromatic chain in IL (π-π), caused to efficiently remove of benzene vapor by HS-SPME procedure as compared to other nanostructures.

High Performance Benzene Vapor Sensor Based on Three-Dimensional Photonic Crystals of Zeolitic Imidazolate Framework-8@Graphene Quantum Dots

Superiorly sensitive, selective, and repetitive real-time detecting the low concentration benzene vapor is vitally important in environmental protection and human health. The zeolitic imidazolate framework-8@graphene quantum dots (ZIF-8@GQDs) based three-dimensional...