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All Journal Jurnal Sains Teknologi dan Lingkungan (JSTL) KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA Jurnal Pengabdian Magister Pendidikan IPA Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal)
Alhadawiah, Sabila
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Agriculture, Biological Sciences & Forestry Chemistry Computer Science & IT Education Physics Public Health

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Development of a VOC (Volatile Organic Compound) Measurement System to Identify Placebo Phenomenon in Emission Areas Alhadawiah, Sabila; Wirawan, Rahadi; Budianto, Arif
KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA Vol 9 No 02 (2024): KONSTAN (Jurnal Fisika dan Pendidikan Fisika)
Publisher : Universitas Islam Negeri (UIN) Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/konstan.v9i02.582

Abstract

VOCs (volatile organic compounds) can be used as a biomarker of placebo phenomenon, such as stress, panic disorder, health conditions, and many others. VOCs from the exhaled breath have different concentration levels that are also related to many health diseases. However, the use of VOCs as biomarkers in exhaled breath are very limited. Hence, this study aims to develop a novel e-nose (electric nose) system based on a VOC measurement system to identify placebo phenomenon in emission areas. For this purpose, a digital semiconductor VOC sensor and a microcontroller were used to detect VOC level. The developed system was tested inside a chamber for the initial calibration and comparation steps using fresh air and a comparator device. After calibration, the system was used to measure the VOC concentrations of 20 exhaled breath samples in the emission sampling areas (control and emission sources). In other sides, the VOC levels surrounding the emission areas were also measured using the comparator device. The placebo levels (PLS) of the exhaled breath samples were divided into PLS(-) or placebo negative and PLS(+) or placebo positive related to the placebo conditions. The sampling areas were divided into indoor and outdoor areas to identify the different placebo percentages and the dependence related to the emission levels. The results show that the emission levels of the emission sources are about 504-528 ppb, meanwhile, the control area (clean area) has <10 ppb of VOC levels. A higher VOC concentration, a higher PLS(+) percentage. The exhaled breath of PLS(+) samples contain >78 ppb of VOC levels, while PLS(-) samples has < 78 ppb of VOC levels (p < 0.05). It can be concluded that VOC concentrations in the emission sources has a potential to influence the placebo quantification in human psycological health. The developed e-nose system can be used to identify VOC levels as a biomarker of a placebo phenomenon.
Pembuatan Profil Udara Hembusan Pernapasan Perokok dan Non Perokok Berbasis Sensor CCS-811 dan Volatile Organic Compound Alhadawiah, Sabila; Budianto, Arif; Wirawan, Rahadi; Anggriani, Ni Ketut
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 6 No. 1 (2025): Februari
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v6i1.506

Abstract

VOC merupakan sekelompok senyawa organik yang mudah menguap ke atmosfer dan mempunyai berbagai dampak terhadap kesehatan manusia dan lingkungan. VOC merupakan faktor penting dalam pembentukan ozon troposfer dan aerosol organik sekunder, yang menjadi komponen utama pembentukan polusi udara. VOC dapat terkandung di dalam udara sisa pernapasan manusia, dengan konsentrasi yang berbeda-beda dan sangat bergantung dengan kondisi metabolisme tubuh, kebiasaan, makanan yang dikonsumsi, dan lain sebagainya. Oleh sebab itu, penelitian ini bertujuan untuk mengidentifikasi konsentrasi TVOC dari udara hembusan nafas (exhaled breath) yang kemudian dijadikan sebagai profil udara yang dapat membedakan klasifikasi perokok atau non perokok. Penelitian ini menggunakan 50 sampel nafas yang dibagi ke dalam dua klasifikasi utama, yakni perokok dan non perokok. Udara bersih terfilter digunakan sebagai variabel kontrol. Sampel nafas diukur konsentrasi VOC menggunakan sebuah e-nose berbasis sensor CCS-811 yang sudah dikalibrasi dan diuji menggunakan komparator dan beberapa gas, seperti: gas karbon dioksida (CO2), hidrogen sulfida (H2S), etanol (C2H5OH), dan formaldehida (CH2O). Hasil penelitian menunjukkan bahwa sistem e-nose berbasis sensor CCS-811 dapat membaca gas VOC dengan rata-rata pembacaan yang dihasilkan sebesar 0-1156 ppb dengan tingkat kesalahan relatif <50%. Keseluruhan hasil pengujian ini menunjukkan bahwa sistem cukup sensitif terhadap gas CH2O dan C2H5OH, namun tidak sensitif terhadap gas CO2 dan H2S. Berdasarkan pada hasil penelitian, dapat disimpulkan bahwa sistem dapat secara sensitif dan selektif mendeteksi senyawa VOC pada jenis C2H5OH dan CH2O dengan nilai akurasi >50%. Hasil pembacaan sistem pada sampel nafas perokok dan non perokok dapat menghasilkan tiga zona konsentrasi TVOC yang selanjutnya menjadi profil has TVOC yang dihembuskan oleh kelompok sampel. Terdapat perbedaan yang cukup signifikan antara konsentrasi TVOC perokok dan non perokok. Sistem dapat membedakan antara perokok dan non perokok dengan akurasi pembacaan >90%.
VOCs (Volatile Organic Compounds) Concentration Measurement in Human-Exhaled Breath - A Preliminary Study: Measurement of VOC Levels in Human-Exhaled Breath Hadi, Kasnawi Al; Budianto, Arif; Alhadawiah, Sabila; Fidya, Karina Alma; Rahayu, Satutik
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 4 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i4.728

Abstract

VOC is a group of organic compounds that easily evaporate into the atmosphere and have various impacts on human health and the environment. Human exhaled breath and VOC is related to each other. The concentration of VOC differs from an abnormal condition to other abnormalities. However, there is limited information or study about VOC concentration in human exhaled breath. In line with this, this study aims to develop a VOC meter or a measurement system using a CCS811 sensor for human exhaled breath. This study used a CCS811 sensor, a microcontroller, and a suction pump installed inside a sensor box. The system was calibrated using filtered and non-filtered air. The system was tested using varying flow rates. At the final test, the system was tested to measure VOC levels in human exhaled breaths. The results show that the VOC measurement system can measure VOC levels in different air conditions for both filtered and non-filtered air. The use of different flow rates influences the system's performance. The highest sensitivity level is obtained at 0.7 m/s of the flow rate of the suction pump. The system was also able to measure VOC concentrations of the human exhaled breath with concentrations of 0 ppb to 1156 ppb. The VOC concentrations of human exhaled breath depend on many factors that should be further analyzed, including the medical treatment history, food consumption, placebo effect, and many other parameters.
Sosialisasi Peningkatan Nilai Tambah Produk Hortikultura Over Supply di Desa Sembalun Timba Gading Suliartini, Ni Wayan Sri; Rizki, Rama; Alhadawiah, Sabila; Arafah, Putri Nurul
Jurnal Pengabdian Magister Pendidikan IPA Vol 8 No 2 (2025): April-Juni 2025
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmpi.v8i2.11412

Abstract

Sembalun Timba Gading is a village located at the foot of Mount Rinjani. This village has an agroclimate that is suitable for cultivating horticultural crops and is a center for vegetable and fruit production in East Lombok. Abundant production during the harvest season causes prices to drop drastically, while these products spoil quickly so they cannot be stored for long. This results in losses for farmers. Therefore, processing of agricultural products is needed, especially horticulture, which can increase the shelf life and selling value of the product. On the other hand, the lack of knowledge and skills of farmers causes horticultural products to be sold as fresh products. Farmers' knowledge and skills about processing horticultural products need to be improved through socialization and training. The initial step in increasing knowledge is needed through socialization activities. The Mataram University community service team carried out community service in the form of socialization of increasing the added value of oversupply horticultural products in Sembalun Timba Gading Village. The target partners are the Ndak Kuta Farmer Group and the Kali Empit Farmer Group which are engaged in the cultivation of horticultural and plantation crops. The method used in this socialization activity is counseling with material presentation by resource persons and continued with a discussion session. The socialization activity went smoothly. Participants were very enthusiastic about participating in the activity because they considered the material provided to be very useful for improving the quality of agricultural products and increasing the selling value of products. The understanding of target partners about horticultural product processing increased as evidenced by the active participants asking questions and the results of group discussion assignments which resulted in four types of product processing that were decided to be pursued, namely making mashed potato chips, making chili flour, making chili sauce, and making shallot oleoresin.
Pembuatan Profil Udara Hembusan Pernapasan Perokok dan Non Perokok Berbasis Sensor CCS-811 dan Volatile Organic Compound Alhadawiah, Sabila; Budianto, Arif; Wirawan, Rahadi; Anggriani, Ni Ketut
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 6 No. 1 (2025): Februari
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v6i1.506

Abstract

VOC merupakan sekelompok senyawa organik yang mudah menguap ke atmosfer dan mempunyai berbagai dampak terhadap kesehatan manusia dan lingkungan. VOC merupakan faktor penting dalam pembentukan ozon troposfer dan aerosol organik sekunder, yang menjadi komponen utama pembentukan polusi udara. VOC dapat terkandung di dalam udara sisa pernapasan manusia, dengan konsentrasi yang berbeda-beda dan sangat bergantung dengan kondisi metabolisme tubuh, kebiasaan, makanan yang dikonsumsi, dan lain sebagainya. Oleh sebab itu, penelitian ini bertujuan untuk mengidentifikasi konsentrasi TVOC dari udara hembusan nafas (exhaled breath) yang kemudian dijadikan sebagai profil udara yang dapat membedakan klasifikasi perokok atau non perokok. Penelitian ini menggunakan 50 sampel nafas yang dibagi ke dalam dua klasifikasi utama, yakni perokok dan non perokok. Udara bersih terfilter digunakan sebagai variabel kontrol. Sampel nafas diukur konsentrasi VOC menggunakan sebuah e-nose berbasis sensor CCS-811 yang sudah dikalibrasi dan diuji menggunakan komparator dan beberapa gas, seperti: gas karbon dioksida (CO2), hidrogen sulfida (H2S), etanol (C2H5OH), dan formaldehida (CH2O). Hasil penelitian menunjukkan bahwa sistem e-nose berbasis sensor CCS-811 dapat membaca gas VOC dengan rata-rata pembacaan yang dihasilkan sebesar 0-1156 ppb dengan tingkat kesalahan relatif <50%. Keseluruhan hasil pengujian ini menunjukkan bahwa sistem cukup sensitif terhadap gas CH2O dan C2H5OH, namun tidak sensitif terhadap gas CO2 dan H2S. Berdasarkan pada hasil penelitian, dapat disimpulkan bahwa sistem dapat secara sensitif dan selektif mendeteksi senyawa VOC pada jenis C2H5OH dan CH2O dengan nilai akurasi >50%. Hasil pembacaan sistem pada sampel nafas perokok dan non perokok dapat menghasilkan tiga zona konsentrasi TVOC yang selanjutnya menjadi profil has TVOC yang dihembuskan oleh kelompok sampel. Terdapat perbedaan yang cukup signifikan antara konsentrasi TVOC perokok dan non perokok. Sistem dapat membedakan antara perokok dan non perokok dengan akurasi pembacaan >90%.
Co-Authors Anggriani, Ni Ketut Arafah, Putri Nurul Arif Budianto Fidya, Karina Alma Kasnawi Al Hadi Rizki, Rama Satutik Rahayu Suliartini, Ni Wayan Sri Wirawan, Rahadi