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All Journal Lambda: Jurnal Ilmiah Pendidikan MIPA dan Aplikasinya
Kasnawi Al Hadi
Physics Study Program, University of Mataram
Agriculture, Biological Sciences & Forestry Education Mathematics Physics Public Health Other

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Measurement of Volatile Organic Compound Concentrations in the Exhaled Breaths of Ulcer and Non-Ulcer Samples: A Breath Profiling Kasnawi Al Hadi; Sabila Alhadawiah; Arif Budianto; Rahadi Wirawan; Laili Mardiana
Lambda: Jurnal Ilmiah Pendidikan MIPA dan Aplikasinya Vol. 6 No. 1 (2026): Lambda
Publisher : Lembaga Bale Literasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58218/lambda.v6i1.2733

Abstract

VOCs in exhaled breath have been shown to have diagnostic value for various respiratory diseases such as chronic obstructive pulmonary disease, asthma, and interstitial pneumonia. In diseases such as ulcers, increased levels of certain VOCs are caused by metabolic changes or abnormalities in the gut microbiome that contribute to disease symptoms. In line with this, this study aims to identify VOCs in the breath of people suffering from ulcer and non-ulcer samples (pre-clinical), using the CCS811 sensor. The methods used are clean air (calibration) and formaldehyde gas (examination) measurement inside an exposure chamber for 100 seconds. Then, the breath samples were collected and analyzed to measure the VOC concentrations. The differences in VOC concentration levels detected in breath samples in the two classifications were obtained. Breath samples from ulcer samples tend to show higher VOC concentrations than non-ulcer samples. These results show that there is a relationship between VOC concentration levels in the ulcer samples. The non-ulcer samples tends to be more stable and has lower VOC concentration levels. The increase in VOC levels is caused by changes in metabolism or abnormalities in the gut microbiome. The ANOVA results showed that there were significant differences between the ulcer and non-ulcer samples.
Integration of Electrostatic Precipitator-Ionizer-HEPA Filter for a Low Power Air Filtration System Arif Budianto; Mira Andini; Kasnawi Al Hadi; Laili Mardiana; Nurul Qomariyah; Lalu Sahrul Hudha; Titi Devitanala
Lambda: Jurnal Ilmiah Pendidikan MIPA dan Aplikasinya Vol. 6 No. 1 (2026): Lambda
Publisher : Lembaga Bale Literasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58218/lambda.v6i1.2744

Abstract

Air pollution has become an important issue due to its impacts on human health and the environment. Especially indoor air pollution has more attached many concerns because humans also spend their time every day indoors. Indoor air pollutants in terms of particulate matter (PM) in different size distribution and gasses come from different sources such as smoke, hair spray, mosquito disinfectant, cooking, etc. The air purifier has become popular in the pandemic era at the being. In this research, we developed an indoor PM purification system technology by integrating three filtering methods: HEPA filter, electrostatic precipitator, and an ionizer to clean air by reducing PM concentration. The purpose of this study is to obtain the indoor purification system capable of cleaning non-bioaerosol PMs. The investigation was conducted in a chamber using several particulate matter sources. From both PM sources, it can be concluded that the purification system works well to purify the air in the tested chamber. The measurements of the different PM size distribution concentrations show that the system has the purification efficiency of 90±1% (non-bio fine particle) and 91±1% (non-bio coarse particle).
Co-Authors Arif Budianto Laili Mardiana Lalu Sahrul Hudha Mira Andini Nurul Qomariyah Rahadi Wirawan Sabila Alhadawiah Titi Devitanala