VOCs (volatile organic compounds) can be used as a biomarker of placebo phenomenon, such stress, panic disorder, health conditions, and many others. from the exhaled breath have different concentration levels that are also related to diseases. However, use biomarkers in very limited. Hence, this study aims develop novel e-nose (electric nose) system based on VOC measurement identify phenomenon emission areas. For purpose, digital semiconductor sensor microcontroller were detect level. The...

Partikulat atau PM (particulate matter) tergolong sebagai emisi udara yang sangat mudah terdistribusi. Di sisi lain, terdapat limitasi pemantauan kualitas di berbagai daerah pulau Lombok, terlebih untuk konsentrasi jenis PM. Sejalan dengan hal tersebut, penelitian ini bertujuan mengukur besar dan faktor beberapa Lombok menggunakan sebuah sistem pengukuran udara. Penelitian lima sampel diperoleh dari lokasi berbeda. Sampel tersebut adalah: sekam padi (SP), jerami (JP), tongkol jagung (TJ),...

The increasing air pollution, particularly from fine particulate matter (PM_2.5), poses a significant challenge in maintaining indoor quality. PM_2.5 is categorized as small dust particle and suspended the air, easily inhaled, potentially causing health problems. This study aims to analyze concentrations based on cleanliness levels human activity. Measurements were taken using counter at 2-second intervals for 30 seconds under four conditions: clean room without occupants, dirty with...

Pengelolaan limbah Cangkang Kerang Mutiara (Pinctada maxima) sebagai bahan baku ramah lingkungan dalam pengembangan teknologi semikonduktor perovskite CaTiO₃. Penelitian ini bertujuan untuk mengidentifikasi sifat listrik CaTiO3 berdasarkan parameter konduktivitas dan band gap. Sintesis dilakukan menggunakan metode kopresipitasi dengan variasi suhu kalsinasi. Karakterisasi material CaTiO3menggunakan FTIR, Spektrofotometer UV-Vis, Zeta Potential Analyzer. Karakteristik gugus fungsi menunjukkan...

Bioaerosols are the biological constituent of PM (particulate matter).Bioaerosols produced during many activities in landfills, agricultural sectors, food preservation, and others daily life [1,2].Bioaerosols can be generated from biomass burning activity, resulting bioaerosols with a diameter <2.5 µm (fine bioaerosols) [2].Bioaerosols commonly have forms like fungal spores, pollen, bacteria, even viruses.As confirmed before, consist Aspergillus, Alternaria, Cladosporium species...

Abstract QCM or quartz crystal microbalance is a well-known sensor technology that generates cycles of oscillation related to mass change on the crystal’s surface. This works well when it has frequency counter and an oscillator drive count oscillation, good airflow regulator. study developed measurement system for aerosol concentrations with diameter less than 2.5 micrometers. The consists sensors, oscillator, counter, was tested inside exposure chamber constant emission source different...

The increase in energy needs must be balanced by environmentally friendly technological innovations. Chitosan polymer is one of the innovations materials that are being developed many countries. This research aimed to identify potential oyster pearl shell waste as a source electrolyte polymers. study was conducted experimentally synthesizing chitosan nanoparticles from using ionic gelation method. obtained through isolation method Pinctada maxima waste. carried out three processes:...

Emissions from burning biomass have become a problem in Indonesia.As found on the Indonesian island of Lombok, agricultural waste is burned for traditional industrial activities.On other hand, emissions contain many PMs (particulates) different size distributions recognized to significant correlation health impact.This study conducted predict impact PM exposure blood using ANN (artificial neural network) model as well histological examination.The relationship between both methods determined...

electivity level, and performance development needs, there is a need to develop new sensing technique with higher performance. This study used quartz crystal microbalance (QCM) graphene oxide (GO) as the selective coating materials. For this purpose, two different sensors were tested: uncoated QCM GO-coated QCM. The sensor performances tested inside an exposure chamber by exposing bacteria samples: B. pasteurii, sphaericus, cereus. sensor's frequency shift was counted using counter, while...

Volatile organic compounds or VOCs can be derived from many sources, like cooking, smoking, biomass burning, and motor vehicle emission. are a type of gas known to have significant relationship with human health air quality. It is necessary monitoring system determine VOC concentration in the surrounding environment. This study aims develop portable measurement for volatile different emission sources. The designed was tested under sources: cigarette smoke, mosquito coil, spray paint,...

Exhaust emissions from motor vehicles have become hot issues due to their toxicities and effects on health adverse. To reduce the emission, people develop a filtering system. This study developed system based electrostatic principle taken an advantage battery for electricity PM2.5 exhaust emissions. The filter consists of set aluminum plates as electrodes (anodes cathodes). These were embedded in acrylic frame connected battery. gap between was varied namely 1 (F1), 2 (F2), 3 (F3). filters...

Vehicle emissions in terms of particulate matters PM <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0.1</sub> and xmlns:xlink="http://www.w3.org/1999/xlink">2.5</sub> have been recognized to contribute a significant amount pollutants into the air adverse human health. One efforts reduce emission is by designing filtering system. This study develops system applying DC voltage. The objective this research was obtain with high efficiency based on...

Abstract LPG utilization need more attention to safety aspects of human, environmental and equipment. This research aims develop a wheeled robot which is capable detecting leaks in horizontal pipes by data acquisition via wireless internet, so that it useful facilitate human work determining leak points on pipes. The controller this Arduino UNO equipped with sensors. sensor measurement acquisitioned using the Node MCU module Blynk application as an interface application. has emergency stop...

Abstract Increasingly strict air pollution regulations along with global warming issue have peeked the interest in cleaner emission emitted by motor vehicle. In line this, this study was aimed to develop a particulate filtering system based on an electrostatic principle for matter diameter less than 2.5 μm, as known fine particle, and test performance of filter. The filter consists aluminum anodes cathodes electrodes. These electrodes were placed into frame installed vehicle muffler....

Fine particles are particulate matters having a diameter less than 2.5 µm, ubiquitous in ambient air and mainly resulted from many emission sources. Several epidemiologic studies have investigated fine that relationship with an inflammatory response deep the lung red blood cells. For these reasons, interest real- time monitoring of concentrations has increased. In this study, bare quartz crystal microbalance combined by impactor, particle filter paper, signal conditioning circuit was used to...

Biodegradable plastic is an environmental friendly made from starch and cellulose. Starch cellulose were extracted cassava peel peanut shell. The purpose of this research was to get the best formulation shell as on physical mechanical properties biodegradable plastics. This conducted experimentally by using complete randomized design (CRD) which consist five treatment three replications, thus analyzed ANOVA followed duncan’s new multiple range test (DNMRT) at level 5%. treatments in PS1...

Recent studies have developed fine particle measurement systems using many methods.However, most of them are high-cost and unsuitable for harsh conditions.This study introduces a portable concentration system based on gravimetry principle air quality in highly humid environment.This used bare QCM (Q1) graphene oxidecoated (Q2) as the sensors.All sensors were installed inside sensor box tested at two different humidity levels: 75% (normal humidity) 95% (high humidity).The emissions (diameter...

In Lombok, the traditional process of dyeing woven fabrics primarily involves use synthetic dyes, which can contribute to environmental pollution. This study aimed identify characteristics yarn and assess effect dye solution pH on properties when using teak leaves (Tectona grandis) produce powder through a mechanical thermal method. The thread coloring comprised mordanting, coloring, fixation stages, with assistance Android applications for color analysis Universal Tensile Machine Type...

Background: Indonesia ranks third in the world regarding air pollution due to forest and land fires; most of burned is a peatland. Particulate matter (PM) 2.5 largest component total smoke particles. Short-term long-term exposure PM2.5 remains hazard human health.Objective: This study aims examine effect peat biomass on serum malondialdehyde (MDA) levels body weight Wistar rats.Methods: Experimental animals were randomly divided into three groups: Control group (C) not given treatment,...

Formaldehyde is a kind of air pollutant with strong volatility at room temperature. emitted from many sources, such as furnishing, building sector, and smoking. classified highly carcinogenic substance for human health. To mitigate the health impact formaldehyde, it necessary to detect measure it. However, measurement technology development formaldehyde concentration in ambient rarely developed categorized high-cost device. Thus, this study aims develop system based on bare quartz crystal...