VOL. 10, NO. 18, OCTOBER 2015 ISSN 1819-6608 ARPN Journal of Engineering and Applied Sciences © 2006-2015 Asian Research Publishing Network (ARPN). All rights reserved. www.arpnjournals.com 8184 ANALYSIS OF DUSTFALL GENERATION FROM REGOSOL SOIL IN JAVA ISLAND, INDONESIA Asiyah Azmi 1 , Arief Sabdo Yuwono 1 , Erizal 1 , Allen Kurniawan 1 and Budi Mulyanto 2 1 Departement of Civil and Environmental Engineering, Bogor Agricultural University, Indonesia 2 Department of Soil Science and Land Resources, Bogor Agricultural University, Indonesia E-Mail: asiyah.azmi16@gmail.com ABSTRACT Dustfall is one of ambient air quality parameters according to PP 41/1999 about Air Pollution Control. Dustfall pollution in open field can be controlled effectively and efficiently if the influence of wind speed, soil moisture and land cover to dustfall generation are known. This research aims to obtain correlation between wind speed, soil moisture, and land cover factors on dustfall generation, to describe the influence of these factors on dustfall generation, and to analyze the physical properties of dustfall (dustfall particle’s shape and size frequency distribution). The study was conducted with regosol soil samples from three different locations, i.e. Gunung Sindur Sub-District, Pelabuhan Ratu beach and Parangkusumo Sand Dunes. The instruments and materials used in the research were dustfall canister (AS 2011-1), filter paper (Whatman #41), wind blower, digital anemometer, digital moisture tester and universal oven. The measurement of dustfall generation was conducted in a laboratory scale using regosol soil from three locations as land cover. Analysis were also conducted on soil texture and physical characteristics of dustfall, i.e. shape and size frequency distribution. Based on the research results, wind speed known to be positively correlated with dustfall generation, while the soil moisture and land cover was negatively correlated with dustfall generation. The relationship between wind speed, soil moisture content, and the percent of land cover with dustfall concentration can be described with multiple polynomial equation. The size frequency distribution of dustfall particles from regosol soil in each sampling locations were dominated by particulate size of 10 - 100 µm. Keywords: dustfall, multiple regression, particulate size, regosol INTRODUCTION Particulate in ambient air are form of aerosol which is defined as a simple form of solid particle or liquid that suspended in a gas [1]. The high concentration of dust in ambient air can be harmful to health, it causing health problem such as asthma and lungs irritation [2]. Dustfall is one of ambient air quality parameters according to Indonesian Government Regulation (PP 41/1999) about Air Pollution Control. High generation of dust into the ambient air is affected by four things: strong wind, dry soil, sparse vegetation, and saltating particles [3]. Therefore, the generation of dustfall is influenced by wind speed and direction, soil moisture, land cover, and type of soil. Generation of dustfall correlated negatively with soil moisture content and percentage of land cover and correlated positively with wind speed [4]. Regosol are one of soil type that classified by FAO (Food and Agriculture Organization), whereas in USDA (United State Department of Agriculture) taxonomy regosol can be classified as entisol or inceptisol. Regosol are a young soil that friable and eroded easily [5] [6]. It shows that regosol are type of soil which can be distributed easily by fluids (water and air). The previous research by Yuwono et al. [7] and Amaliah et al. [4] described the relationship between generation of dustfall and wind speed, soil moisture content and land cover from ultisol, oxisol, andisol, and entisol soils in Java Island. Until now, there is no study that analyzing dustfall generation from regosol soil in Indonesia. Dustfall pollution in open field can be controlled effectively and efficiently if the influence of wind speed, soil moisture and land cover to dustfall generation are known. Air quality management strategy must consider the relative contribution of the natural and anthropogenic sources of air pollution [8]. The first objective of the research was to obtain correlation between wind speed, soil moisture, and land cover percentage factors on dustfall generation from regosol soil in three locations in Java. The second objective of the research was to describe the influence of these factors on dustfall generation from regosol soil in three locations in Java. The last objective of this research was to analyze the physical properties of dustfall (dustfall particle’s shape and size frequency distribution) of regosol soil in three locations in Java. MATERIALS AND METHODS The study was conducted in Darmaga Sub- District, Bogor Municipality, Indonesia. Regosol soil samples were originated from three locations in Java, Indonesia, i.e. Gunung Sindur Sub-District (Bogor Municipality); Pelabuhan Ratu Beach (Sukabumi Municipality) and Parangkusumo Sand Dunes (Bantul Municipality). This study was carried out in February until May 2015. The measurement of dustfall generation was conducted in a laboratory scale using regosol soil from three locations as land cover. Analysis were also conducted on soil texture and physical characteristics of dustfall, i.e. shape and size frequency distribution. One day laboratory scale measurement includes three data collection. The first one was concentration of dustfall captured as much as 3 repetitions at the same time, with an average time about 8 hours. The second