DefinePK

Abstract

Dustfall (DF) and Total Suspended Particulate (TSP) are often used to characterize air quality near the source of the dust. These two important parameters that contribute to air quality deterioration are required to be measured in accordance with government regulation of the Republic of Indonesia (PP41/1999). The purposes of the study were to (1) measure the concentration of DF and TSP generated from Andisol soil, (2) determine the emission factors that were affected by wind speed, soil moisture content, land cover percentage, and (3) analyse distribution of DF size. The study was conducted in a laboratory scale tunnel where the surface was covered by Andisol soil originated from Tanggamus Municipality in Lampung Province. DF was determined by the gravimetric method (SNI 13-4703-1998) and the samples were collected with DF Canister. Measurement of TSP concentration in ambient air was carried out based on SNI 19-7119.3-2005 method and the instrument was High Volume Air Sampler (HVAS). Analysis of the size distribution of the dustfall was carried out by direct observation using a digital microscope. Based on the research results, concentration of DF and TSP generation was lower than the quality standard limit of PP 41/1999 and was positively correlated with wind speed, negatively correlated with soil moisture content and the percentage of land cover. Emission factor of DF and TSP generated by Andisol soil was affected by wind speed and soil moisture content. Dustfall size was dominated by fraction of 10-100 µm.