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    Heavy metals (Cr, Cu, Pb, and Zn) concentrations of road-deposited sediments within six public plazas in Iloilo City
    Caceres, Rizza Daphet E. (Department of Chemistry, College of Arts and Sciences, University of the Philippines Visayas, 2011-04)
    Contamination from overland transportation is an unavoidable result of urbanization. Cr, Cu, Pb, and Zn arc common heavy metals introduced to the environment by transportation. Road-deposited sediment (RDS) samples were collected from six public plazas (Villa Plaza, Molo Plaza, Mandurriao Plaza, Plaza Libertad, Lapaz Plaza and Jaro Plaza) in Iloilo City from March 2010 to May 2010. 0.5M HC1 was used as extractant and heavy metals (Cr, Cu, Pb, and Zn) concentrations were determined using Flame Atomic Absorption Spectrophotometer (FAAS). The mean concentrations of Cr, Cu, Pb, and Zn in road-deposited sediments from six plazas were 8.79 ± 1.93, 40.90 ± 24.21, 60.74 ± 22.32, and 164.25 ± 25.0 mg/kg, respectively. Metal enrichment of Cr, Cu, Pb and Zn were approximately xl, x8, x7 and x18 more than the background values respectively. There was no significant temporal variation in metals concentrations of RDS between sampling collections. Generally, RDS from Plaza Libertad has the highest metal concentrations. Cu and Pb metals were highly correlated (R2 = 0.891) indicating possible similar sources. A good correlation (R2 = 0.918) was observed between Pb concentration and the number of vehicles that pass along the plaza per hour. Heavy metal concentrations in sediments from plazas have low hazard quotients but bioaccumulation of metals in the body could cause health effects. Efficiency of digestion procedures varied depending on characteristics, texture and composition of road-deposited sediments. 0.5M HC1 digestion was used because it is simple, cost-effective, time-efficient and it leaches out meaningful amounts of bioavailable metals. Using HC1 as extractant simulates human digestion since human stomach contains HC1 that could leach out metals if road-deposited sediments were ingested.
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    Factors affecting compliance of Iloilo City jeepney drivers (Molo via City High and Jaro Mandurriao) with anti-smoking ordinance: An assessment of Local Government Unit (LGU) ordinance implementation
    Biboso, Rissa A.; Salar, Edmund B. (Division of Social Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2004-03)
    The study sought to determine the factors affecting compliance of Iloilo City jeepney drivers to the anti-smoking ordinance, as well as assess the implementing mechanisms of the LGU in enforcing the said ordinance. Forty three (43) jeepney drivers plying two routes served as the respondents of the study, seven drivers from the Molo via City High route and thirty six respondents from Jaro Mandurriao. Likert scales were used to measure the respondents’ level of awareness regarding the ordinance and level of perception of legitimacy of authority. On the other hand, rating scales were used to rank the respondents’ reasons for compliance to the anti-smoking ordinance. Results showed that age and educational attainment do not affect the level of awareness and perception of legitimacy of authority of the jeepney drivers. Furthermore, the primary reasons for the jeepney drivers’ compliance to the anti-smoking ordinance were their level of awareness of the ordinance, the P300.00 fine for violators, confiscation of driver’s license and the presence of the Anti-smoking Task Force. Results showed that the implementing mechanisms employed by the LGU were effective.