Comparative assesment of lead (pb) level in selected elementary Jasper Lorenz F. Paz... [et. al]

Thesis Bachelor of Science in Biology University of Rizal System-Morong 2018

EXECUTIVE SUMMARRY: This study was conducted to assess the level of lead (Pb) in Selected Elementary Schools along the National Road in Eastern Rizal during the S.Y. 2017-2018. The study made use of the descriptive design in determining the percentage concentration of lead (Pb) from dust collected in selected elementary schools such as Simeon Sr. Bendaña Elementary School designated as ES1; Baras Elementary School designated as ES2 and Tomas Claudio Memorial Elementary School designated as ES3. The study followed different procedures in the content of the study such as: preparation of materials, collection of dust between dry and wet season in three sites, filtering of dust and its analysis through Atomic Absorption Spectrophotometry which was done at the University of the Philippines in Los Baños, Laguna specifically at Molecular Biology and Biotechnology (BIOTECH). To determine the tolerable level of lead (Pb) level from dust collected in selected elementary schools within Eastern Rizal that were compared to United States Environmental Protection Agency (USEPA) and Philippine Standards. Comparative analysis utilizing Mean and Standard Deviation were used. The study revealed that between the two seasons, dry season has higher level of lead (Pb) from ES1 which obtained an amount of 4.56 ppm; ES2 it obtained 5.34 ppm and for ES3 it obtained 3.57 ppm compared to wet season which obtained a lead content 2.76 ppm for ES1;3.02 ppm for ES2 and 3.29 for ES3. Both in wet and dry seasons all Elementary Schools exhibit significant amount of lead from the dust collected however such amount still within the tolerable limit based from the USEPA and Philippine Standards. Based from the findings the study concluded that lead present in different Elementary Schools are within the optimum limit and may not pose any health hazard.