000			03103nam a22003137a 4500
003			OSt
005			20250717141046.0
008			250715b |||||||| |||| 00| 0 eng d
040			_aTUPM _bEnglish _cTUPM _dTUPM _erda
050			_aBTH GF 41 _bD33 2025
100			_aPaciente, Erica Jane O. _eauthor
245			_aIdentification and characterization of microplastic in mangrove sediments of manila bay, metro manila, philippines/ _cErica Jane O. Paciente, Mechaila E. Villador, Angela O. Castillo, and Francilo T. Sabete.--
260			_aManila: _bTechnological University of the Philippines, _c2025.
300			_ax, 142pages: _c29cm.
336			_2rdacontent
337			_2rdamedia
338			_2rdacarrier
500			_aBachelor's thesis
502			_aCollege Of Science.-- _bBachelor of science in environmental science: _cTechnological University of the Philippines, _d2025.
504			_aIncludes bibliographic references and index.
520			_aThe aim of this study was to determine the prevalence and abundances of MPs in three mangrove sites across NCR, namely Tanza Marine Tree Park in Navitas city, Baseco Compound in Port Area, city of Manila, and Las Piñas-Parañaque Wetland Park in Las Piñas-Parañaque border. In methodology, sediment samples were collected using a stainless-steel probe. Each sampling site was divided into three transects, seaward (T1), in between (T2), and landward (T3), and each transect was divided into 4 sample sets by depth (0-5cm, 6-10cm, 11-15cm, and 16-20cm), where at each depth the researchers collected 100 g of sediments, for a total of 36 sediment sample sets. When it comes to sample treatment, it is first in-air dried for several days to reduce its moisture content, after drying, the sediments are sieved using a 0.125 mm stainless-steel mesh to obtain a uniform particle size distribution suitable for MP isolation. Then it is oven dried at 80°C for 12 hours to remove the remaining moisture content in the sediments. When it comes to extraction of MP, it is first soaked in 200 mL of 60% calcium chloride (CaCl2) for the density separation technique to separate MP particles from the sediments, and filtered using Whatman Grade 1 filter paper with 11μm pore size to filter the MPs from solutions. When it comes to organic digestion, it is soaked in 10% potassium hydroxide (KOH) solution to remove the organic matter present in the MPs and filtered again using filter paper to filter the specimens from the solution. For sample analysis, microscopy analysis was first performed to determine its physical characteristics such as size, shape, and color. And for the polymer type identification, the specimens were subjected to Fourier Transform Infrared (FTIR) spectroscopy to determine the polymer composition of the MPs analyzed.
650			_aMicroplastic prevalence
650			_aSediment analysis
650			_aPolymer identification
700			_aVillador, Mechaila E. _eauthor
700			_aCastillo, Angela O. _eauthor
700			_aSabete, Francilo T. _eauthor
942			_2lcc _cBTH COS _n0
999			_c30382 _d30382