000			03267nam a22003257a 4500
003			OSt
005			20260615114420.0
008			260615b |||||||| |||| 00| 0 eng d
040			_bEnglish _cTUPM _dTUPM _erda
050			_aBTH GF 41 _bC37 2026
100			_aCastro, Catrina D. _eAuthor
245			_aAir Quality and Characterization of Microplastic Presence in Moss Plant in Intramuros, Manila, Philippines/ _cCatrina D. Castro, Jan Yzabel A. Gaza, Samantha H. Gierza, Keith Brian M. Hizon, and Danica R. Robles..-
260			_aManila: _bTechnological University of the Philippines, _c2026.
300			_av, 277 pages: _c29 cm.
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, _d2026.
504			_aIncludes bibliographic references and index.
520			_aThis study determined the presence and characteristics of microplastics (MPs) on naturally occurring mosses in Intramuros, Manila during the wet and dry seasons. A mixed-methods approach was employed, wherein the quantitative component utilized observational biomonitoring to detect and characterize MPs, while the qualitative component applied a descriptive survey design to identify possible sources contributing to microplastic presence in the area. The research was conducted in three stratified sampling sites in Intramuros, selected based on moss abundance and their representation of different environmental conditions. Air quality was measured in terms of: temperature, relative humidity, moisture, heat index, and wind speed. Microplastic particles were characterized based on abundance, size, shape, color, and polymer type, validated through Fourier Transform Infrared (FTIR) spectroscopy. A total of 36 out of 284 microparticles were confirmed as microplastics from moss and air samples across both seasons. Fibers/lines were the dominant shape, and polyethylene terephthalate (PET) was the most abundant polymer. Color distribution in moss samples was dominated by white and transparent particles (wet season), and black particles (dry season). Larger particles (2.37–5 mm) were most prevalent. Although higher abundance was observed in the wet season, no significant difference was found between seasons (U = 3.00, p = 0.700), indicating that microplastic distribution is influenced by multiple interacting meteorological and anthropogenic factors rather than seasonality alone. Findings confirm that mosses function as passive biomonitors of MPs. It is recommended to expand sampling coverage, develop standardized analytical methods, waste management policies and public awareness, regarding possible health risk implications, and conduct long-term multi-seasonal studies. Keywords: anthropogenic activities, Intramuros, microplastics, moss, dry and wet season
650			_aEnvironmental Science
650			_aAnthropogenic activities
650			_aMicroplastics
700			_aGaza, Jan Ysabel A. _eAuthor
700			_aGierza, Samantha H. _eAuthor
700			_aHizon, Keith Brian M. _eAuthor
700			_aRobles, Danica R. _eAuthor
942			_2lcc _cBTH COS _n0
999			_c31516 _d31515