000 02321nam a2200277Ia 4500
001 78793
003 per1892
005 20251010140949.0
008 190807n r p 0 0eng d
040 _erda
041 _aengtag
050 _aSH1 P538 2016
082 _a.
100 _aPerelonia, Karl Bryan S., Abendanio, Camille C., Rana, Joan A., Opinion, April Grace R., Villeza, Jordan T., and Cambia, Flordeliza D.
245 0 _aHeavy Metal Contamination in Water and Fishery Resources in Manila Bay Aquaculture Farms
264 _a.
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336 _btext
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337 _bunmediated
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338 _bvolume
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385 _a2
505 _aABSTRACTS : Heavy metal (HM) are high-atomic weight elements hazardous at very low concentration. Despite of the health risk HM contamination brings, studies conducted were only confined to the offshore and marine portions of the bay. Hence, this study was conducted to establish baseline information and compare the spatial and seasonal distribution of heavy metal contamination in water and fishery resources in aquaculture farms and coastal areas in Manila Bay. Water and major aquaculture commodities were collected in November 2014, February 2015 and April 2015 and were analuzed for lead (Pb), cadmiun]m (Cd) and mercury (Hg) using the following methods : (1) Graphite Furnace Atomizer-Atomic Absorption Spectrophotometry (GFA-AAS) for Pb and Cd and (2) Mercury Vaporizing Unit - AAS (MVU-AAS) for HgCd (Bataan , Cavite, Bulacan and Pampanga) and Hg (Cavite and Pampanga) in water were found significantly higher during the dry season (p<0.05). In contrast, Pb in water was relatively higher during the wet season but levels were not significantly different with those in the dry. Several sites in Bataan, Bulacan,and Cavite, exceeded DENR regulatory limits fo Pb and Hg in water by 1.35 to 1.8%. As for the fishery commodities, 2 1/2 milkfish samples and 1/9 exceeded regulatory limit for Pb in finish (0.3) mg/kg) by 1.03 to 3.57% while 1/12 milkfish samples and 1/13 oyster samples exceeded the limit for Hg in bivalves for Hg in bivalves (0.5mg/kg) by 0.045to 0.75
526 _aFIC
650 _aHeavy Metals -- Aquaculture -- Manila Bay
655 _aenvironmental science
942 _alcc
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999 _c6210
_d6210