000			02797nab a22003494ib4500
003			PH-QcNFR
005			20240229154943.0
008			240220c||||||||ph fr j o||||f0 a|eng|d
022	1		_a2672-2836 (Online)
040			_aPH-QcNFR _beng _cPH-QcNFR
100	1		_aRaña, Joan A. _93695
245	1	0	_aHeavy metal contamination in water and fishery resources in Manila Bay aquaculture farms / _cJoan A. Raña and five others
264		1	_aQuezon City, Philippines : _bBureau of Fisheries and Aquatic Resources , _c2017
336			_atxt _btxt
337			_ac _bc
338			_acr _bcr
347			_atext file _bPDF
504			_aIncludes bibliographical references
520	3		_aHeavy metals (HM) are high-atomic weight elements hazardous at very low concentrations. Despite 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 analyzed for lead (Pb), cadmium (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 Hg. Cd (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 for Pb and Hg in water by 1.35 to 1.8%. As for the fishery commodities, 2/12 milkfish samples and 1/9 exceeded regulatory limit for Pb in finfish (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 (0.5 mg/kg) by 0.45 to 0.75%.
546			_aeng _beng
650		0	_2LCSH _aAquaculture _973
650		0	_2LCSH _aBays _zPhilippines _91253
650		0	_2Fishes _xHeavy metal content _94309
650		0	_2LCSH _xWater _aPollution _94310
700	1		_aAbendanio, Camille C. _eauthor _93696
700	1		_aCambia, Flordeliza D. _eauthor _93697
700	1		_aOpinion, April Grace R. _eauthor _93698
700	1		_aPerelonia, Karl Bryan S. _eauthor _93699
700	1		_aVilleza, Jordan T. _eauthor _93700
773	0		_078 _9164 _aPhilippines. _oIRC00032 _tThe Philippine Journal of Fisheries _x2672-2836 (Online) _gVolume 24, Issue no. 2 (July - December 2017), page 39 - 73
942			_2lcc _n0 _cJA _iIMC000181
999			_c1010 _d1010