National Committee on Marine Sciences (NCMS)
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- In Silico supported nontarget analysis of contaminants of emerging concern: Increasing confidence in unknown identification in wastewater and surface watersAngeles, Luisa F.; Halwatura, Lahiruni M.; Antle, Jonathan P.; Simpson, Scott; Jaraula, Caroline M.B.; Aga, Diana S. (American Chemical Society, 2021-08-01)Nontarget analysis using liquid chromatography–high resolution mass spectrometry (LC–HRMS) is a valuable approach in characterizing for contaminants of emerging concern (CECs) in the environment. In this study, wastewater and surface water samples from three locations in Manila, Philippines were analyzed for CECs using a nontarget analysis approach with an LC-Orbitrap. A previously optimized semiautomated workflow was used for data processing with Compound Discoverer. A total of 157 compounds were identified, with 21 confirmed with reference standards, 83 confirmed with evidence from a mass spectral library (mzCloud), and 53 tentatively identified using in silico fragmentation (MetFrag). These compounds include pharmaceuticals such as antibiotics, antifungal, and antihypertensive compounds, human metabolites, natural products, pesticides, and industrial chemicals. Compounds confirmed with reference standards include antibiotics ciprofloxacin, clarithromycin, acetyl-sulfamethoxazole, and trimethoprim (2 to 19 ng/L), and antifungal compounds carbendazim and climbazole (3–47 ng/L). The pesticides diethyltoluamide (DEET) and diuron were also detected (37 ng/L). The utility of a preliminary multivariable linear regression quality structure-retention relationship (QSRR) model based on quantum chemical molecular descriptors is demonstrated. This study demonstrates the importance of using tools and software that are helpful for annotating HRMS data and reporting detections according to a standardized classification system. The detection of several CECs in wastewater and surface water samples show the importance of performing nontarget analysis in determining occurrence of CECs in the environment.We acknowledge support from the National Science Foundation PIRE-HEARD award number 1545756 and USAID PEER subaward number 2000009924. S.S. thanks the National Science Foundation (Award #1904825) for support of this research, and the Donors of the American Chemical Society Petroleum Research Fund (PRF-58954-UNI5). We also thank Shyrill Mae Mariano from the Marine Science Institute in the University of the Philippines − Diliman who helped with the sample collection and Rebecca Dickman from University at Buffalo for her help on technical work.
- Firm assures no oil debris will be left in GuimarasAngelo, Francis Allan L. (Daily Guardian Multi-Media Services, Inc., 2020-07-21)The owner of the power barge stationed in Iloilo City that triggered an oil spill earlier this month assured local officials of Guimaras that it will never leave the island until it has cleaned up the spill. In a meeting on July 18, 2020, representatives of AC Energy Philippines said it will do everything to clear the island province of oil sludges and other contaminants that affected more than 30 villages. AC Energy owns Power Barge 102 which exploded and caused an oil spill last July 3, 2020. The barge is stationed at Bo. Obrero, Lapuz which was also heavily affected by the spill.
- Desilting of Manila Bay beginsUnite, Betheena Kae (Manila Bulletin Publishing Corporation, 2019-03-05)Amphibious excavators, dumping scows, dump trucks, debris segregator, and vacuum sewer jet cleaners were deployed in Manila Bay Tuesday, the first day of dredging operations to clean up the bay. “Sagip Manila Bay,” according to Department of Public Works and Highways (DPWH) Secretary Mark Villar, will cover the 1.5-kilometer stretch of Manila Bay shoreline from the Manila Yacht Club to the US Embassy. An estimated 225,000 cubic meters of silt siphoned off, according to Bureau of Equipment Director Toribio Noel Ilao.
- BFAR-10: Just enough fish for region's needsBaconguis, Lance (Philippine Manila Standard Publishing, Inc., 2018-09-19)The Bureau of Fisheries and Aquatic Resources here in Northern Mindanao said there is just enough fish supply in the region, most of which is highly dependent on the supply from Zamboanga peninsula. BFAR regional Director Teoduro Bacolod Jr. in a media briefing Tuesday afternoon, said the region is not dependent on the catch of fisherfolk from the region. “We have supply from other regions like Zamboanga and General Santos, with support from catch in the region,” Bacolod said. Data from the National Economic Development Authority in Region 10 showed the region produced 32,719.34 metric tons of fish in the first quarter of 2018, a 2.4-percent drop in production compared to the first quarter of 2017.
- Cavite takes action against water pollutionGiron, Anthony (Manila Bulletin Publishing Corporation, 2017-02-16)Local government authorities in this city have started efforts to clean rivers in the lowland and upland districts of the province following reports that some tributaries are contaminated by waste and toxic chemicals. River dredging and clearing operations were relaunched in Bacoor District in January as a course of action against floods and pollution in the area. During the launch, waste traps were installed along waterways bounding several barangays (villages) in the district.