Geochemical speciation of metals (Cu, Pb, Cd) in fishpond sediments in Batan Bay, Aklan, Philippines

Nillos, Mae Grace; Taberna, H. S.; Sesbreño, Roxzien Shaye; Pahila, Ida G.; Okamoto, Yuki; Añasco, Nathaniel C.

doi:10.1007/s10661-020-08613-7

Cited by 5 publications

(4 citation statements)

References 54 publications

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“…(2021) as both the Tinagongdagat Bay and river zone are found to accumulate mangrove litter and microphytobenthos (a type of microalgae). Nevertheless, albeit having relatively higher turbidity in 2020, the river area is considered non-polluted by US Environmental Protection Agency's (US EPA) standard (Nillos et al, 2020).…”

Section: Resultsmentioning

confidence: 99%

Development of Google Earth Engine Application for Spatiotemporal Analysis of Turbidity in Batan Estuary, Aklan Through the Harmonization of Landsat and Sentinel-2 Imagery

Zablan,

Blanco,

Primavera-Tirol

et al. 2023

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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Abstract. Water turbidity poses a threat to marine life and the economy. To address this, regular monitoring is crucial. Field methods are commonly employed, but they can be costly and challenging to perform consistently and historically. Luckily, remote sensing satellites offer a viable solution by collecting image data from space for Earth observation. Researchers have utilized these satellite images to develop indices for analyzing water turbidity and chlorophyll-a content. Leveraging the Google Earth Engine geospatial data computing platform, an application has been created to facilitate water quality monitoring. The app harmonizes Landsat and Sentinel-2 Imagery to improve temporal resolution and increase historical data availability. These images are then subjected to indices, namely the Normalized Difference Turbidity Index (NDTI) and the Normalized Difference Chlorophyll Index (NDCI), to estimate water turbidity and chlorophyll-a content, respectively. To evaluate the effectiveness of the app, the Batan Estuary in Aklan was selected as a test site. Annual mean water turbidity data from 2000 to 2021 were processed and downloaded through the app and subsequently imported into ArcGIS Pro for further analysis. Raster statistics revealed that turbidity and chlorophyll-a content have consistently decreased since 2000, with already low levels observed. Although the river section exhibited the highest turbidity relative to the estuary, it can still be deemed nonpolluted based on US EPA standards. Moreover, ArcGIS's emerging hotspot analysis indicated that the estuary predominantly featured cold spots, indicating minimal areas with clusters of turbid water over time.

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Section: Resultsmentioning

confidence: 99%

Development of Google Earth Engine Application for Spatiotemporal Analysis of Turbidity in Batan Estuary, Aklan Through the Harmonization of Landsat and Sentinel-2 Imagery

Zablan,

Blanco,

Primavera-Tirol

et al. 2023

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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“…Six papers from the Philippines were not included in the calculations of ERI and HHRA [ 237 , 238 , 239 , 240 , 241 , 242 ]. The exclusions were mainly due to not all the three metals (Cu, Pb, and Zn) being analyzed and reported in the papers.…”

Section: Resultsmentioning

confidence: 99%

“…These findings demonstrated the need to take sediment compositions into account when assessing lake ecosystems. Of the Batan Bay in Aklan, Nillos et al [ 240 ] reported the Cu was found to have the highest concentration (10.61–66.81 mg/kg dry weight) in the sediment. The Batan Bay sediments might be considered generally non-polluted concerning Cu, Pb, and Cd, Hence, these metals were not expected to cause adverse effects to aquatic organisms under normal conditions.…”

Section: Resultsmentioning

confidence: 99%

Ecological-Health Risk Assessments of Heavy Metals (Cu, Pb, and Zn) in Aquatic Sediments from the ASEAN-5 Emerging Developing Countries: A Review and Synthesis

Yap

Al-Mutairi

2021

Biology

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The ASEAN-5 countries (Malaysia, Indonesia, Thailand, Philippines, and Vietnam) of the Association of Southeast Asian Nations as a group is an ever-increasing major economy developmental hub in Asia besides having wealthy natural resources. However, heavy metal (HM) pollution in the region is of increasing environmental and public concern. This study aimed to review and compile the concentrations of Cu, Pb, and Zn in the aquatic sediments of the ASEAN-5 countries published in the literature from 1981 to February 2021. The mean values of Cu, Pb, and Zn in aquatic sediments were elevated and localized in high human activity sites and compared to the earth’s upper continental crust and reference values. Based on 176 reports from 113 publications, the ranges of concentrations (mg/kg dry weight) were 0.09–3080 for Cu, 0.37–4950 for Zn, and 0.07–2666 for Pb. The ecological risk (ER) values ranged from 0.02–1077 for Cu, 0.01–95.2 for Zn, and 0.02–784 for Pb. All reports (100%) showed the Zn ER values were categorized as being between ‘low potential ecological risk’ and ‘considerable potential ecological risk’. Almost all Cu ER values (97.7%) also showed similar ranges of the above two risk categories except for a few reports. The highest Cu level (3080 mg/kg dry weight) was reported from a mine-tailing spill in Marinduque Island of the Philippines with ‘very high ecological risk’. In addition, drainage sediments in the western part of Peninsular Malaysia were categorized as Cu ’high potential ecological risk’. Almost all reports (96%) showed Pb ER values categorized as between ‘low potential ecological risk’ and ‘moderate potential ecological risk’ except for a few reports. Six reports showed Pb ER values of ‘considerable potential ecological risk’, while one report from Semarang (Indonesia) showed Pb ER of ‘very high ecological risk’ (Pb level of 2666 mg/kg dry weight). For the ingestion and dermal contact pathways for sediments from the ASEAN-5 countries, all non-carcinogenic risk (NCR) values (HI values 1.0) for Cu, Pb, and Zn reflected no NCR. The ER and human health risk assessment of Cu, Pb, and Zn were compared in an integrative and accurate manner after we reassessed the HM data mentioned in the literature. The synthesis carried out in this review provided the basis for us to consider Cu, Pb, and Zn as being of localized elevated levels. This provided evidence for the ASEAN-5 group of countries to be considered as being a new socio-economic corridor. Beyond any reasonable doubt, an ever-increasing anthropogenic input of HMs is to be expected to a certain degree. We believe that this paper provides the most fundamental useful baseline data for the future management and sustainable development of the aquatic ecosystems in the region. Lastly, we claim that this review is currently the most up-to-date review on this topic in the literature.

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“…However, over period, it gets contaminated with pollutants added by anthropogenetic activities (Linnik & &, 2000;Lwanga et al, , 2015. This contamination sometimes done by nature itself but in speci c area where concentration of the elements is found to be more, land use (Nillos et al, 2020), and industries also reported to be accountable (Bhardwaj et al, 2020;Das & Maiti, 2007). Heavy metals, a natural element which is having high atomic weight and 5 times density than water is present in natural environment and contaminate the surface and ground water (Tchounwou et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Seasonal Variation of Water quality and Heavy Metal Pollution Index of 5 Ponds of Raipur City, India

Dash

Mishra

Pattanaik

2022

Preprint

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Increasing population, rapid urbanisation, unexpected climate shift, depleting water level, anthropogenic activities brought down water stress and pollution level in many countries, especially in cities. Pond as an ecosystem plays crucial role in these cities, not only to recharge ground water but also facilitate urban residents in many terms. Inspite of technological advancement to measure the pollution and give solution, the policies are lacking effective implementation due to improper information. Eight heavy metals were investigated during 2016-17 across 4 seasons, in a standard laboratory testing for 5 selected aquatic ponds of Raipur city, India. High positive correlation is found between copper and Zinc (r ≥0.993, P<.001), and lead with copper (r ≥ 0.753, p<.000). The HPI index is not good for all studied ponds during monsoon. Hence, wastewater and stormwater must be made contaminated free from heavy metals, before adding to the ponds to maintain the water level quality.

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Geochemical speciation of metals (Cu, Pb, Cd) in fishpond sediments in Batan Bay, Aklan, Philippines

Cited by 5 publications

References 54 publications

Development of Google Earth Engine Application for Spatiotemporal Analysis of Turbidity in Batan Estuary, Aklan Through the Harmonization of Landsat and Sentinel-2 Imagery

Development of Google Earth Engine Application for Spatiotemporal Analysis of Turbidity in Batan Estuary, Aklan Through the Harmonization of Landsat and Sentinel-2 Imagery

Ecological-Health Risk Assessments of Heavy Metals (Cu, Pb, and Zn) in Aquatic Sediments from the ASEAN-5 Emerging Developing Countries: A Review and Synthesis

Seasonal Variation of Water quality and Heavy Metal Pollution Index of 5 Ponds of Raipur City, India

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