JournalLead Contamination of Multidisciplinary in the Waters Studies of the J. M. Jimenez, S. J. Tagaro, J. E. Tabotabo, Vol.Port 7,of7, IssueIssueMukas, No.No. , 1,1, pp.pp. 159-170,157-167 , AugustAugust 20182018 J. L. Catingub, C. M. Dacayana-Alvarez ISSN 23502350-7020-7020 (Print) ISSN 23622362-9436-9436 (Online) doi: http://dx.doi.org/10.7828/jmds.v7i1.1250

Lead Contamination in the Waters of the Port of Mukas, Kolambugan, Philippines

Joshua Marco Jimenez1, Simon Julsz Tagaro1, Joseph E. Tabotabo1, Joeniel L. Catingub1, Charity May Dacayana-Alvarez2

1College of Maritime Education, University, H. T. Feliciano St., City, Philippines 2Natural Sciences Department, College of Arts and Sciences, Misamis University, H. T. Feliciano St., Ozamiz City, Philippines Corresponding author: Joshua Marco Jimenez, email: [email protected]

Abstract

Due to human population increase, industrialization, use of fertilizers in agriculture and human-made activities, our bodies of water can be polluted with heavy metals such as lead. The aim of this study was to assess lead contamination in the waters of the Port of Mukas, Kolambugan, . Three sampling stations were established in the area and collection of water samples was done in replicates. The presence of lead was determined using atomic absorption spectroscopy. Results showed that the average lead concentration was 0.18 mg/L which exceeds the allowable limit value of 0.5 mg/L set by the Department of Environment and Natural Resources for toxic and deleterious substances in marine waters with beneficial usage. The high concentration of lead in the area might be due to the salvaging of ships which uses paints and welding equipment as well as leaded petrol cars and some discharges from industries and residential houses near the port. The results of this study may serve as baseline information for developing and implementing conservation policies or strategies to effectively manage the aquatic environment of the Port of Mukas and the at large. Keywords: industrialization, marine, paints, ships, spectroscopy

159 LeadJournal Contamination of Multidisciplinary in the Waters of Studies the Port of J. M. Jimenez, S. J. Tagaro, J. E. Tabotabo, Mukas,Vol. 7, KolambuganIssue No. 1, ,pp. Philippines 159-170, August 2018 J. L. Catingub, C. M. Dacayana-Alvarez ISSN 2350-7020 (Print) ISSN 2362-9436 (Online) doi: http://dx.doi.org/10.7828/jmds.v7i1.1250

Introduction Lead (Pb) is a toxic heavy metal whose widespread use has caused extensive environmental contamination and health problems in many parts of the world (Wu et al., 2016). It is a cumulative toxicant that affects multiple body systems, including the neurological, hematological, gastrointestinal, cardiovascular, and renal systems (World Health Organization, 2010). Lead poisoning is a real threat to the public health, especially in the developing countries (Assi et al., 2016). Anthropogenic activities have increased the flux of Pb into the marine environment. Despite low dissolved concentrations, a number of these metals can still pose human and ecological risks (Hatje et al., 2018). Human population increase, industrialization, use of fertilizers in the agriculture and man-made activities such as mining contribute to Pb contamination in marine waters (Ismail et al., 2016). Heavy metals such as Pb is becoming an increasingly severe threat to the naturally stressed marine ecosystem (Naser, 2013). Several reports of lead contamination near port areas in other parts of the world were documented (Lestari, 2004; Coban et al., 2009; Bozkurt et al., 2014; Mamon et al., 2016; Liu et al., 2017). The sources of Pb can be natural or anthropogenic (Nagajyoti et al., 2010; RoyChowdhury et al., 2018). However, the anthropogenic activities are those that introduce lead in excessive amount in the marine waters. Few studies on heavy metal pollution in seawater were conducted in the Philippines (Sia Su et al., 2009; Vinarao et al., 2014; Cruz et al., 2015; Besagas at al., 2015) that showed presence of Pb and other heavy metals. The amount of few of these heavy metals did not exceed the limit, but their bioaccumulation might be likely a threat to marine organisms (Cruz et al., 2015). Lead was not detected in the seawater of the coastal area of in island but bioaccumulation of this heavy metal was evident in bivalve samples (Abug et al., 2016). In seawater of Sarangani Coastline in Mindanao, the presence of Pb was below the limit but to ensure no incremental contamination of seawater, developmental and anthropogenic activities should be regulated (Dacera et al., 2018).

160 JournalLead Contamination of Multidisciplinary in the Waters Studies of the J. M. Jimenez, S. J. Tagaro, J. E. Tabotabo, Vol.Port of7, IssueMukas, No. Kolambugan, 1, pp. 157-167 Philippines, August 2018 J. L. Catingub, C. M. Dacayana-Alvarez ISSN 2350-7020 (Print) ISSN 2362-9436 (Online) doi: http://dx.doi.org/10.7828/jmds.v7i1.1250

Panguil Bay is the nearest bay in from Aurora, , , Lanao del Norte to Clarin, . It serves as a nursery ground for shellfish. However, this bay serves as the reservoir of contaminants coming from nearby residential houses, run-off from agricultural lands, and ships. The Port of Mukas is one of the two ports that lies in Panguil Bay and is being used extensively as a way of transport of most people from Misamis Occidental to other places in Northern Mindanao. It lies in Kolambugan bay along with populated areas nearby. Several streams are near the area such as the Polot River, Caromatan Creeks, Tinago Creek, Bulot River, Banisilon River, Catmon Creek, Titunod River, Sibuco Creek, Hinagdong River, and Tangiguiron Creek. Ro-Ro vessels are seen in the Port of Mukas being restored or salvaged by means of welding and repainting. Being a navigational area for domestic transport, there is a possibility that Panguil Bay can be contaminated with lead. Based on existing literature, there is no scientific study on heavy metal assessment in the Port of Mukas. It is imperative to determine the quality of the waters in the area taking into account the hazard that Pb may cause to the aquatic habitat and subsequently to human health. The aim of this study was to determine if the waters of the Port of Mukas is contaminated with Pb. The results of this study may serve as baseline information for developing and implementing conservation policies or strategies to effectively manage the aquatic environment of the Port of Mukas and the Panguil Bay at large.

Materials and Methods

Research design This research employed the descriptive design and survey method. Water sampling was conducted to determine the concentration of lead in the waters of the Port of Mukas following the standard method of water analysis.

161 LeadJournal Contamination of Multidisciplinary in the Waters of Studies the Port of J. M. Jimenez, S. J. Tagaro, J. E. Tabotabo, Mukas,Vol. 7, KolambuganIssue No. 1, ,pp. Philippines 159-170, August 2018 J. L. Catingub, C. M. Dacayana-Alvarez ISSN 2350-7020 (Print) ISSN 2362-9436 (Online) doi: http://dx.doi.org/10.7828/jmds.v7i1.1250

Study area This study was conducted in the Port of Mukas situated in Lanao del Norte province. The port lies in Kolambugan bay with several streams near the area such as the Polot River, Caromatan Creeks, Tinago Creek, Bulot River, Banisilon River, Catmon Creek, Titunod River, Sibuco Creek, Hinagdong River, and Tangiguiron Creek. Ro-Ro vessels are seen in the port restored or salvaged by means of welding and repainting. Lead contamination is possible in Panguil Bay being a navigational area for domestic transport. Nearby areas to the port are relatively populated. Three stations were established for water sampling (Figure 1). Station 1 is situated at 8o 10’ N latitude and 123o 84’ E longitude. Station 2 is at located at 8o 10’ N and 123o 84’ E. Station 3 is situated 8o 10’ N latitude and 123o 84’ E longitude. Before water sampling, permission from the Philippine Ports Authority and the local government unit of Mukas, Kolambugan was obtained.

Sample collection and analysis The water samples were collected in replicates from each of the three sampling stations established in the area. The samples were taken from a depth of 50.0 cm below the water surface using the polyethylene bottles (1.0 Liter). Sample bottles were rinsed three times with seawater before fully filling the bottles with water. The water samples were stored in a box with ice for transfer to the F.A.S.T. (First Analytical Services and Technical Cooperative) laboratory in City for analysis (Bozkurt et al., 2014). The presence of lead was determined using the atomic absorption spectroscopy. Sampling was conducted in the month of February 2017.

162 JournalLead Contamination of Multidisciplinary in the Waters Studies of the J. M. Jimenez, S. J. Tagaro, J. E. Tabotabo, Vol.Port of7, IssueMukas, No. Kolambugan, 1, pp. 157-167 Philippines, August 2018 J. L. Catingub, C. M. Dacayana-Alvarez ISSN 2350-7020 (Print) ISSN 2362-9436 (Online) doi: http://dx.doi.org/10.7828/jmds.v7i1.1250

Figure 1. Map showing the three sampling stations established at the Port of Mukas (Source: googlemap.com).

Result and Discussion

Figure 2 shows the lead concentration in the three sampling stations in the Port of Mukas. Results revealed that the average lead concentration in the area was 0.18 mg/L which exceeds the allowable limit value of 0.05 mg/L set by the Department of Environment and Natural Resources for toxic and deleterious substances in marine waters with beneficial usage (Department of Environment and Natural Resources, 2016). The results of this study agree with the findings of Nasr et al. (2006) in Aden port, Yemen which showed that lead has the highest concentration of all heavy metals assessed.

163 LeadJournal Contamination of Multidisciplinary in the Waters of Studies the Port of J. M. Jimenez, S. J. Tagaro, J. E. Tabotabo, Mukas,Vol. 7, KolambuganIssue No. 1, ,pp. Philippines 159-170, August 2018 J. L. Catingub, C. M. Dacayana-Alvarez ISSN 2350-7020 (Print) ISSN 2362-9436 (Online) doi: http://dx.doi.org/10.7828/jmds.v7i1.1250

Figure 2. Lead concentration in three sampling stations established at the Port of Mukas (DENR maximum allowable limit of Pb in seawater is 0.05 mL/g).

Lead is one of the toxic priority pollutants that commonly interferes with the beneficial usage of wastewater for irrigation and industrial application (Bozkurt et al., 2014). This metal has the capability to accumulate in the food chain and could impose adverse effects in marine organisms (Sabri et al., 2014). High concentration of lead in the Port of Mukas could be attributed to shipping and other anthropogenic activities in the area. The port has been used constantly as a way of transport and trading. Possible sources of lead in the area were observed during the time of sampling which include salvaging and restoring of ships using paints and welding equipment. Lead contamination could also be associated with leaded petrol from cars, boats, and some local discharges from industries (Pérez-López et al., 2003; Sangalang & Quinay, 2015). Use of leaded petrol (gasoline),

164 JournalLead Contamination of Multidisciplinary in the Waters Studies of the J. M. Jimenez, S. J. Tagaro, J. E. Tabotabo, Vol.Port of7, IssueMukas, No. Kolambugan, 1, pp. 157-167 Philippines, August 2018 J. L. Catingub, C. M. Dacayana-Alvarez ISSN 2350-7020 (Print) ISSN 2362-9436 (Online) doi: http://dx.doi.org/10.7828/jmds.v7i1.1250

production of lead-acid batteries and paints, soldering, ceramics and leaded glass manufacture in informal and cottage (home-based) industries and electronic waste can be a potential source of lead in the area (United Nations Environment Programme, 2008). Based on the results of the study, lead contamination is a major problem not only within the port area but also in nearby coastal places where residents could be mostly affected. Fishing is the main livelihood of the people living nearby. Consumption of contaminated fishes and other macroinvertebrates by fishers or other residents is deleterious to human health. Swimming is another cause of consuming lead for those who could drink water from the area. Lead contamination is also an environmental problem in other ports of the Philippines. Lead concentrations were detected in all the fishes, macroinvertebrates and water samples obtained from the coastal lagoon of Manila Bay (Sia Su et al., 2009; Vinarao et al., 2014). The concern over heavy metal pollution in the marine environment has become a rising concern due to the human activities that contribute significantly to the release of these heavy metals in the environment particularly in Manila Bay (Naser et al., 2008; Sia Su et al., 2009). Heavy metals in the environment are brought about primarily by anthropogenic sources although heavy metals are a natural part of the environment and provide numerous benefits to society (Skjelkvåle et al., 2001). The presence of the heavy metals in the seawaters of the Port of Mukas may be attributed to the local point sources and by the direct deposition of heavy metals from air pollution as the port is situated close to a highway. The residents dependent on the resources the waters could offer and the marine organisms along the coast are thereby at risk of the deleterious effects of Pb to health. Consumption of contaminated fishes and other macroinvertebrates by fishers or other residents is deleterious to human health. Children seen swimming near the port are also at risk of Pb intake.

165 LeadJournal Contamination of Multidisciplinary in the Waters of Studies the Port of J. M. Jimenez, S. J. Tagaro, J. E. Tabotabo, Mukas,Vol. 7, KolambuganIssue No. 1, ,pp. Philippines 159-170, August 2018 J. L. Catingub, C. M. Dacayana-Alvarez ISSN 2350-7020 (Print) ISSN 2362-9436 (Online) doi: http://dx.doi.org/10.7828/jmds.v7i1.1250

Conclusion and Recommendations

The water in the Port of Mukas is not safe for marine organisms and residents in the area and nearby places due to lead contamination. Since the concentration of lead exceeds the DENR recommended limit for the living aquatic resource, production could be greatly affected. Immediate action has to be undertaken in the area by the local government through the designated sectors to lower the lead concentration and restore the water qualities as well as its ecosystem functioning. The awareness campaign has to be immediately initiated to inform the public of the status of water in the area. Moreover, the area has to be further studied to characterize the water self-cleaning process, and to suggest procedures for the improvement of the cleaning processes. Regular monitoring has to be carried out by the local government unit and other sectors of the community to determine if the water in the Port of Mukas is free from lead contamination.

Acknowledgment

The authors extend their appreciation to the Research Office of Misamis University for the guidance. The Philippine Ports Authority in Ozamiz City and the local government of Mukas, Kolambugan are also acknowledged for permitting the conduct of this study.

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