Lead (Pb) and Cadmium (Cd) contents in mangrove crab Scylla serrata collected from several traditional markets in Medan City, Indonesia

Eri Yusni,Reni Z Sinaga

doi:10.13170/ajas.3.2.12622

Abstract

Magrove crab S cylla s errata lives in coastal area of city is susceptible to contaminate by heavy metals. Therefore, the objective of the present study was to examine the heavymetalcontentofLead (Pb)andCadmium(Cd)inmangrovecrab S . s errata obtained from several traditional markets in the Medancity, Indonesia. The measurementofheavymetalcontentwascarriedoutusingtheAtomicAbsorption SpectrophotometerwiththeFurnaceGraphmethod.The samples were collected from six marketsin Medan city i.e. Pancing, Sei Kambing, Petisah, Belawan, Jamin Ginting and Padang Bulan markets. Thereresultsshowed that the highestvalueofPbinwas in samplefrom Pancing (0.025mg kg -1 )and Sei Sikambing (0.025mg kg -1 ) Markets and lower was found in sample from Belawan market (0.013mg kg -1 ). In addition, the highestCadmium(Cd)contentisinPancing Market (0.023 mg kg -1 ) and lower Cd was from Belawan Market (0.101mg kg -1 ). It was concluded that heavymetalsPbandCdineachsampleofmangrove crabswereclassifiedaslow level andstill met thequality standard threshold. Therefore,themangrovecrabsampleisstillsafeforconsumptionand canbeanexportcommodity. Keywords : Mangrove crabs, heavy metals, pollution, AAS

Highlights

North Sumatra is one of the provinces that has potential in the fisheries sector, and one of the potency is mangrove crab Scylla serrata
The results showed that the Pb concentration was ranged between 0.016 to 0.025 mg kg-1 where the higher concentration was found in sample from Pancing and Sei kambing Markets, and the lowe concentration was in sample from Belawan Market (Table 1)
The Cd concentration ranges from 0.101 to 2.431 mg kg-1 where the higher concentration of Pb was found in sample from Pancing Market and lower concentration was in sample from Belawan Market (Table 2)

Summary

Introduction

North Sumatra is one of the provinces that has potential in the fisheries sector, and one of the potency is mangrove crab Scylla serrata. According to The Ministry of Maritime Affairs and Fisheries (KKP) the mangrove crab production of North Sumatra Province was 26,628 tons in 2008 and it was increased to 33,910 tons in 2012) (WWF Indonesia, 2015). Most of mangrove crab was harvested from wild population in several locations of coastal area near to Medan city the capital of North Sumatra Province. There are many activities carried out around the coastal areas waters of Medan city, such as industrial activities, agriculture, fisheries, ports and domestic activities that potentially contaminate this areas. One of the potential pollutant is heavy metals. Coastal areas are very susceptible for pollution by heavy metals (Dudani et al, 2017; Almiqrhi, 2018)

Objectives

Methods

Results

Conclusion