CHEMICAL SPECIATION OF METALS IN SEDIMENT AND THEIR BIOACCUMULATION IN FISH ON THREE RIVERS AROUND DHAKA CITY, BANGLADESH
Published In: INTERNATIONAL CONFERENCE ON ADVANCES IN CIVIL, STRUCTURAL, ENVIRONMENTAL AND BIO-TECHNOLOGY
Author(s): MD HABIBULLAH-AL-MAMUN , MD KAWSER AHMED , MD SAIFUL ISLAM , MOHAMMAD RAKNUZZAMAN , SHIGEKI MASUNAGA
Abstract: As a forward step to understand the metal bioaccumulation in fish species, a study of trace metal speciation of sediment was achieved. Trace metals were measured in sediments and two fish species, Heteropneustes fossilis and Trichogaster fasciata by using inductively coupled plasma mass spectrometer (ICP-MS). Abundance of total trace metals in sediments varied in the following decreasing order: Cr > Ni > Pb > Cu > As > Cd. Sequential extraction tests revealed that the studied metals were predominantly associated with the residual fraction, followed by the organically bound phases. The range of metal content in fishes were Cr (1.8–4.8), Ni (1.0–3.1), Cu (2.5–7.2), As (0.22–0.43), Cd (0.011–0.068) and Pb (0.85–2.7 mg/kg fw), respectively. The rank of biota-sediment accumulation factors (BSAFs) for both species were in the descending order of Cu > Pb > As > Ni > Cr > Cd. Metals accumulation in fish exceeded the international permissible standards suggests that these species are not suitab
- Publication Date: 09-Mar-2014
- DOI: 10.15224/978-1-63248-001-9-05
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RAINWATER QUALITY ANALYSIS IN SELECTED AREAS OF EASTERN AND NORTHEASTERN INDIA
Published In: INTERNATIONAL CONFERENCE ON ADVANCES IN CIVIL, STRUCTURAL, ENVIRONMENTAL AND BIO-TECHNOLOGY
Author(s): ABHIK GUPTA , BIDISHA CHAKRABORTY
Abstract: Rainwater is an important source of fresh water especially for those who live in rural areas, where water use is limited due to scarcity or where surface and underground water quality is poor. The growing trend of industrialization has marked impact on the atmospheric chemistry around the globe. Such impacts are also predicted for developing countries like India. Rainwater quality analysis is, therefore, carried out to understand the problems of rainwater contamination with various pollutants. In the present study rainwater quality has been monitored at six different sites in Eastern and Northeastern India (i.e. Irongmara, Kolkata, Kharagpur, Dolaigaon, Bongaigaon, BGR Township) with respect to their physico-chemical parameters. The samples were collected using PVC bottles and the parameters measured were pH, electrical conductivity (EC) and nitrate. The mean pH value of the rainwater obtained was 5.91±0.49 during the sampling period. The mean conductivity value of the rainwater during
- Publication Date: 09-Mar-2014
- DOI: 10.15224/978-1-63248-001-9-06
- Views: 0
- Downloads: 0