Assessment of trace metals in fish species of urban rivers in Bangladesh and health implications

Md Saiful Islam; Md Kawser Ahmed; Md Habibullah-Al-Mamun; Shigeki Masunaga

doi:10.1016/j.etap.2014.12.009

Assessment of trace metals in fish species of urban rivers in Bangladesh and health implications

Environ Toxicol Pharmacol. 2015 Jan;39(1):347-57. doi: 10.1016/j.etap.2014.12.009. Epub 2014 Dec 22.

Authors

Md Saiful Islam¹, Md Kawser Ahmed², Md Habibullah-Al-Mamun³, Shigeki Masunaga⁴

Affiliations

¹ Graduate School of Environment and Information Sciences, Yokohama National University, 79-7 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan; Department of Soil Science, Patuakhali Science and Technology University, Dumki, Patuakhali 8602, Bangladesh. Electronic address: islam-md.saiful-nj@ynu.jp.
² Department of Oceanography, University of Dhaka, Dhaka 1000, Bangladesh.
³ Graduate School of Environment and Information Sciences, Yokohama National University, 79-7 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan; Department of Fisheries, University of Dhaka, Dhaka 1000, Bangladesh.
⁴ Graduate School of Environment and Information Sciences, Yokohama National University, 79-7 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan.

PMID: 25553576
DOI: 10.1016/j.etap.2014.12.009

Abstract

Levels of six metals i.e. chromium (Cr), nickel (Ni), copper (Cu), arsenic (As), cadmium (Cd) and lead (Pb) in three fish species (Channa punctatus, Heteropneustes fossilis and Trichogaster fasciata) from three urban rivers in Bangladesh were measured. Concentrations of Cr, Ni, Cu, As, Cd and Pb in fish species were 0.75-4.8, 0.14-3.1, 1.1-7.2, 0.091-0.53, 0.007-0.13, and 0.052-2.7mg/kg ww, respectively. The analyzed metals were significantly different between species and seasons (p<0.05). The target hazard quotients (THQs) and carcinogenic risk (CR) for individual metal showed that As and Pb in muscle was particularly hazardous and potential risk for the low, medium and high fish consumer in Bangladesh. Some of the trace metals' concentrations are higher than the recommended value, which suggest that the water and fish of these rivers are not completely safe for human health.

Keywords: Bangladesh; Fish; Health risk; River; Trace metals.

MeSH terms

Adult
Animals
Arsenic / analysis*
Bangladesh
Environmental Monitoring
Fishes*
Food Contamination / analysis*
Humans
Metals, Heavy / analysis*
Muscles / chemistry
Risk Assessment
Water Pollutants, Chemical / analysis*

Substances

Metals, Heavy
Water Pollutants, Chemical
Arsenic