Die Untersuchung wurde durchgeführt, um die Konzentration von sechs Spurenmetallen zu bestimmen: Arsen (As), Kadmium (Cd), Chrom (Cr), Kupfer (Cu), Blei (Pb) und Zink (Zn) in Insekten (Periplaneta Americana, Chrysomya megacephala), Fischen (Lates calcarifer), Malacostracan (Penaeus monodon), Wasser und Sedimenten aus dem Küstengebiet von Sitakunda upazila. Die Analyse der Metalle zeigte, dass der Bereich von As (<80-8720), Cd (10-420), Cr (962-66008), Cu (34,1-65754), Pb (141-18000) und Zn (1088-211766) betrug. Mit Ausnahme von As war die Konzentration aller Metalle in allen Proben höher....

The research was conducted to determine six trace metals concentration, Arsenic (As), Cadmium (Cd), Chromium (Cr), Copper (Cu), Lead (Pb) and Zinc (Zn) in insects (Periplaneta Americana, Chrysomya megacephala), fish (Lates calcarifer), malacostracan (Penaeus monodon), water and sediments collected from coastal area of Sitakunda upazila. The analysis of metals showed that the range of As was (<80-8720), Cd was (10-420), Cr was (962-66008), Cu was (34.1-65754), Pb was (141-18000) and Zn was (1088-211766). Except As, all the metals concentration was higher in all samples. The accumulation power...

La recherche a été menée pour déterminer la concentration de six métaux traces, l'arsenic (As), le cadmium (Cd), le chrome (Cr), le cuivre (Cu), le plomb (Pb) et le zinc (Zn) dans les insectes (Periplaneta Americana, Chrysomya megacephala), les poissons (Lates calcarifer), le malacostracan (Penaeus monodon), l'eau et les sédiments recueillis dans la zone côtière de Sitakunda upazila. L'analyse des métaux a montré que la gamme de As était (<80-8720), Cd était (10-420), Cr était (962-66008), Cu était (34.1-65754), Pb était (141-18000) et Zn était (1088-211766). A l'exception de...

The research was conducted to determine six trace metals concentration, Arsenic (As), Cadmium (Cd), Chromium (Cr), Copper (Cu), Lead (Pb) and Zinc (Zn) in insects (Periplaneta Americana, Chrysomya megacephala), fish (Lates calcarifer), malacostracan (Penaeus monodon), water and sediments collected from coastal area of Sitakunda upazila. The analysis of metals showed that the range of As was (<80-8720), Cd was (10-420), Cr was (962-66008), Cu was (34.1-65754), Pb was (141-18000) and Zn was (1088-211766). Except As, all the metals concentration was higher in all samples. The accumulation power...

The concentration of metals accrued in water, sediment, insects (viz. C. megacephala and P. americana), crustaceans (viz. P. monodon and S. serrata), mollusk (viz. S. pharaonis) and marine fish (viz. L. calcarifer) collected from Kuakata, Patuakhali were evaluated using flame (Varian AA240FS), hydride-generation (Varian AAS240FS) atomic absorption spectrophotometer and Zeeman Varian graphite atomic absorption spectrophotometer (Varian AA240). Concentration of metals (viz. Arsenic, Chromium, Cadmium, Copper, Lead and Zinc) detected highest in sediment (14800 ppb) , Scylla serrata (250 ppb),...

Heavy metals and metalloids are persistent environmental pollutants that can be deleterious in excessive amounts; these destabilize ecosystems by inducing bio-accumulation in organisms. Efficacy of different doses of arsenic in the brain tissue of L. cuprina(Wiedemann) was observed through histological slide preparations by feeding and injectiontreatments as well as control. Arsenic-induced mortality was also observed for both the treatments and control flies. 0.01 ppm, 0.05 ppm, 0.1 ppm, 0.5 ppm, and 1 ppm of As were administered in the treatments. The mortality was observed for 72 hours and...