Sediments are one of the biological indicators of the accumulation of heavy metals in aquatic ecosystems, which, due to the stability of a region, can well measure pollution. This research was conducted in 2018 with the aim of investigating heavy metals of Cobalt, Chromium, Manganese, Selenium and Molybdenum in sediments of Hooralazim wetland in Khuzestan province. A total of 27 sediment sample...

the aim of this paper is eliminating cr(vi) by natural hap. hap is a inexpensive material which is used from bovine critical bone ash in order to remove heavy metal ions like cr(vi). some experiments in different ph are performed (ph=2,3,7). maximum adsorption was appeared at ph=2, dosage=0.3 gr, c0=10 mg/l. cr(vi) removal depends on ph value and initial amount of cr(vi) result of experiments w...

One of the pollutants produced by gas and petrochemical industries in Assaluyeh region is heavy metals which, by entering of these industries into the Persian Gulf, has caused water and aquatic pollution. Therefore, in the present study were investigated the concentration of non-carcinogenic hazard quotient index (NHQI) of heavy metals (Fe, Cr, Pb, Cu, Zn, Cd, Se, Ni) in Persian Gulf waters and...