Background: Iran is located within the dry and semi dry regions, thus almost 90% of the required water is secured via the use of groundwater. Owing to the increasing pollution of water resources, this study was performed to evaluate water quality pollution indices for heavy metals (As, Zn, Pb and Cu) contamination monitoring in Toyserkan Plain during spring and summer in 2012. Methods: A tot...

An ex-situ experiment to assess the metal extractive potential of fourteen agriculture plants (Vigna unguiculata, Gossypium hirsutum, Jatropha curcas, etc.) was conducted on Magnesite mines which had above permissible levels of Cadmium and Lead. There was no much difference in the total chlorophyll a and b, carbohydrate and protein contents in the plants grown in the mining soil and adjacent co...

This work reports the optical properties of surface plasmon resonance (SPR) based on metal-insulator-metal (MIM) structure towards a refractive index sensor. The MIM-SPR operating near infrared region consists lateral periodicity subwavelength gold patterns placed stack thin silica spacer and silver film (acting as reflector) silicon substrate. reflection spectra electric field distributions st...

Spectroscopic ellipsometry together with an effective medium model is used to determine simultaneously the effective refractive index, thickness, and metal volume fraction of thin nanocomposite films. The films are formed by Bi nanocrystals embedded in amorphous matrices, either semiconducting ~Ge! or dielectric (Al2O3). For the Bi:Ge films ~metal in an absorbing host!, the values obtained for ...

Xiawanggang River region is considered to be one of the most polluted areas in China due to its huge amount discharge of pollutants and accumulation for years. As it is one branch of Xiang River and the area downstream is Changsha city, the capital of Hunan Province, the ecological niche of Xiawangang River is very important. The pollution treatment in this area was emphasized in the Twelfth Fi...

in this study, the mineralogical composition and concentration of heavy metals in surfacesediment of north west persian gulf (musa estuary and hendijan coastline) were investigated. fifteensampling sites were selected and the sediment samples were collected using peterson grab sampler in august2013. xrd analyses demonstrated that the sediments of study area are principally composed of calcite,q...

This paper focuses on heavy metal distribution patterns in sediments of central Guilan (CG) and east Mazandaran (EM) in the south Caspian Sea coasts, north of Iran. Sediment sub-samples were retrieved from core and surficial samples in different environments of marine and coastal lagoons as well as coastal outcrops. Inductively Coupled Plasma Mass Spectrometry and Atomic Emission Spectrometry (...

Corrosion is a physicochemical reaction occurring between the metal and its surroundings, which usually has an electrochemical nature and results in changes in the properties of the metal. The corrosive water dissolves the pipe’s material during flowing and this causes many problems. This study investigated the potential of corrosion and scaling of 46 water supply resources in the villages of S...

The aim of this research is to characterize the optical properties of heavy metal ions (Hg, Cu, Pb and Zn) using surface plasmon resonance (SPR) technique. Glass cover slips, used as substrates were coated with a 50 nm gold film using sputter coater. The measurement was carried out at room temperature using Kretchmann SPR technique. When the air medium outside the gold film is changed to heavy ...