a facile and highly efficient method have been developed for the preconcentration of the mercury content in crude oil and gasoline samples after digestion with microwave-assisted digestion. octadecyl silica membrane disk has been modified by the recently synthesized triazene ligand, (e)-1-(2-ethoxyphenyl)-3-(4-nitrophenyl) triaz-1-ene (ent), then the modified membrane was used for the preconcen...

The elements Fe, Cu, Mn, Zn, Cr, Ni, Pb and Cd were determined in the meat and skin of fish by Atomic Absorption Spectroscopy (AAS). The fish were grown in treated wastewater, Zayanderood river, and fisheries of Flavarjan and Babolsar. Arsenic and mercury in the samples were analyzed by Inductively Coupled Plasma Emission Spectroscopy and Cold Vapor AAS, respectively. The concentration of t...

Monitoring of mercury in environmental samples, with its proven toxicity on the food chain, requires sensitive and accurate analytical techniques. In this study, two methods for identification and quantification of total mercury in biological and sediment samples are compared: i) dry ash preparation and subsequent established procedures for Combustion Atomic Absorption Spectrometry, (AMA 254) ...

background: the objective of this work was developing a simple and stable time-based on-line setup for assessing the potential of mercury (hg) vapor adsorption of the commercial sorbents used in air sampling and control operation followed by cold vapor atomic absorption spectrometry (cvaas). methods: a special designed separation chamber was used where reduction of the injected hg (ii) solution...

Hair samples continue to be used extensively for biomonitoring of mercury (Hg) exposure. Routine methods require a bundle of 100-150 hair strands and involve chemical digestion. Recently, Hg analyzers that combine combustion, gold amalgamation, and atomic absorption spectrometry (C-GA-AAS) became commercially available. This method was shown to provide quick and sensitive measurements in solid ...

The aim of the study was to develop a new method for mercury determination from plants grown on mercury-polluted soils as well evaluate mobility and bioavailability in soil its transfer different plant organs (root, stem, leaves) three plants, such mustard (Sinapis alba), thyme (Thymus serpyllum) wild thyme. A cold vapor atomic absorption spectrometry (CV-AAS) detection developed. developed val...

Copyright © 2015 by The Geochemical Society of Japan. mercury in seawater can be an indicator of widespread underwater mineral deposits (Marumo et al., 2008; Tomiyasu et al., 2007). Therefore, deep-sea mercury monitoring is very important to both the caution of environmental pollution and the exploration of underwater mineral deposits. Due to their high sensitivity, cold vapor atomic absorption...

Multiwall carbon nanotubes, prepared by chemical vapor deposition, have an average diameter of 60-100 nm as shown by High Resolution Transmittance Electron Microscope, HR-TEM. The Multiwall carbon nanotubes (MWCNTs) were further characterized using X-ray Diffraction and Raman Spectroscopy. Mercury uptake capacity of MWCNTs was studied using batch adsorption method at different concentration ran...

Atomic absorption spectroscopy (AAS) is an analytical technique that Below Figure 1 is a block diagram of the major components of an atomic absorption. ATOMIC ABSORPTION SPECTROSCOPY TARANPREET SINGH MS12044 Chem. or Computer Schematic diagram of Atomic absorption spectrometer LINE. the flame atomic absorption photometry shows the presence of Ca, Cd, Co, Cu, Fe, Mg, Mn, Pb and Fig. 2. Schematic...

Three toxic heavy metals (Cd, Pb, and Hg) were analyzed in the newly found invasive species Canary Islands, Cronius ruber. Its high growth rate its widely varied diet are affecting marine ecosystem. The study was conducted using electrothermal vaporization atomic absorption spectrometry (GF-AAS) cold-vapor spectrophotometry (CV-AAS). Significant differences terms of location sex specimens, with...