a series of transition metal complexes with two thiosemicarbazide schiff bases, 1-(4-dimethylaminobenzyl- idene)thiosemicarbazide (abtsc) and 1-(2-pyridincarboxyl-idene) thiosemicarbazide (tcts) were synthesized with co(ii), ni(ii), zn(ii), cd(ii) and ag(i) salts (chloride and acetate). these complexes were characterized by different methods including proton nuclear magnetic resonance (1hnmr), ...

The purpose of this study was to determine the Pb and Cd heavy metal content in sediments their relationship with marine biota Tulehu waters. method used a survey by sampling at three research stations based on representation different characteristics site. Station 1 Port (non-operating anthropogenic ship docker), 2 (ferry port) 3 Muara Sungai along measured using AAS (Atomic Absorption Spectro...

The dependence of the color of quartz and opal natural minerals, collected from different localities in the Republic of Macedonia (Alinci, Belutče, Budinarci, Mariovo, Sasa, Saždevo, Čanište, Češinovo, Zletovo) on their element composition is studied using Fourier transform infrared spectroscopy (FT IR), micro-Raman spectroscopy and atomic absorption spectrometry (AAS). In order to determine th...

Alloyed silver-gold nanoparticles were prepared in nine different metal compositions with silver/gold molar ratios of ranging from 90:10 to 10:90. The one-pot synthesis in aqueous medium can easily be modified to gain control over the final particle diameter and the stabilizing agents. The purification of the particles to remove synthesis by-products (which is an important factor for subsequent...

In Paraguay, research on arsenic contamination is still incipient. This study aimed to validate the analytical method for determination of total in soil samples by atomic absorption spectrophotometry with a hydride generation (HG - AAS). For its validation, blank sample was collected from an area null anthropogenic activity and, application, ten Tebicuary River basin. The were dried, sieved, ho...

We analyze the application of optical molasses to a thermal vapor cell to make and collect cold atoms. Such an arrangement would simplify the production of cold atoms by eliminating the difficulty of first having to produce and slow an atomic beam. We present the results of our calculations, computer models, and experimental work. As a guide for future work, general results are given to illustr...

in this study mercury was determined in canned tuna fish produced and distributed in iran after digestion by the standard methods of aoac. mercury contents in fish and canned tuna fish were determined by cold vapor atomic absorption spectrophotometry. the metal contents expressed in mg/kg wet weight for mercury varied from 0.017 to 0.394 (average of 0. 089) and 0.023 to 0.529 (average of 0.146)...

Metal ion analysis is an important aspect during water quality monitoring of either surface or ground water sources. In spite of the availability of several other metal ion analysis techniques for drinking water samples, today atomic absorption spectroscopic (AAS) method is most commonly being used due to the reproducibility of results, short analysis time, cost effective, lower level detection...