The analytical performance of the ETV was tested and compared with that of a PFA pneumatic nebulizer with a double membrane desolvator (DMD).
The limits of detection of the ETV were obtained in the range of 3.4 ng to 758 ng for Zn, Cu, Co, Fe, and Mg, while those of the PFA nebulizer were in the range of 53 ppb to 286 ppb.
For high solvent removal efficiency by the DMD, the plasma was easily turned on and sustained for more than 8 h while an aqueous sample solution was nebulized.
The dimensions of the torch are similar to that of a mini-torch, but there is no intermediate tube.
On the basis of the shape of the dose-effect curves obtained for cadmium and copper respectively, we can say that the toxic effects of the two metals are different and we can hypothesize that copper could exercise its toxic activity by inhibiting the ATP-driven proton pump and the function of the Cl Products: µflow PFA-100 nebulizer Abstract: Direct nebulization of an aqueous sample was successfully carried out in our laboratory in a lab-built low pressure-inductively coupled plasma (LP-ICP) using a double membrane desolvator (DMD).
For the particular LP-ICP used, rotational temperatures of selected diatomic molecules and excitation temperatures of Fe II and Fe I were measured.
The migration/elution order of the deoxynucleotides investigated was obtained by comparison with the migration/retention times of commercially available d NMP's.
Journal: Journal of Analytical Atomic Spectrometry Volume: 18 - Pages: 897-901 DOI: 10.1039/B303191H Products: µflow PFA-100 nebulizer Abstract: A typical electrothermal vaporization (ETV) using a tantalum was built for low-pressure ICP-AES.Measurements of the complexing capacity of solutions containing these organic ligands were carried out by a titration procedure followed by DPASV and toxicity tests were carried out using lysosomes isolated from rat liver.The complexing capacity of the physiological medium containing about 13 mg/L of humic acids, expressed as ligand concentrations, was 0.30 and 0.072 µmol/L for cadmium and copper respectively; the corresponding conditional stability constants were 4.2 x 10 increased from 22.3 to 45.3 µmol/L.The OH radical showed two rotational temperatures, low and high.The former were obtained in the range 800 to 1100 K, while the latter were obtained between 18 K.