Determination Of Carbonate In Marine Solid Sample

View Online / Journal Homepage / Table of Contents for this issue THE psychopsychoanalyst COMMUNICATION Determination of change in marine straightforward adjudicates by FTIR-ATR spectrometry Mauro Mecozzi,* Eva Pietrantonio, Marina Amici and Giulia Romanelli Istituto Centrale per la Ricerca Scientifica e Tecnologica Applicata al Mare, via di Casalotti n. 300, 00166 Roma, Italy. electronic mail: mecoma@rdn.it Received 9th November 2000, Accepted 10th January 2001 first published as an Advance Article on the net 18th January 2001 A regularity for detecting change in marine unassailable samples (sediments, corals) by Fourier transform infrared spectroscopy (FTIR) coupled to the integral attenuated reflectance (ATR) technique is described. Compared to other techniques, the proposed method is non based on the measurement of carbon dioxide evolved by fire or acidification of the sample, but on the control measurement of carbonate present in the sample. For thi s reason, the method by FTIR-ATR spectroscopy does non require any chemical pre-treatment. The proposed method allows determination of carbonate in the range 6 hundred% (w/w) as Na2CO3 and gives alike(p) results with the determination of inorganic carbon by elemental abstract. www.rsc.org/analyst frozen (220 °C) until the epitome.

Coral samples (Cladocora caespitosa) were collected at Civitavecchia (Tyrrhenian Sea). 2.2 FTIR analysis FTIR analysis was performed on samples previously dried at 40 °C for 24 h at least and because pulverized in an agate mortar. FTIR spectra were obtained by a Jasco 410 spectr ophotometer. For the ATR spectra a even ZnS! e watch crystal accomplice (Pike Technology model with a 45° incidence burden and 10 internal reflections) for solid samples was used. A reference spectrum of the ZnSe crystal was collected before the measurements were carried out. A deal out of the sample (1 ± 0.01 g) was placed on the ZnSe crystal and the optimal while out between sample and ATR crystal was obtained by impregnating the sample with acetone.7...If you neediness to force back a full essay, order it on our website: BestEssayCheap.com

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