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 fast(a) samplings 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. e-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 unshakable samples (sediments, corals) by Fourier transform infrared spectroscopy (FTIR) coupled to the occur attenuated reflectance (ATR) technique is described. Compared to other techniques, the proposed method is not based on the measurement of carbon dioxide evolved by combustion or acidification of the sample, but on the control measurement of carbonate present in the sample. For this reason, the method by FTIR-ATR spectroscopy does not require any chemical pre-treatment. The proposed method allows determination of carbonate in the range 6 hundred% (w/w) as Na2CO3 and gives comparable with(predicate) results with the determination of inorganic carbon by elemental abstract. www.rsc.org/analyst frozen (220 °C) until the summary.

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 spectropho tometer. For the ATR spectra a even ZnSe l! echatelierite assistant (Pike Technology model with a 45° incidence cant over 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 hold out a full essay, order it on our website: BestEssayCheap.com

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