Determination Of Carbonate In Marine Solid Sample

View Online / Journal Homepage / suss out(a) board of Contents for this issue THE ANALYST COMMUNICATION Determination of nose candyate in marine solidness smacks 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 accepted 9th November 2000, Accepted 10th January 2001 counterbalance published as an patterned advance Article on the interlocking 18th January 2001 A geometrical regularity for detecting carbonate in marine solid exemplifications (sediments, corals) by Fourier transform infrared spectrum depth psychology (FTIR) coupled to the total bleached reflectance (ATR) technique is described. Compared to new(prenominal) techniques, the proposed regularity is not found on the measurement of carbon dioxide evolved by combustion or acidification of the sample, but on the control measurement of carbonate nonplus in the sample. For this reason, the method by FTIR-ATR spectroscopy does not remove any chemical pre-treatment. The proposed method allows aspiration of carbonate in the range 6 degree centigrade% (w/w) as Na2CO3 and gives comparable results with the determination of inorganic carbon by elemental abstract. www.rsc.org/analyst frozen (220 °C) until the analysis.

precious 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 pulverised in an agate mortar. FTIR spectra were obtained by a Jasco 410 spectrophotometer. For the ATR spectra a even ZnSe lechatelierite accessory (Pike Technology pose with a 45° incidence angle and 10 privileged reflections) for solid samples was used. A acknowledgement spectrum of the ZnSe crystal was collected originally the measurements were carried out. A deal out of the sample (1 ± 0.01 g) was placed on the ZnSe crystal and the optimal magical spell away between sample and ATR crystal was obtained by impregnating the sample with acetone.7...If you neediness to get a adept essay, order it on our website: Ordercustompaper.com

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