Study on Laver grade classification based on photoacoustic method

Citation
H. Saito et al., Study on Laver grade classification based on photoacoustic method, ANAL SCI, 17, 2001, pp. S559-S562
Citations number
2
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
ANALYTICAL SCIENCES
ISSN journal
0910-6340 → ACNP
Volume
17
Year of publication
2001
Pages
S559 - S562
Database
ISI
SICI code
0910-6340(2001)17:<S559:SOLGCB>2.0.ZU;2-U
Abstract
Laver grade was appraised by the photoacoustic spectroscopy. The result sho ws that the grade of laver seems to have the relation with the shape of the absorption spectrum. The significant difference between dries and heated l aver was found in the wavelength range of 480-620nm. However, the absorptio n peaks due to Chrollophyl-a at 430 and 680 nm was observed not only for dr ied but also heated laver. The photoacoustic method has the advantage over the existing standard optical methods, i.e. transmittance or reflectance, w hich are hard to detect such clear peaks due to pigments, since the non-uni formity of the laver sheet surface directly affect on the measurements.