In general, sulphones and sulphonic acids show low S, emissivity in comparison with sulphides and thiols. The cause of the low sensitivity and a technique for enhancing the emission intensity are investigated in molecular emission cavity analysis. Sulphides and thiols are rapidly desulphurized with
Effect of cavity surface on S2 emission in molecular emission cavity analysis
β Scribed by Koichi Nakajima; Kyuji Ohta; Takeo Takada
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 784 KB
- Volume
- 270
- Category
- Article
- ISSN
- 0003-2670
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β¦ Synopsis
Alkali metal salts present in distilled water as impurities change the surface of a silica cavity from smooth to rough and groovy surface. The multi-peaked responses observed with a new cavity change into a single peak when the cavity is treated with alkali metal salts compounds. It is concluded that the effect of the alkali metal salt-treated cavity is mainly attributable to the roughness of the surface; the peak splitting is caused by aggregate formation and the roughness of the cavity surface enhances good dispersion and volatility of samples and suppresses peak splitting.
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Emission spectra of pN,Ndimethylamino benzonitrile (DMABN) in aqueous &cyclodextrine @CD) solutions are reported, In ECD two distinct kinds of emission are observed, one with enhanced nonpolar emission (at 355 nm) and the other exhibiting enhanced TICT emission (at 480 nm). The former is attributed