Naslov
Surface and capillary effects on detection limits of chromophoric analytical systems

Autori
Grdinić, Vladimir ; Luterotti, Svjetlana ; Stefanini Orešić, Laila

Izvornik
Microchemical Journal (0026-265X) 28 (1983), 1; 107-117

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Detection limit; chromophoric analytical system; surface effects; capillary effects

Sažetak
Sorption and capillary effects of a solid supporter in microqualitative analysis can be studied using suitable chromophoric analytical systems. The idenitication limits (LI) of various analytical tests have been determined applying several types of microqualitative supporters of ion-exchange resin group and filter paper. The differences in LI values can be explained by the differences in phase volumes and areas in which the analytical reaction product (AR) accumulates. Accumulation of AR by sorption and division of AR by capillary spreading have the opposite effects on LI values. When AR is colored complex the place of its formation in the identification test has also significant effect on LI values. However, it is difficult to correlate the sorption of AR on a supporter to the conditions of its formation in the solution and to the ionic character of the complex. Also, no relationship between simple physical properties of supporters and detection limits developed. The experimental techniques applied (spot test, resin spot test, ring test) affect the sensitivity of the microqualitative analysis significantly.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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