Potentiometric Determination of saccharin in Dietary Products Using a Coated-carbon Rod Ion-selective Electrode

A Simplified Spectrophotometric Method for Routine Analysis of Saccharin in Commercial Noncaloric Sweeteners

“…To fulfill the requirements of quality control, several analytical methods have been described to determine saccharin. Included among these are polarography ( , ), gravimetry (), derivative ultraviolet spectrophotometry (), high-performance liquid chromatography (HPLC) ( 3 , − , potentiometry ( − ), and visible spectrophotometry ( − ). However, most of these methods are time-consuming or require expensive equipment and, consequently, are not ideal for routine analysis.…”

Flow-through spectrophotometric sensor for the determination of saccharin in low-calorie products

“…Saccharin can be determined titrimetrically after precipitation with AgNO 3 (Amer et al 1978) or by potentiometric titration with HgNO 3 (Fatibello-Filho and Moraes 1993). Different voltammetric techniques have been used to determine saccharin, including differential pulse polarography (Holak andKrinitz 1980, Geissler et al 1981), cyclic voltammetry (Igumnov et al 1998) and potentiometry (saccharin electrode) (Fatibello-Filho and Aniceto 1997). Different indirect (Thomas et al 1989) and ion-pair extraction based (Herna´ndez et al 1985) spectrophotometric methods have also been proposed for saccharin determination.…”

Flow injection potentiometric determination of saccharin in dietary products using a tubular ion-selective electrode

“…A metallic screw was fixed in the external electrode body, and all remaining area was insulated with an epoxy resin coating as is depicted in Figure 1. The coating solutions were prepared [5] by dissolving 0.440 g PVC in 10 mL of tetrahydrofurane (THF) following prior addition of dibutylphtalate (DBPh) and the ion pair [toluidine blue O][saccharinate] 2 as follows: (a) 2% ion pair, 68% DBPh, and 30% PVC; (b) 3% ion pair, 67% DBPh, and 30% PVC; (c) 4% ion pair, 66% DBPh, and 30% PVC; (d) 4.5% ion pair, 65.5% DBPh, and 30% PVC; (e) 5% ion pair, 65% DBPh, and 30% PVC; (f) 10% ion pair, 60% DBPh, and 30% PVC; and (g) 20% ion pair, 50% DBPh, and 30% PVC.…”

“…Chloroform was evaporated in a rotaevaporator before use. The solid obtained with each pH condition was used to prepare the membrane material of the tubular ion-selective electrode as previously described [5]. The solutions were deposited 3-4 times directly in hole walls using a dropper.…”