Cola soft drinks

Examples show the effect of 18% (but not 15%) of added water in preventing ignition when glycerol was dripped onto a hypochlorite (79% active chlorine) containing 2% of oil [1]. Ignition with brake fluid is also reported, in this case reaction is accelerated by cola soft drinks - which are dilute acids rather than just water [2]. 

Griffiths RR, Singer MR. Is caffeine a flavoring agent in cola soft drinks Arch Fam Med 2000 9 727-734. 

In the case of acids, students should also be aware that the reaction of diluted solutions can be beneficial stomach acid is diluted hydrochloric acid which is essential for the digestive process, citric acid or acetic acid are substances which are useful in the kitchen, phosphoric acid is an acidic ingredient of cola soft drinks, and very diluted sulfuric acid can often be found in mineral water. 

Fast Anion III A - Phosphoric and citric acids in cola soft drinks... 

Metrosep A Supp 1 HS is a special separator, which has been developed for rapid analysis of orthophosphate in cola soft drinks. Its short length of 50 mm and very low ion-exchange capacity also allow rapid analysis of some common inorganic anions in weakly contaminated sample matrices. The corresponding hyperbranched polymer, the lonPac Fast Anion IIIA (see Section 3.4.3), which has been developed for the same application, is more robust due to its chemistry and standard length of 250 mm. Moreover, it elutes citrate faster and can, therefore, be applied for analyzing diet cola drinks, too. 

Figure 3.76 Fast analysis of orthophosphate and citrate in a diet cola soft drink. Separator column lonPac Fast Anion IIIA column dimensions 250 mm x 3 mm i.d. column temperature 30 °C eluent 22 mmol/L KOH (EG) ...

In comparison to fruit Juices, beer, and wine, the matrix of soft drinks is not as problematic for their ion chromatographic characterization. In almost all cases, sample preparation is restricted to dilution with deionized water, degassing (for C02-containing soft drinks), and filtration (0.45 pm). This type of sample is exemplified in Figure 10.227, which shows the separations of inorganic anions in a cola soft drink. 

A much fester analysis of orthophosphoric acid in Cola soft drinks [343,344] is possible with the lonPac Fast Anion IIIA column, which was developed for this type of samples without applying any other type of sample preparation than... 

Figure 10.227 Separation of inorganic anions in a cola soft drink. Separator column Metro-sep Anion Dual 2 eluent 1.3mmol/L Na2C03 + 2 mmol/L NaHCOj flow rate 0.8 mL/min detection suppressed conductivity injection...

Figure 10.230 Separation of inorganic cations in a diet cola soft drink. Separator column lonPac CS12A with guard eluent methanesul-fonic acid gradient 16mmol/L isocratic for 5 min and then step to 40 mmol/L for 5 min flow rate 1 mlVmin detection suppressed...

Figure 10.232 Mixed-mode separation of typical organic additives in cola soft drinks. Separator column Acclaim Mixed-Mode WAX-1,...

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