Determination of metals in soft drinks packed in different materials by ETAAS

Abstract

The present work proposes a method for the direct determination of Al, Cu, Cr, Fe and Ni in Brazilian carbonated soft drinks by electrothermal atomic absorption spectrometry (ETAAS). Samples of different flavors packed in containers made of different materials (polyterephthalate ethylene and glass bottles, and aluminum and steel cans) were analyzed. The method was optimized by building up pyrolysis and atomization curves in sample medium and by evaluating the calibration approach. Under optimized conditions, recoveries in the range of 92-104% were obtained in the evaluation of method accuracy. The limits of quantification for Al, Cu, Cr, Fe and Ni were 2.3, 0.93, 0.17, 0.90 and 1.2 μg L(-1), respectively. Also, the impact of the material used in the packaging and flavor on the concentrations of each metal in the samples was evaluated. It was proved that neither flavor nor packaging material affected the concentrations of Al and Fe in the samples. On the other hand, the packaging material influenced the concentration of Cu, Cr and Ni, and only the flavor affected the concentration of Cu in the samples. These conclusions were based on the data obtained from the application of a two-way ANOVA evaluation at 95% confidence level.

Heavy metals content in some non-alcoholic beverages (carbonated drinks, flavored yogurt drinks, and juice drinks) of the Egyptian markets

“…Generally, concentrations of Cu, Fe, Ni and Mn were higher in cans bottles than in plastic bottles. Also, the results obtained by Francisco et al [36] indicated that the metals concentration was higher in the canned carbonated drinks than in the plastic bottled carbonated drinks. This finding supports the assumption that the metals may migrate from the packaging materials to the packaged food or drink [37].…”

“…Although, the levels of Fe in the analyzed samples were above the safe limit of Fe in drinking water (0.3 mg kg −1 ) according to WHO [54], these levels were below the iron requirement for the human body (10–50 mg per day) as recommended by FAO [56]. These high concentrations of Fe in the analyzed samples may be returned to the release of Fe element from the metallic containers which used in the preparation of flavored yogurt drinks, juice drinks and carbonated drinks [35,57] or because of the normal existence of Fe in the raw material used in the production [36].…”

Soft Drink Supply Chain Sustainability: A Case Based Approach to Identify and Explain Best Practices and Key Performance Indicators

“…Soft drinks generally include non-alcoholic beverages, such as bottled water, sugar-sweetened beverages, carbonated beverages, sport drinks, energy drinks, diet drinks, fruit beverages, juice drinks and fruit-flavored drinks [19]. As shown in Figure 1, SDSCs present a multi-stage structure.…”

Study on Speciation of As, Cr, and Sb in Bottled Flavored Drinking Water Samples Using Advanced Analytical Techniques IEC/SEC-HPLC/ICP-DRC-MS and ESI-MS/MS

“…Drinking water stored in green bottles may contain higher amounts of chromium in comparison with the same water stored in transparent bottles [4,7]. Chromium has also been found in various soft drinks and juices stored in various containers (PET, glass, steel, or aluminum) [25,26,27]. Not only does the material or color of the bottle determine the leaching of those elements, but also storage conditions, such as the temperature or sunlight exposure and time of storage [28].…”