Open AccessInfluence of packaging and conditions of storaging on content of mineral water Guber-Srebrenica
Author(s) -
Dragana Blagojević,
Dragica Z. Lazić,
Branko Škundrić,
Jelena V. Škundrić,
Ljiljana Vukić
Publication year - 2008
Publication title -
hemijska industrija
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.147
H-Index - 19
eISSN - 2217-7426
pISSN - 0367-598X
DOI - 10.2298/hemind0801025b
Subject(s) - ascorbic acid , chemistry , gravimetric analysis , conductometry , conductivity , atomic absorption spectroscopy , titration , water content , analytical chemistry (journal) , spectrophotometry , nuclear chemistry , environmental chemistry , chromatography , inorganic chemistry , organic chemistry , food science , geotechnical engineering , quantum mechanics , engineering , physics
Mineral waters are found in nature in greater depths most often in reduction conditions, so after surfacing their content alters in contact with oxygen, which is caused by oxidation of certain components. Due to this, efforts were made to make these waters more stabile so they could be used after certain time. This work monitors the stability of Guber (Argentaria)-Srebrenica water exposed to light and with addition of ascorbic acid. The methods of analysis and the parameters analyzed are: gravimetric (SO2-4, suspended solids, total dry residue at 180°C), conductometry (electric conductivity), volumetric (Al3+), spectrometric (SiO2) and atomic-absorption spectrophotometry (Fe2+, Mg2+, Mn2+, Zn2+, K+, Ca2+, Na+ i Cu2+). Obtained results of water analysis, after retaining water in PET (polyethylentereftalate) and glass bottles, in certain time intervals, show that significant changes of concentration of Fe2+, Al3+, K+, Ca2+, pH value and electric conductivity occurred. Concentration of iron Fe2+ has been slightly changed after 120 days, in sample stabilized with 0,2 g ascorbic acid, while concentrations of Al and K+ were changing the same as without adding of stabilizer. Samples of water in glass packaging without added stabilizer are less stable compared to samples which were retained in PET packaging