Department of Civil and Environmental Engineering, American University of Beirut, Beirut, Lebanon.
Environ Monit Assess. 2011 Jan;172(1-4):275-85. doi: 10.1007/s10661-010-1333-7. Epub 2010 Feb 11.
Thirty-two domestic bottled water brands were analyzed for various physico-chemical as well as bacterial water quality parameters. Recorded results were compared with the Lebanese Standards Institution standards of quality and standards of identity as well as various international water standards for bottled waters. Results showed a widespread in the characteristics of investigated bottled waters, yet the majority met the different bottled water standards for physico-chemical parameters except for pH (4 brands), hardness (2 brands), and calcium (2 brands). All samples showed negative growth for fecal coliforms, yet 18.8% (N = 6) and 59.4% (N = 19) of the samples revealed positive results for total coliforms and heterotrophic plate count at 37°C, respectively. Generated Piper diagrams revealed that the majority of investigated waters are of calcium-magnesium bicarbonate type; some brands were rich in sodium-potassium chloride, and few were of the mixed type. Comparison of the study results with reported label values indicated good agreement with stated pH values but considerable variation for dry residue, Mg, Na, K, Ca, Mg, HCO₃, Cl, and SO₄. Identification labels showed varying compliance with the Lebanese Standards Institution standards of identity.
对 32 个国产瓶装水品牌的各种理化和细菌水质参数进行了分析。记录的结果与黎巴嫩标准协会的质量标准和身份标准以及各种国际瓶装水标准进行了比较。结果表明，所调查的瓶装水的特性差异很大，但除了 pH 值（4 个品牌）、硬度（2 个品牌）和钙（2 个品牌）外，大多数品牌都符合不同的瓶装水理化参数标准。所有样本的粪便大肠菌群均呈阴性生长，但总大肠菌群和 37°C 异养平板计数的阳性结果分别为 18.8%（N=6）和 59.4%（N=19）。生成的 Piper 图表明，所调查的大多数水样属于钙镁碳酸氢盐型；一些品牌富含钠-钾氯化物，少数为混合型。将研究结果与报告的标签值进行比较表明，与所声明的 pH 值有很好的一致性，但干残渣、Mg、Na、K、Ca、Mg、HCO₃、Cl 和 SO₄ 的变化较大。标识标签显示与黎巴嫩标准协会的身份标准有不同程度的一致性。
