scholarly journals Iodine determination in mineral water using ICP-MS: method development and analysis of brands available in Israeli stores

2021 ◽  
Author(s):  
Vasiliy Rosen ◽  
Orit Gal Garber ◽  
Yona Chen
Keyword(s):  
Drinking Water ◽  
Water Samples ◽  
Mineral Water ◽  
Method Development ◽  
Molar Ratio ◽  
Icp Ms ◽  
Limit Of Quantitation ◽  
Drinking Water Samples ◽  
Bottled Mineral Water ◽  
Iodine Determination

Reliable iodine determination in drinking water samples has gained importance in the last few decades, mostly due to intensive use of both desalinized water that lacks several important nutritional elements, and bottled mineral water. ICP-MS is a sensitive, high-throughput method for iodine determination that must be performed under alkaline conditions because of the volatile nature of some iodine species. However, in water samples with high pH (>10), slow precipitation of calcium (Ca) and/or magnesium (Mg) carbonates leads to clogging of the ICP-MS nebulizer. We propose preventing this precipitation by adding the chelating agent ethylenediaminetetraacetic acid (EDTA) at 0.1% to a 2% ammonium hydroxide matrix. This concentration of EDTA sufficed for most drinking water samples studied, as long as a 1:1 molar ratio of EDTA to Ca+Mg concentration in the water was maintained. The limit of quantitation of the developed method for iodine was <0.1 µg L-1. The average iodine concentration in various brands of bottled mineral water sold in Israel was relatively low (7.67 ± 6.38 µg I L-1). Regular consumption of either desalinated water or bottled mineral water may induce iodine deficiency in Israeli consumers. Therefore, continuous follow-up of the iodine status in both tap and bottled water is strongly recommended.

scholarly journals Iodine determination in mineral water using ICP-MS: method development and analysis of brands available in Israeli stores

2021 ◽  
Author(s):  
Vasiliy Rosen ◽  
Orit Gal Garber ◽  
Yona Chen
Keyword(s):  
Drinking Water ◽  
Water Samples ◽  
Mineral Water ◽  
Method Development ◽  
Molar Ratio ◽  
Icp Ms ◽  
Limit Of Quantitation ◽  
Drinking Water Samples ◽  
Bottled Mineral Water ◽  
Iodine Determination

Reliable iodine determination in drinking water samples has gained importance in the last few decades, mostly due to intensive use of both desalinized water that lacks several important nutritional elements, and bottled mineral water. ICP-MS is a sensitive, high-throughput method for iodine determination that must be performed under alkaline conditions because of the volatile nature of some iodine species. However, in water samples with high pH (>10), slow precipitation of calcium (Ca) and/or magnesium (Mg) carbonates leads to clogging of the ICP-MS nebulizer. We propose preventing this precipitation by adding the chelating agent ethylenediaminetetraacetic acid (EDTA) at 0.1% to a 2% ammonium hydroxide matrix. This concentration of EDTA sufficed for most drinking water samples studied, as long as a 1:1 molar ratio of EDTA to Ca+Mg concentration in the water was maintained. The limit of quantitation of the developed method for iodine was <0.1 µg L-1. The average iodine concentration in various brands of bottled mineral water sold in Israel was relatively low (7.67 ± 6.38 µg I L-1). Regular consumption of either desalinated water or bottled mineral water may induce iodine deficiency in Israeli consumers. Therefore, continuous follow-up of the iodine status in both tap and bottled water is strongly recommended.

scholarly journals The occurrence of Aeromonas spp. in the bottled mineral water, well water and tap water from the municipal supplies

2008 ◽  
Vol 51 (5) ◽  
pp. 1049-1055 ◽  
Author(s):  
Denise de Oliveira Scoaris ◽  
Fernando Cezar Bizerra ◽  
Sueli Fumie Yamada-Ogatta ◽  
Benício Alves de Abreu Filho ◽  
Tânia Ueda-Nakamura ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Samples ◽  
Mineral Water ◽  
Tap Water ◽  
Indicator Bacteria ◽  
Well Water ◽  
Total Coliforms ◽  
Water Well ◽  
Artesian Water ◽  
Bottled Mineral Water

The aim of this work was to study the occurrence of Aeromonas sp in the bottled mineral water, well water and tap water from the municipal supplies. Positive samples were found for Aeromonas spp. 12.7% from the mineral water, 8.3% from the artesian water and 6.5% from the tap water. The recovery of Aeromonas spp. was significantly higher in the bottled mineral and artesian water than in the tap water from municipal supplies. The occurrence of the Aeromonas spp. did not correlate significantly with the contamination indicator bacteria (i.e. total coliforms) in the artesian water samples. However, a significant correlation was found between Aeromonas spp. and total coliforms in the both mineral water and tap water samples. The presence or absence of a correlation between the indicator bacteria and Aeromonas could reflect the occasional appearance of the pathogen in the drinking water and the different rates of survival and recovery of these agents compared with those fecal indicators. The finding that 41.6, 14.8 and 9.0 % of the artesian water, bottled mineral water and tap water, respectively, sampled in the current study failed to meet the Brazilian standard for total coliforms in the drinking water should therefore be of concern.

A study of method robustness for arsenic speciation in drinking water samples by anion exchange HPLC-ICP-MS

2002 ◽  
Vol 373 (7) ◽  
pp. 664-668 ◽  
Author(s):  
Jason A. Day ◽  
María Montes-Bayón ◽  
Anne P. Vonderheide ◽  
Joseph A. Caruso
Keyword(s):  
Drinking Water ◽  
Anion Exchange ◽  
Water Samples ◽  
Arsenic Speciation ◽  
Icp Ms ◽  
Anion Exchange Hplc ◽  
Drinking Water Samples

Temporal variability of disinfection by-products concentration in urban public water system

2013 ◽  
Vol 14 (4) ◽  
pp. 393-398
Keyword(s):  
Drinking Water ◽  
Water Samples ◽  
Temporal Variability ◽  
Water System ◽  
The Other ◽  
Major Constituent ◽  
System P ◽  
Public Water System ◽  
Drinking Water Samples ◽  
By Products

The occurrence of trihalomethanes (THMs) was studied in the drinking water samples from urban water supply network of Karachi city that served more than 18 million people. Drinking water samples were collected from 58 locations in summer (May-August) and winter (November-February) seasons. The major constituent of THMs detected was chloroform in winter (92.34%) and summer (93.07%), while the other THMs determined at lower concentrations. Summer and winter concentrations of total THMs at places exceed the levels regulated by UEPA (80 μg l-1) and WHO (100 μg l-1). GIS linked temporal variability in two seasons showed significantly higher median concentration (2.5%-23.06%) of THMs compared to winter.

scholarly journals Potential endocrine disruptor activity of drinking water samples

2015 ◽  
Vol 3 (1) ◽  
pp. e983384 ◽  
Author(s):  
Marize de Lm Solano ◽  
Cassiana C Montagner ◽  
Carolina Vaccari ◽  
Wilson F Jardim ◽  
Janete A Anselmo-Franci ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Samples ◽  
Endocrine Disruptor ◽  
Drinking Water Samples

scholarly journals Yeasts and filamentous fungi in bottled mineral water and tap water from municipal supplies

2007 ◽  
Vol 50 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Mirian Ueda Yamaguchi ◽  
Rita de Cássia Pontello Rampazzo ◽  
Sueli Fumie Yamada-Ogatta ◽  
Celso Vataru Nakamura ◽  
Tânia Ueda-Nakamura ◽  
...  
Keyword(s):  
Filamentous Fungi ◽  
Water Samples ◽  
Mineral Water ◽  
Tap Water ◽  
Health Hazard ◽  
Total Coliform ◽  
Species Level ◽  
Potential Health ◽  
Potential Health Hazard ◽  
Bottled Mineral Water

The main objective of this study was to analyse the occurrence of yeasts and filamentous fungi in drinking water as well as to investigate their correlation with the indicator bacteria of faecal pollution. Yeasts were detected in 36.6% and 11.6% of the bottled mineral on water dispensers and tap water samples from municipal system, respectively. Twenty-one (35.0%) of bottled mineral water and two (3.3%) of tap water samples were positive for filamentous fungi. For bottled mineral water 12 (20.0%) of 60 samples were positive for total coliform, compared with 3(5.0%)out of 60 samples from tap water. The mineral water from dispensers was more contaminated than tap water. Strains belonging to the genera Candida identified to the species level were C. parapsilosis, C. glabrata and C. albicans. Thus, bottled mineral water from water dispensers and tap water could be considered a possible transmission route for filamentous fungi and yeasts, and could constitute a potential health hazard, mainly to immunocompromised indivuals.

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