Trace metals in water samples: minimising contamination during sampling and storage

1998 ◽  
Vol 36 (3-4) ◽  
pp. 207-214 ◽  
Author(s):  
Massimo Gasparon
Keyword(s):  
Trace Metals ◽  
Water Samples ◽  
And Storage

scholarly journals Significance of building and plumbing specifics on trace metal concentrations in drinking water

1991 ◽  
Vol 18 (6) ◽  
pp. 893-903 ◽  
Author(s):  
Inderjit Singh ◽  
Donald S. Mavinic
Keyword(s):  
Drinking Water ◽  
Trace Metals ◽  
Trace Metal ◽  
Water Samples ◽  
First Flush ◽  
Single Family ◽  
Metal Concentrations ◽  
Building Height ◽  
High Rise ◽  
Family House

Samples were taken from 72 high-rise apartment suites (6 suites in 12 individual high-rise towers) and 60 single-family houses located within the Greater Vancouver Regional District. The influence of the following factors on trace metal concentrations in 1-L first-flush drinking water samples and “running” hot water samples was investigated: building height, location, plumbing age, type of plumbing, and type of building. Results of this survey show that with the exception of building height, all factors had a correlation with one or more of the trace metals investigated. The trace metals examined were lead, copper, iron, and zinc. Lead was influenced primarily by building type, copper by plumbing age and type of plumbing, and iron by location. Elevated lead levels were associated with high-rise samples. New copper plumbing systems resulted in high copper levels. Highest iron levels in the drinking water were measured in the East Vancouver location. Zinc did not show a distinct correlation with any of the factors investigated. Brass faucets were the primary source of zinc in tap water. They also contributed substantially to the lead detected in the 1-L first-flush sample. Metal concentrations measured in the high-rise and house samples were compared with the U.S. Environmental Protection Agency's (USEPA) maximum contaminant levels (MCLs) and the proposed “no-action” level for lead. In high-rise samples, the 0.01 mg/L “no-action” level proposed for lead was exceeded in 43% of the samples, and 62% of the samples exceeded the current 1.0 mg/L MCL standard for copper. In single-family house samples, these values were 47% and 73%, respectively. The average lead concentrations were 0.020 mg/L for all high-rise samples and 0.013 mg/L for house samples. Regulatory levels stated above would still be exceeded in 6% of the cases for lead and 9% of the cases for copper, even after prolonged flushing of the tap in a high-rise building. In all cases associated with single-family houses, flushing the cold water tap for 5 minutes was successful in achieving compliance levels. Key words: aggressive water, compliance, corrosive, drinking water, first-flush, GVRD, high-rise, single-family house, trace metals, USEPA.

scholarly journals IN SITU DETERMINATIONS OF pH IN SOME LAKES

1971 ◽  
Vol 2 (3) ◽  
pp. 133-145 ◽  
Author(s):  
OLAV GRÖTERUD
Keyword(s):  
Water Samples ◽  
And Storage ◽  
In Situ Technique

pH has been determined in some lakes by using an in situ technique. pH has also been measured in the usual way in the field and in the laboratory. These measurements, together with the determinations in situ, made it possible to get information about changes of pH in the water samples during sampling, measuring, and storage. The microstratification of pH has also been investigated by means of in situ determinations.

Synthesis of a novel chelating resin and its use for selective separation and preconcentration of some trace metals in water samples

2009 ◽  
Vol 169 (1-3) ◽  
pp. 593-598 ◽  
Author(s):  
Şerife Tokalıoğlu ◽  
Vedat Yılmaz ◽  
Şenol Kartal ◽  
Ali Delibaş ◽  
Cengiz Soykan
Keyword(s):  
Trace Metals ◽  
Water Samples ◽  
Selective Separation ◽  
Chelating Resin ◽  
Separation And Preconcentration

Sampling and Storage of Natural Water for Trace Metals

1987 ◽  
Vol 18 (3) ◽  
pp. 209-244 ◽  
Author(s):  
Ralph Sturgeon ◽  
Shier S. Berman ◽  
Klaus Kremling
Keyword(s):  
Trace Metals ◽  
Natural Water ◽  
And Storage

Preservation and Storage of Water Samples

2003 ◽  
Vol 33 (1) ◽  
pp. 31-44 ◽  
Author(s):  
Magdalena S˙liwka-Kaszyńska ◽  
Agata Kot-Wasik ◽  
Jacek Namieśnik
Keyword(s):  
Water Samples ◽  
And Storage
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