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Demonstration/validation of the Snap sampler passive groundwater sampling device

December 31, 2011

Laboratory studies and a field demonstration were conducted to determine the ability of the Snap Sampler to recover representative concentrations of several types of inorganic analytes from ground water. Analytes included non-metals, transition metals, alkaline earth metals, alkali metals, and a metalloid. In the laboratory studies, concentrations of analytes in Snap Sampler samples were com-parable with concentrations of the analytes in samples collected from a standpipe (i.e., control samples). For the field demonstration, there were sampling events at the former Pease Air Force Base. Samples taken using a Snap Sampler were compared with samples collected using conventional low-flow purging and sampling and a regenerated cellulose passive diffusion sampler. Based upon statistical analyses, analyte concentrations were found to be equivalent to those in the low-flow samples with one exception – unfiltered iron, where concentrations were significantly higher in the Snap Sampler samples. Differences were most pronounced in samples collected from the two stainless steel wells and from wells with higher turbidity levels. Elevated turbidities may have resulted from installing additional sampling equipment (including the baffle, pump, samplers, and bottom weight) in the well before sampling. We will examine this issue further at our next test site.

Citation Information

Publication Year 2011
Title Demonstration/validation of the Snap sampler passive groundwater sampling device
Authors Louise Parker, Nathan Mulherin, Gordon Gooch, William Major, Richard Willey, Thomas E. Imbrigiotta, Jacob Gibs, Donald Gronstal
Publication Type Report
Publication Subtype Federal Government Series
Series Title Technical Report
Series Number ER-200630
Index ID 70206142
Record Source USGS Publications Warehouse
USGS Organization New Jersey Water Science Center