To quantify “truly dissolve” phases of solute concentrations, groundwater and stream water samples collected at the Shale Hills Critical Zone observatory were filtered a sequence of filters with different pore sizes (1μm, 0.45 μm, 0.22 μm, 100KDa, and sometimes 1 KDa). Approximately 1L of water samples were taken at the Shale Hills CZO. The samples were retrieved to the laboratory within an hour and were filtered at the laboratory. The samples were filtered:
Filter pore size filter material filter manufacture filtration method
1μm Cellulose nitrate membrane filters Whatman vacuum filtration
0.45 μm Polyethersulfone membrane filter Pall Corporation vacuum filtration
0.22 μm Polyethersulfone membrane filter Pall Corporation vacuum filtration
100KDa Regenerated Cellulose filter EMD Millipore ultra-filtration
1KDa Regenerated Cellulose filter EMD Millipore ultra-filtration
The filtrates were acidified (1% v/v) using Optima Nitric acid. Major cations and silica were analyzed on an inductively coupled plasma–optical emission spectrometer (ICP– OES).
groundwater chemistry, stream water chemistry, sequential filtration
XML is in ISO-19115 geographic metadata format, compatible with ESRI Geoportal Server.
Citation for This Dataset
The following acknowledgment should accompany any publication or citation of these data: Logistical support and/or data were provided by the NSF-supported Susquehanna Shale Hills Critical Zone Observatory.
Citation for This Webpage
Brantley, Susan L.; Kim, Hyojin (2015). "CZO Dataset: Shale Hills - Groundwater Chemistry, Stream Water Chemistry (2015)." Retrieved 05 Apr 2020, from http://criticalzone.org/national/data/dataset/5273/
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† Dataset Creators. Defined as the people who are responsible for designing, collecting, analyzing and providing quality assurance for a dataset. The creators of a dataset are analogous to the authors of a publication, and datasets should be cited in an analogous manner following the emerging international guidelines described at http://www.datacite.org/whycitedata.