Filters: Tags: {"scheme":"NA"} (X) > Types: OGC WMS Service (X)

Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Types Map Service (1) OGC WFS Layer (1) OGC WMS Layer (1) Contacts R Blaine McCleskey U.S. Geological Survey U.S. Geological Survey - ScienceBase Laboratory & Analytical Services Division Charles A Cravotta III Water Resources Categories Data (1) Tag Types Place (1) Tags (with Scheme=NA) na (1) View Results as: JSON ATOM CSV

Salinity and total dissolved solid determinations using PHREEQCI The total concentration of dissolved constituents in water is routinely quantified by measurements of salinity or total dissolved solids (TDS). However, salinity and TDS are operationally defined by their analytical methods and are not equivalent for most waters. Furthermore, multiple methods are available to determine salinity and TDS, and these methods have inherent differences. TDS is defined as the mass of anhydrous residue remaining in a sample vessel after evaporation and subsequent oven drying at a defined temperature. Salinity is a measure of the mass of dissolved salts in a given mass of solution. In addition, there are approaches that quantify the total solute (TS) concentration, including gases. PHREECI... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: NA, USGS Science Data Catalog (SDC), Water Quality, conductivity, specific conductance, All tags... transport number, Fewer tags