You are here:
Method 366.0 Determination of Dissolved Silicate in Estuarine and Coastal Watersby Gas Segmented Continuous Flow Colorimetric Analysis
Citation:
Zhang, J. AND G. A. Berberian. Method 366.0 Determination of Dissolved Silicate in Estuarine and Coastal Watersby Gas Segmented Continuous Flow Colorimetric Analysis. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-15/010, 1997.
Impact/Purpose:
see description
Description:
This method provides a procedure for the determination of dissolved silicate concentration in estuarine and coastal waters. The dissolved silicate is mainly in the form of silicic acid, H SiO , in estuarine and 4 4 coastal waters. All soluble silicate, including colloidal silicic acid, can be determined by this method. Long chain polymers containing three or more silicic acid units do not react at any appreciable rate1, but no significant amount of these large polymers exists in estuarine and coastal waters.2,3 This method is based upon the method of Koroleff,4 adapted to automated gas segmented continuous flow analysis.5-7