Research Project Title

Calcium and Magnesium in the Sediment of the Little Spokane River Watershed

Session Type

Poster Presentation

Research Project Abstract

The aim of this study was to analyze the content of calcium and magnesium in the sediment of the Little Spokane River catchment area in order to ascertain their influence in surface water and their accumulation in bottom deposits. River-bed sediment samples were collected from 3 sites on the Little Spokane River catchment at the Verbrugge Environmental Center, near Newport, WA and assessed for their calcium and magnesium content. Samples were processed by an HCl acid digestion technique. Analysis was carried out using flame furnace atomic absorption spectrophotometer (AAS), and results are expressed in milligram/kilogram. The mean concentration of Ca (436 ± 1.0 mg/kg ) remained within the levels of sediment quality guidelines given by Washington State. The samples which were analyzed for magnesium metal concentrations were unusable due to a percent yield of over 100%. Continuous monitoring of calcium and magnesium content in the sediment are proposed to detect seasonal changes.

Session Number

PS2

Location

HUB Multipurpose Room

Abstract Number

PS2-p

This document is currently not available here.

COinS
 
Apr 28th, 11:00 AM Apr 28th, 12:30 PM

Calcium and Magnesium in the Sediment of the Little Spokane River Watershed

HUB Multipurpose Room

The aim of this study was to analyze the content of calcium and magnesium in the sediment of the Little Spokane River catchment area in order to ascertain their influence in surface water and their accumulation in bottom deposits. River-bed sediment samples were collected from 3 sites on the Little Spokane River catchment at the Verbrugge Environmental Center, near Newport, WA and assessed for their calcium and magnesium content. Samples were processed by an HCl acid digestion technique. Analysis was carried out using flame furnace atomic absorption spectrophotometer (AAS), and results are expressed in milligram/kilogram. The mean concentration of Ca (436 ± 1.0 mg/kg ) remained within the levels of sediment quality guidelines given by Washington State. The samples which were analyzed for magnesium metal concentrations were unusable due to a percent yield of over 100%. Continuous monitoring of calcium and magnesium content in the sediment are proposed to detect seasonal changes.