Lauren Zandstra, Amanda Gernentz and Alexa Bakker

rapidcrimsonMechanics

Feb 22, 2014 (3 years and 5 months ago)

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Using SEM and Color Analysis in Sediment Fingerprinting

Lauren Zandstra, Amanda Gernentz and Alexa Bakker

Mentor: Dr. Graham Peaslee

Department of Geological and Environmental Sciences



Lake Macatawa is a hypereutropic lake because of the excess

sedimentation and
attached phosphorus. To help battle the high

phosphorous content in the lake, a variety
of analytical methods

are being employed through the Macatawa Watershed Project.

The goal of this project is to use a Scanning Electron Microscope

(SE
M) and color
analysis to study the size and shape of the

sediment, biologicals such as pollen within
the sediment and

even reflected light color of the sediment to determine subtle

differences that will allow a fingerprinting of sediment within the

watersh
ed. Images for
analysis of size/shape and biologicals

are collected using a SEM and analyzed using
commercial

software. Due to the variation in pH, vegetation, and soil type

each part of
the watershed has distinctive characteristics. Data

collected from th
e SEM will be
combined with RGB color analysis

of the sediments as well. This fingerprinting of the
sediment will

allow for preliminary attribution of the nonpoint source pollution

to
individual sub
-
watersheds and allow for the prioritization of

remediatio
n methods to
improve the overall water quality of Lake

Macatawa.