| Absorbance
Applications: |
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Absorbance
Absorbance measurements are used for calculating concentrations
of carotenoids such as Fucoxanthin, a dominant pigment in
diatoms, or Peridinin, a diagnostic pigment of dinoflagellates.
Absorbances are also used for calculating concentrations
of fluorescing pigments such as chlorophyll a, b, or c.
Learn More>> |
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| Turbidity
Applications: |
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Turbidity
Turbidity is described as "an expression of the optical
property that causes light to be scattered and absorbed
rather than transmitted in straight lines through the sample"
(Standard Methods, 1995). As light passes through pure water,
it travels along a relatively undisturbed path. The light
passed through fluids, with suspended particles present,
is greatly distorted by absorption or scattering, caused
by these particles. Learn
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| Fluorometer
Applications: |
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Algal
Pigments
The measurement and distribution of living, microscopic
plant matter, commonly referred to as phytoplankton or algae,
has been of interest to scientists, researchers, and aquatic
resource managers for decades. An understanding of phytoplankton
populations and their distribution enables researchers to
draw conclusions about an aquatic systems health, composition,
and ecological status. Learn
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Active
Fluorescence
Active fluorescence methods were developed over 30 years
ago to monitor and assess mechanisms of photosynthesis in
phytoplankton and higher plants. Active fluorescence methods
utilize the relationship between chlorophyll fluorescence
and photosynthesis to characterize phytoplankton ‘health’.
Phytoplankton photosynthetic efficiency is one of the biological
signals that rapidly reacts to changes in nutrient availability
as well as naturally occurring or anthropogenically introduced
contaminants. The results can be used as an indicator of
system wide change or phytoplankton health. Learn
More>> |
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Ammonium
Accurate determination of ammonium in aquatic environments
is a critical measurement when investigating Nitrogen cycling
and nutrient dynamics. Historically, methods for ammonium
determination have been a source of frustration within the
scientific community due to the lack of a simple, accurate
and affordable method, particularly in the submicromolar
range. Learn More>> |
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Alkaline
Phosphatase
Detection of alkaline phosphatase (AP) using MUP as a substrate
and a Turner Designs Fluorometer to measure the highly-fluorescent
enzymatic product, 4MU, enables researchers to quantitate
as little as 1 x10-7 mg/ml (200 pg) 4MU and has a linear
range of over 5 orders of magnitude. Learn
More>> |
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CDOM
Monitoring the chromophoric or colored fraction of dissolved
organic matter (CDOM) in natural waters can be an extremely
useful tool in a variety of marine and freshwater applications.
Learn More>> |
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Coliform
The Colifast Handheld Microdetector provides a rapid field
test of bacterial contamination in recreational surface
water and waste water. The Colifast method is based on an
enzymatic reaction.
Read More>> |
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Cyanobacteria
(Phycoerythrin and Phycocyanin)
Cyanobacteria has been found to be a numerically abundant
faction of the phytoplankton community. Their roles in primary
production, community structure, and spatial and temporal
distribution are of interest for numerous scientific studies
as well as natural water monitoring. Learn
More>> |
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Fluorescent
Dye Tracing
Tracers are compounds, usually dyes or salts, used for measuring,
mapping, and monitoring water systems. Tracers are used
for measuring water flows, studying and modeling surface
and ground water systems, tracing contaminants in emergency
response situations, detecting leaks, and measuring tank
retention times. Learn
More>> |
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Oil
in Water
Crude oil, which is also called Petroleum, is found beneath
the earth's surface where it was formed millions of years
ago by natural processes. Crude oil is present in the environment
as either oil in water (emulsions) or dissolved oil in water
(molecular). Learn More>> |
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Optical
Brighteners
Optical Brighteners (OBAs) are primarily added to laundry
soaps, detergents, and cleaning agents for the purpose of
brightening fabrics and/or surfaces. Laundry wastewater
is the largest contributor of OBAs to wastewater systems
because it retains a large portion of dissolved OBAs. Learn
More>> |
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| Related
Information: |
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Useful
Links for Environmental Applications
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Chlorophyll
Reference Papers |
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SCUFA®
Performance Testing |
