Toxic Substances Hydrology Program

Multimedia

One-stop collection of videos, photography, and audio. All items in this gallery are considered public domain unless otherwise noted.

Filter Total Items: 214
Digestive gland from a freshwater snail (Lymnaea stagnalis)
December 31, 2017

Digestive gland from a freshwater snail (Lymnaea stagnalis)

National Wildlife Health Center — Madison, Wisconsin. Digestive gland from a freshwater snail (Lymnaea stagnalis)

Scientist preparing samples in a laboratory for polymerase chain reaction analysis
December 31, 2017

Scientist preparing samples in a laboratory for PCR analysis

Scientist preparing samples in a laboratory for quantitative polymerase chain reaction (PCR) analysis

Samplers used for sampling hydrophilic organic chemicals from water
December 31, 2017

Samplers used for sampling hydrophilic organic chemicals from water

Passive Sampling Research—Columbia, Missouri. The polar organic chemical integrative sampler (POCIS - on the left) and semipermeable membrane devices (SPMDs - on the right) samplers are used for sampling hydrophilic organic chemicals from water. The SPMDs sampler can also be deployed for air sampling.

Pollen samples from various plants collected from hedgerows
December 31, 2017

Pollen samples from various plants collected from hedgerows

Organic Chemistry Research Laboratory -- Sacramento, California. Small sample bottles with pollen inside

United States occurrence of microcystins in lakes in the contiguous 48 U.S. states
December 31, 2017

Occurrence of microcystins in lakes in the contiguous US 48 states

United States occurrence of microcystins in lakes in the contiguous 48 U.S. states categorized by World Health Organization relative probable health risk. WHO low, moderate, and high refer to the relative human recreational health thresholds for microcystin exposure. Map not shown to scale. Modified from figure 2 from

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A saltwater tracer was injected into the shallow aquifer at a uranium-contaminated site in Colorado
December 31, 2017

A saltwater tracer was injected into the shallow aquifer

Hydrogeophysics Laboratory — Storrs, Connecticut. A saltwater tracer was injected into the shallow aquifer at a uranium-contaminated site in Colorado and monitored for 28 days using a combination of geophysical and well-sampling arrays; the sampling array is marked by the white standpipes adjacent to the central injection tank.

Cafo hogs
December 31, 2017

Cafo hogs

Cafo hogs taken by Kent Becker, unknown.

Aquariums where male fathead minnows were exposed to the effluent from a wastewater treatment plant
December 31, 2017

Aquariums where male fathead minnows were exposed to sewage effluent

Aquariums where male fathead minnows were exposed to the effluent from a wastewater treatment plant

Modified Wolf Creek Site Map
December 31, 2017

Wolf Creek site map modified from Figure 1

Wolf Creek site map modified from Figure 1 of 'Organic geochemistry and toxicology of a stream impacted by unconventional oil and gas wastewater disposal operations, Orem and Others, 2017'.  

Filtration system used for processing samples
November 30, 2017

Filtration system used for processing samples

Filtration system used for processing samples using a technique called polymerase chain reaction (PCR) or quantitative PCR (qPCR). 

Colonies of the Bacteria Bacillus Globigii on a Petri Dish
September 22, 2017

Colonies of the Bacteria Bacillus Globigii on a Petri Dish

Scientists optimized existing methods to collect and identify microorganisms including Bacillus anthracis, a pathogenic microorganism, in 4,800 soil samples across the United States, and developed a

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