English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The Donna Canal is a popular fishing spot for residents of Hidalgo County. The 11.3-kilometer-long irrigation canal and water-supply system is home to some of the best bass and catfish angling in the Rio Grande Valley of South Texas, and fish from the Donna Canal often end up on dinner tables. The fish, however, might be contaminated with PCBs, a group of toxic and carcinogenic (cancer-causing) compounds. PCBs are hydrophobic (meaning “water fearing”). These kinds of chemicals do not dissolve in water but instead adsorb to sediment and become incorporated into animal tissue. Small animals living in or around sediment contaminated with PCBs accumulate these toxic chemicals in their bodies. These creatures are eaten by other animals, which concentrate the PCBs in their tissue, and in this way, PCBs work their way up the food chain. Often the final consumers and concentrators of PCBs are humans. Water is pumped from the Rio Grande into the Donna Canal at an average rate of about 3.4 cubic meters per second. The Donna Canal carries the water north by simple gravity flow. The water from the canal is used for irrigation of nearby farmland. On its way north, the canal carries the water underneath a perennial stream, the Arroyo Colorado, by way of an underground siphon. The Donna Canal ultimately flows into Donna Reservoir, which supplies drinking water to the nearby municipalities of Donna and Alamo.

Occurrence of Polychlorinated Biphenyls (PCBs) on Suspended Sediment in the Donna Canal, Hidalgo County, Texas, 1999-2001