Engineers at the University of California San Diego have developed an ultra-sensitive sensor made with graphene that can detect extraordinarily low concentrations of lead ions in water. The device achieves a record limit of detection of lead down to the femtomolar range, which is one million times more sensitive than previous sensing technologies.
Another powerful storm arrived in Southern California with at least three straight days of rain in the forecast for San Diego County, and authorities warning of potentially dangerous flooding Monday.
Additional swift-water rescue teams and assistance from the U.S. National Guard will be on tap when the next big storm arrives Thursday, officials said Tuesday, even as many worked to recover from the flash flood that upended so many lives just eight days ago.
Ahead of another severe storm warning, Mayor Todd Gloria issued an evacuation warning Wednesday to low-lying areas of the city, devastated by flooding last week. The evacuation is currently voluntary, said the mayor, and designed to keep the public ready should an evacuation become mandatory.
Ultra-Sensitive Lead Detector Could Significantly Improve Water Quality Monitoring
/in Home Headline, Media Coverage, San Diego County /by Maddie Simmons /Phys.orgEngineers at the University of California San Diego have developed an ultra-sensitive sensor made with graphene that can detect extraordinarily low concentrations of lead ions in water. The device achieves a record limit of detection of lead down to the femtomolar range, which is one million times more sensitive than previous sensing technologies.
Storm Arrives in San Diego Potentially Bringing Heavy Rain, Flooding, Gusty Winds and Snow
/in Home Headline, Media Coverage, San Diego County /by Maddie Simmons /NBC (San Diego)Another powerful storm arrived in Southern California with at least three straight days of rain in the forecast for San Diego County, and authorities warning of potentially dangerous flooding Monday.
Region Braces For Second Storm as County Approves Targeted 60-day Eviction Ban
/in Home Headline, Media Coverage, San Diego County /by Maddie Simmons /The San Diego Union-Tribuneby Paul SissonAdditional swift-water rescue teams and assistance from the U.S. National Guard will be on tap when the next big storm arrives Thursday, officials said Tuesday, even as many worked to recover from the flash flood that upended so many lives just eight days ago.
Morning Report: Mayor Gloria Warns Residents to Be Ready for Evacuation
/in Home Headline, Media Coverage, San Diego County /by Maddie Simmons /Voice of San DiegoAhead of another severe storm warning, Mayor Todd Gloria issued an evacuation warning Wednesday to low-lying areas of the city, devastated by flooding last week. The evacuation is currently voluntary, said the mayor, and designed to keep the public ready should an evacuation become mandatory.