A new low-cost technique that quickly and accurately detects cryptosporidium contamination in water samples has been developed by researchers in the School of Engineering.
A handheld 'tricorder' that can test for biological contamination in real-time has been the dream of science fiction fans for decades. And UBC Okanagan engineers say the technology is closer to science fact than ever before.
Researchers Identify Treatment Targets For Cryptosporidium Parvum
Cryptosporidium parvum has long been the scourge of freshwater in the developing world.
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‘Cryptosporidium is an intestinal pathogen and one of the leading causes of respiratory and gastrointestinal illness in the world. ’
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Drinking water contaminated with the parasite can result in diarrhea and, in extreme cases, can even lead to death.
"Current methods for detecting cryptosporidium require filtering large volumes of water, separating out the organisms, staining them with a fluorescence label and trying to identify the pathogen using a microscope," says George Luka, a doctoral student at UBC Okanagan's School of Engineering and study lead author. "The process is extremely slow, expensive and doesn't yield reliable results."
![Drinking Water Contamination: More Than 5.6 Million Americans Are Exposed To Nitrate]( "Drinking Water Contamination: More Than 5.6 Million Americans Are Exposed To Nitrate")
More than 5.6 million Americans are exposed to increased nitrate levels as a result of drinking water contamination.
Luka says there is an urgent need to develop a fast, flexible, accurate and real-time detection tool to meet the challenge of protecting water consumers from this common and potentially dangerous contaminent.
To solve this problem, Luka and his colleagues tested a specially designed and calibrated biosensor. Using varying concentrations of pathogen in water samples, they were able establish its ability to detect cryptosporidium contamination.
"The biosensor performed exactly as we were hoping and was able to measure cryptosporidium contamination rapidly and without the need for complex preparations and highly-trained technicians," says Luka. "This is an impressive solution that can easily be integrated into inexpensive and portable devices to test drinking water in real-time anywhere in the world." Luka also says the biosensor can be expanded to measure other biomarkers and hazards.
"The technology has real potential to be used to test all kinds of biological contamination, both in medical and environmental applications. A handheld sensor that tests the safety of our water and our environment could soon become a reality."
Source: Eurekalert
Drinking Water Contamination: More Than 5.6 Million Americans Are Exposed To Nitrate
More than 5.6 million Americans are exposed to increased nitrate levels as a result of drinking water contamination.
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Luka says there is an urgent need to develop a fast, flexible, accurate and real-time detection tool to meet the challenge of protecting water consumers from this common and potentially dangerous contaminent.
To solve this problem, Luka and his colleagues tested a specially designed and calibrated biosensor. Using varying concentrations of pathogen in water samples, they were able establish its ability to detect cryptosporidium contamination.
"The biosensor performed exactly as we were hoping and was able to measure cryptosporidium contamination rapidly and without the need for complex preparations and highly-trained technicians," says Luka. "This is an impressive solution that can easily be integrated into inexpensive and portable devices to test drinking water in real-time anywhere in the world." Luka also says the biosensor can be expanded to measure other biomarkers and hazards.
"The technology has real potential to be used to test all kinds of biological contamination, both in medical and environmental applications. A handheld sensor that tests the safety of our water and our environment could soon become a reality."
Source: Eurekalert
State Guidelines For Toxic Water Contamination May Not Be Looking After Your Health
Some states in the US, have been found to diverge dramatically from the federal drinking water guidelines, which state the safest levels of certain toxic chemicals such as per- and poly-fluoroalkyl substances (PFAS) in drinking water.
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 Water Contamination - How To Prevent?Drinking water supplies located near hydraulic fracturing sites and oil , gas wells are more likely to be contaminated. | Advertisement
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