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Wearable device measures cortisol in sweat

The hormone cortisol rises and falls naturally throughout the day and can spike in response to stress, but current methods for measuring cortisol levels require waiting several days for results from a lab. By the time a person ...

date2 hours ago in Analytical Chemistry
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Detecting metabolites at close range

A novel concept for a biosensor of the metabolite lactate combines an electron transporting polymer with lactate oxidase, which is the enzyme that specifically catalyzes the oxidation of lactate. Lactate is associated with ...

dateJun 22, 2018 in Analytical Chemistry
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Sensor detects whiff of bad breath

Ever wish you could do a quick "breath check" before an important meeting or a big date? Now researchers, reporting in ACS' journal Analytical Chemistry, have developed a sensor that detects tiny amounts of hydrogen sulfide ...

dateJun 06, 2018 in Analytical Chemistry
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Sniffing out real truffles

At a cost of thousands of dollars per pound, truffles are an expensive food. The fungi are prized for their distinctive aroma, and many foods claim truffles or their aromas as ingredients. But some of these foods may actually ...

dateMay 30, 2018 in Analytical Chemistry
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New portable malaria screening instrument developed

According to the World Health Organization, over 216 million people were infected with malaria in 2016, and 445,000 individuals died from the disease. The key to solving this health crisis is early-stage diagnosis when malaria ...

Precise analysis of the particulate composition of smog

Researchers from several leading Warsaw scientific institutions have collaborated to develop a new, extremely precise method for the chemical analysis of suspended particulate matter comprising smog. The method, easily adaptable ...

New device for quick and accurate detection of lead

A research team from the Department of Chemistry of Hong Kong Baptist University (HKBU) has invented a portable device for one-stop detection of lead concentration in drinking water. The DNA-based device, which works together ...

Real-time coverage of inside of the brain made possible

Real-time monitoring of the dynamics of endogenous molecules in organisms is an important aspect in the study of diseases. However, this process is difficult because of issues such as sensitivity, resolution, and invasiveness. ...

Weighing single molecules with light

Scientists at Oxford University have developed a light-based measuring technique that could transform our ability to characterise biomolecules.

Why we need erasable MRI scans

Magnetic resonance imaging, or MRI, is a widely used medical tool for taking pictures of the insides of our body. One way to make MRI scans easier to read is through the use of contrast agents—magnetic dyes injected into ...

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