The discovery exploits a new hair analysis method that could help, in addition to
police, even doctors, archaeologists and anthropologists in their research. In fact, one was created
sort of "water mapping" that allows you to combine geographical areas with isotope values
detected in the hair.
Police forces are using this method to obtain the origin of
some unidentified murder victims. Isotopes are forms of the same chemical element
with different atomic weights, because they present a different number of neutrons in the nucleus (the
stable isotopes are those that do not have radioactive decay). Three years ago two expected
they founded IsoForensics, a company that uses stable isotope analysis to detect them
Small variations of a chemical element. The team managed to map the concentrations of the
stable isotopes of hydrogen and oxygen in the hair, discovering that they are a trace of those
present in food and drinking water, but also in breathed air. If however the isotopes present
of Americans follow a fairly similar diet, the key is found right in the water
in the air they are the same everywhere in the United States, like those of food, since most
in hair and drinking water. Just one hair is enough to understand where a person has lived
drinking. The researchers found a link between the values of hydrogen and oxygen isotopes
in recent years or weeks, a second of the length of the hair itself. There
water samples taken from hundreds of barbershops and taps in 65 cities in 18 states
map cannot pinpoint the exact location where someone has previously been but identified
the geographical area in which it is lived. The map was drawn thanks to the analysis of hair and
Dell'Unione. The method can be used not only to track the movements of criminals and
ancients. And there is no lack of possible medical uses.
crime victims. Anthropologists and archaeologists can use this method to analyze
ancient hair samples and learn about the movements of Native Americans, or more peoples
police, even doctors, archaeologists and anthropologists in their research. In fact, one was created
sort of "water mapping" that allows you to combine geographical areas with isotope values
detected in the hair.
Police forces are using this method to obtain the origin ofsome unidentified murder victims. Isotopes are forms of the same chemical element
with different atomic weights, because they present a different number of neutrons in the nucleus (the
stable isotopes are those that do not have radioactive decay). Three years ago two expected
they founded IsoForensics, a company that uses stable isotope analysis to detect them
Small variations of a chemical element. The team managed to map the concentrations of the
stable isotopes of hydrogen and oxygen in the hair, discovering that they are a trace of those
present in food and drinking water, but also in breathed air. If however the isotopes present
of Americans follow a fairly similar diet, the key is found right in the water
in the air they are the same everywhere in the United States, like those of food, since most
in hair and drinking water. Just one hair is enough to understand where a person has lived
drinking. The researchers found a link between the values of hydrogen and oxygen isotopes
in recent years or weeks, a second of the length of the hair itself. There
water samples taken from hundreds of barbershops and taps in 65 cities in 18 states
map cannot pinpoint the exact location where someone has previously been but identified
the geographical area in which it is lived. The map was drawn thanks to the analysis of hair and
Dell'Unione. The method can be used not only to track the movements of criminals and
ancients. And there is no lack of possible medical uses.
crime victims. Anthropologists and archaeologists can use this method to analyze
ancient hair samples and learn about the movements of Native Americans, or more peoples
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