Any material of plant or animal origin, including textiles, wood, bones and leather, can be dated by its content of carbon-14.Scientists remove a small sample from an object, treat the sample with a strong acid and a strong base, and finally burn it in a small glass chamber to produce carbon dioxide gas.
Chemical tests show that dye is yellow alizarin from madder root complexed with alum, a common mordant. Cotton, alizarin and gum are only found in the C14 sample area of the shroud.
The 1988 carbon 14 dating failure will not be ignored; for how does one ignore such a famous example.
So far Rowe and his colleagues used the technique to analyze the ages of about 20 different organic substances, including wood, charcoal, leather, rabbit hair, a bone with mummified flesh attached, and a 1,350-year-old Egyptian weaving.
The results match those of conventional carbon dating techniques, they say.
The Shroud of Turin, the controversial piece of linen that some believe to be the burial cloth of Jesus Christ, could finally be dated accurately.