Her pioneering work in mass spectrometry could have a significant impact on the future of medical research.
Such techniques include fluorescence, paramagnetic resonance, microcalometry, circular dicroism, dual wavelength spectrophotometry, stop-flow spectrometry among others.
And when they used a different method, atomic absorption spectrometry, 25 were found to exceed EU limits.
The prize for mass spectrometry is shared by John Fenn and Koichi Tanaka.
ECONOMIST: This year, the Nobel authorities have shown a deft touch
The other method employed by the researchers is accelerator mass spectrometry (AMS).
Buchholz, a physicist and a nuclear engineer, is an expert at something called accelerator mass spectrometry, an extraordinarily precise method of determining the chemical composition of materials.
He said the next stage was to confirm its exact identity using mass spectrometry and nuclear magnetic resonance analyses to produce it chemically on a larger scale.
The most likely alternatives, butter and pig fat, were ruled out using a technique called isotope-ratio mass spectrometry, which measures the molecular weights of the chemicals in a sample.
Sequenom is developing a high-speed "bacterial fingerprinting" technique based on mass spectrometry that can be used to rapidly identify the DNA of subtly different strains of bacteria or viruses.
Mass spectrometry works by evaporating molecules, giving them an electric charge, and then applying an electric field to them and accelerating them through a vacuum chamber to a detector.
ECONOMIST: This year, the Nobel authorities have shown a deft touch
Dr Tongesayi told BBC News he was determined to reconcile his initial findings with the outcomes of subsequent analyses of his samples by other means, including the mass spectrometry method.
Using a technique called secondary ion mass spectrometry, the team determined that the mantle from which the meteorites derived contained between 70 and 300 parts per million (ppm) of water.
MSN: Scientists say parts of Mars interior are as wet as Earth's
The compounds in their breath were analysed using a technique called secondary electrospray ionisation mass spectrometry (SESI-MS), which is capable of detecting extremely small elements of the chemicals present in their breath.
Dr Tongesayi's findings also stand in stark contrast to prior published research on lead in rice, most of which have been established using a technique called mass spectrometry, which allows for more precision.
Using a combination of electrophoresis (which sorts proteins according to their size and electrical properties) and mass spectrometry (which sorts fragments of those proteins according to their weight), she was able to do just that.
ECONOMIST: Why some duck livers are delicious, and others nasty
The centre will integrate expertise in cell biology, mass spectrometry, proteomics, "big-data" analytics, drug discovery and computer science to exploit the potential of the human genome project for healthcare and the development of safer drugs.
BBC: Dundee University awarded ?700,000 for DNA data project
Using a combination of modern physics tools--including three-dimensional, high-resolution X-ray, radiocarbon dating with accelerator mass spectrometry, and infrared spectroscopy--the researchers analysed the tooth to determine the age and composition of a resinous filling detected inside.
应用推荐