Chemical analyzer according to the ionization technique by electronic spray without DESI

Researchers from Purdue University, Indiana, USA have succeeded in creating a chemical analyzer like the Tricoder used to analyze the chemical composition of strange planets in the Star movie. Trek.

The difference of this machine is that it can be used in many applications such as food inspection to detect dangerous bacteria like salmonella that have recently been detected in a bean brand. famous pho.

This machine promises to be applied in many fields from airport security to medical diagnostics.

The new machine is a super-fast chemical analysis tool that has many promising applications such as detecting liver cancer, luggage explosives and identifying 'biological signs' in urine. may notice some diseases.

This device is a small mass spectrometer combined with a technique called DESI (short for desorption English word electrospray ionization means ionized by impervious electronic spray) . This device and technique was developed by Purdue University team under the direction of the brilliant chemistry professor R. Graham Cooks of Purdue University's Department of Chemistry.

The sample product is called the Mini 10 mass spectrometer , the size of a shoe box and can be easily moved by one hand.This eyebrow has a length of 13.5 inches (equivalent to 34.29, width of 8.5 inches (21.59 cm) and height of 7.5 inches (19.05 cm). Its weight is 10 kilograms. lighter than regular machines of the same type 30 times) and can be run by battery.

Professor Cooks explains: 'Conventional mass spectrometers only analyze samples that have been specially prepared and placed in a vacuum chamber. In contrast, the DESI technique performs the ionization process outside the air or directly on the surface outside the vacuum chamber of the mass spectrometer. '

Unlike conventional mass spectrometers like the bulky experimental tool weighing more than 300 pounds (this equivalent of 136.07 kg), this new hand-held machine is only about 20 pounds in weight. equivalent to 9.07 kg) and it can be used in the field of research.

Professor Cooks said: 'We like to simulate it like a tricoder because it's really a handheld device that can provide accurate information about the chemical composition of test samples within a few minutes without damaging those patterns. '

Purdue researchers focus on finding compounds that have the appearance of some special substances like cocaine, explosives. If these indicators are detected, this device will conduct a specific analysis to determine the chemical structure of the compound .

The team used this machine to analyze fabric, food and pharmaceuticals and use it to detect cocaine in US $ 50 bills in just 1 second.

Two companies were established regarding DESI technology and portable universal block machines, Prosolia Inc. in the city of Indianapolis, technical commercialization DESI and Griffin Analytical Technologies LLC in West Lafayette City in Indiana specialize in trading ion mass spectrometers.

The Kiet