mass spectrometer造句

Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR-MS)

His main tool is a device called a secondary-ion mass spectrometer.

This pushes molecules off the sample surface as gaseous ions, which can be detected and identified by the mass spectrometer.

A quadrupole mass spectrometer is used to measure the changes in impurities before and after the discharge.

"mass spectroscopy A mass spectrometer uses electrical means to detect the sorted ions, while a mass spectrograph uses photographic or other nonelectrical means; either device is a mass spectroscope."

After each extraction, we purified the resulting gas and passed the xenon into hohenberg 's mass spectrometer, which indicated the number of atoms of each isotope present.

A quadrupole mass spectrometer used during launch vehicle testing and launching is given, and the trend of spacecraft leak monitoring technique and equipment is raised.

We study the dissociation channel and mechanism of anisole in the experiment using the time of flight mass spectrometer with the interaction of laser.

In order to gain the real leak rate under simulating operating conditions, using the pressurized leak detection method of helium mass spectrometer leak detector, the accurate data are obtained.

This paper introduces the improvement of mass spectrometer system and its controlling methods in incremental modification of EO/ EG units, and the design and application of rapid circuit part and flow circuit switching part in pretreatment.

They grow their bacteria on a stainless steel plate, and use a laser to vaporise their signalling molecules, feeding these into a mass spectrometer to catalogue the molecules present.

An obvious restraint in the use of isotope ratios results from the need to employ mass spectrometers.