X

Quad ru pole

Fig. 1.17 The quadrupole mass analyzer is formed by four circular or hyperbolic rods placed in parallel. F Quadrupolar potential.

Quad ru pole

Fig. 1.17 The quadrupole mass analyzer is formed by four circular or hyperbolic rods placed in parallel. F Quadrupolar potential.

the RF voltage is maintained, the ions remain focused with no mass selectivity. Therefore, RF quadrupoles are ideal as ion guides or as a collision cell. Typically, quadrupole mass analyzers operate at unit mass resolution (FWHM 0.6-0.7 m/z units). There is a strong relation between resolution and transmission. In general higher mass resolution results in a decrease of transmission, but mass resolution corresponding to peak width of 0.1 m/z units without significant loss in sensitivity have also been reported. The mass range of quadrupoles is typically between m/z 5 and m/z 4000. Most common ionization sources are available on quadrupole instruments, including EI, ESI, APCI, APPI and MALDI.

Healthy Chemistry For Optimal Health

Healthy Chemistry For Optimal Health

Thousands Have Used Chemicals To Improve Their Medical Condition. This Book Is one Of The Most Valuable Resources In The World When It Comes To Chemicals. Not All Chemicals Are Harmful For Your Body – Find Out Those That Helps To Maintain Your Health.

Get My Free Ebook


Post a comment