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Chromatography

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Total cards: 10•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (10)

#1
Front (Question)

Theoretical plate

Back (Answer)

N number of Segments of the stationary phase where equilibrium is reached, more theoretical plates better separation

#2
Front (Question)

Height equivalent of a theoretical plate

Back (Answer)

HETP = L/N = A + B/v + C • v ABC = coefficients V = velocity of mobile phase Smaller the HETP, the better the separation

#3
Front (Question)

Detectors properties (GC)

Back (Answer)

• ) sensitivity • ) linearity • ) stability • ) universal or selective response

#4
Front (Question)

Linearity

Back (Answer)

Refer to the concentration range over which the signal is directly proportional to the concentration of the analyte and not distorted

#5
Front (Question)

Stability

Back (Answer)

The extent to which the signal output remains constant with time

#6
Front (Question)

Universal or selective response

Back (Answer)

To the components present in the mixture

#7
Front (Question)

Most common detectors

Back (Answer)

• ) thermal conductivity detector (TCD) 2. ) flame ionization detector (FID)

#8
Front (Question)

Thermal conductivity detector

Back (Answer)

Uses a metal filament to sense changes in the thermal conductivity of the carrier steam, universal detector

#9
Front (Question)

Flame ionization detector

Back (Answer)

The effluent front he column is mixed with hydrogen and burned in air to produce a flame that has enough energy to ionize solute molecules that have low ionization energy, detector = selective

#10
Front (Question)

Resolution (GC)

Back (Answer)

R = 2(tr2-tr1)/(wb1-wb2) 2 = substance 2, 1 = substance 1, w = bandwidth