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In flame ionization detector, the ions collected on the negatively charged grid are amplified at the high impedance amplifier.

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In flame ionization detector, the ions collected on the negatively charged grid are amplified at the high impedance amplifier.

(a) True

(b) False

This question was posed to me in an online quiz.

This key question is from Estimation of Hydrocarbons topic in portion Pollution Monitoring Instruments of Analytical Instrumentation

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Correct choice is (b) False

The best I can explain: In flame ionization detector, the ions collected on the positively charged grid are amplified at the high impedance amplifier. Its output is given to the chart recorder.

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