Which of the following detectors is widely used to detect environmental samples like chlorinated pesticides and polychlorinated biphenyls?(a) Flame ionization detector(b) Thermal conductivity detector(c) Argon ionisation detector(d) Electron capture detectorThis question was addressed to me in class test.Enquiry is from Detection System of Gas Chromatography topic in portion Chromatography of Analytical Instrumentation

Which of the following detectors is widely used to detect environmenta

1.	Which of the following detectors is widely used to detect environmental samples like chlorinated pesticides and polychlorinated biphenyls?(a) Flame ionization detector(b) Thermal conductivity detector(c) Argon ionisation detector(d) Electron capture detectorThis question was addressed to me in class test.Enquiry is from Detection System of Gas Chromatography topic in portion Chromatography of Analytical Instrumentation
Answer» Right answer is (d) Electron capture detector The best I can explain: Electron capture detector is used to detect environmental SAMPLES like polychlorinated biphenyls and chlorinated pesticides. It is highly sensitive to molecules CONTAINING FUNCTIONAL groups such as HALOGEN and phosphorous.

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