Analytical Chemistry 2 Instrumental Analysis Jobs in Analytical

Analytical Chemistry 2 Instrumental Analysis Jobs in Analytical Chemistry Nanotechnology

Essential Components of an Instrument 1. Signal generator 2. Detector (input transducer): Signal which reflects the presence and Converts one kind of amount of analyte signal to another. present. This may be Most detectors an ion of the analyte convert analytical itself or some signals to current or attenuation of the voltage signal due to the anayte being present

Essential Components of an Instrument 3. Signal Processor: 4. Readout device: Signal is modified to Transducer which make it more converts processed convenient to be read signal into a signal by readout device. which is Signal may be understandable to filtered, amplified, humans converting from analog to digital, etc.

Identify: The signal generator in a thermometer The readout on a thermometer Which part of an instrument is a speedometer? The signal generator in a UV spectrometer The input transducer in a UV spectrometer What is the transduced signal in a UV spec? What is the signal processor in a UV spec? What is the readout in a UV spec?

§ Current world problems need Analytical Chemistry to solve

Airline Security § Design an instrument that can tell if there is anything “dangerous” in a suitcase. You know, of course, that not every metal object is dangerous, nor is every dangerous object metal. Pay special attention to the signal generating part of the instrument.

Methods of Detecting Analytes 1. Physical means Mass color refractive index thermal conductivity 2. With electromagnetic radiation (spectroscopy) absorption emission scattering 3. By an electrical charge electrochemistry mass spectrometry