Intensified diode array detector for molecular fluorescence and chemiluminescence measurements

Design and evaluation of a dual multichannel detector spectrometer for simultaneous molecular absorption and luminescence measurements

“…The FL detection limit for QS obtained with a spectrograph and IDA detection is near to that obtained with a monochromator and PMT detector arid is more than an order of magnitude better than that reported previously (17) for a multichannel detector. This improvement is due in part to the lamp housing which provides higher excitation radiant power and to the different IDA with taller individual diodes (2,5 vs 0.45 mm).…”

Molecular fluorescence measurements with a charge-coupled device detector

“…INTRODUCTION There are several valuable analytical characteristics that make inductively coupled plasma atomic emission spectroscopy (ICP-AES) a widely utilized atomic emission technique for single and multielement major, minor, and trace analysis. These include low detection limits for a large number of elements, calibrations that are linear over a very wide range (generally 5 to 6 orders of magnitude), low matrix or chemical interference effects, fast operation, and multielement determination capability (1)(2)(3)(4)(5)(6)(7)(8). However, some hydride-forming elements such as arsenic, antimony, bismuth, selenium, tin, etc., are often present in real-world samples (e.g.…”

“…Multichannel array detectors are actively being investigated as a means of improving upon the sensitivity of the single-channel photomultiplier tube (PMT). One-and two-dimensional array detectors such as vidicons, photodiode arrays, and intensified photodiode arrays are being investigated for use in many areas of atomic and molecular spectroscopy (4)(5)(6)(7)(8). These detectors have a demonstrated multichannel advantage over PMT-based instrumentation resulting in improved signal-to-noise (S/N) ratios in situations requiring the measurement of a complete spectrum in a short period of time (9)(10)(11)(12).…”

Laser videofluorometer system for real-time characterization of high-performance liquid chromatographic eluate

“…Indeed, cooled LDA's equipped with high-gain intensifiers have been used as photon-counting spectrometers (15,16). They have also been used to monitor fluorescence (17) and ultraviolet resonance Raman of complex mixtures (18). An excellent example of the potential applicability of the intensified linear photodiode array (ILDA) to fluorescence detection of chromatographic effluents has been presented by Gluckman, Shelly, and Novotny (19).…”