Photodiode Array Studies of near Infrared and Red Atomic Emissions of C, H, N, and O in the Argon Inductively Coupled Plasma

Abstract

Preliminary qualitative multielemental inductively coupled plasma atomic spectra of C, H, N, and O are presented using a low dispersion, near infrared and red photodiode array spectrometer. Simple spectra of reasonable intensity are obtained with short (4 ms) integration times. Sensitivity and dispersion considerations are sharply contrasted with those conventionally associated with ultraviolet photodiode array spectra of metals in the inductively coupled plasma.

Detection of negative ions by inductively coupled plasma mass spectrometry

“…Previous attempts in ICP optical emission spectroscopy (OES) to determine nonmetals have yielded only limited practical utility (2)(3)(4)(5)(6)(7)(8)(9)(10)(11). Although emission from many of these elements can be observed, it is typically detected only when relatively high concentrations of the analyte are present in the sample.…”

Determination of molecular nitrogen with a photometric detector

“…On the other hand, molecular nitrogen is easily excited in argon discharges and flowing afterglows (9). In fact, the detection of nitrogen-elemental or in the form of its compounds-has been extensively investigated in the argon inductively coupled plasma (10,11), the argon microwaveinduced plasma (12)(13)(14), and other argon discharges (6,15,16). Limits of detection with photoelectric devices are generally in the parts-per-million range (10,(14)(15)(16), while a photographic method reaches below 0.1 ppm (6).…”

Moving wheel liquid chromatography-helium microwave-induced plasma interface

“…This technology has opened new doors in the field of atomic emission spectroscopy. One of the greatest advantages of He-MIP is the ability to detect the nonmetal elements (6)(7)(8)(9), which are difficult to determine in trace amounts by conventional atomic spectrometric methods.…”