Inductively coupled plasma spectrometer

Two methods were used to determine the purity of the final material. The ash content was obtained by calculation of a weight loss of 1 g size graphite sample, after its exposure to 900°C for 4 hours (Superior Graphite AIMS procedure FBQ0001). This test gives a good idea of the total amount of impurities. The nature of impurities and their specific concentrations as measured in ppm or ppb levels, was determined with an ICP inductively coupled plasma spectrometer (Model Jobin Yvon Ultima POXX/681,... 

Atomic absorption and inductively coupled plasma spectrometers are metal-selective spectrometers used for organic metal analysis. The connection of these spectroscopic instruments to a liquid chromatograph is relatively simple. Chromatograms of alkylmercury3 and aminoplatinum analytes4 are shown in Figures 2.8 and 2.9, respectively. 

M. F. Pimentel, B. De Narros Neto, M. C. Ugulino de Araujo and C. Pasquini, Simultaneous multielemental determination using a low-resolution inductively coupled plasma spectrometer/diode array detection system, Spectrochim. Acta, Part B, 52(14), 1997, 2151-2161. 

Metal content was determined by a LABTAM 8401 inductively coupled plasma spectrometer. X-ray powder diffraction was carried out on a Rigaku 2304 diffractometer with CuK radition(Ni filtered). IR and UV-vis spectra of the solid samples were recorded on a PE FTIR 1760 spectrometer and a PE Lambda Bio 40 instrument respectively. TG-DTA was performed on a CN8076E(Rigaku) thermal analysis instrument. 

Abbreviations. DSC, differential scanning calorimetry ICP, Inductively coupled plasma spectrometer AA, Atomic absorption. 

Fig. 4 Instrumental design of an inductively coupled plasma spectrometer utilizing either a monochromator (top) or polychromator (bottom) system of light dispersion. Photomultiplier tubes are denoted by PM.

Routh et al. applied simplex optimization to a flame spearoscopy experiment. Leary and co-workers used simplex optimization to improve the instrumental operating conditions for an inductively coupled plasma spectrometer. Harper and co-workers reported using a simplex search to locate an optimum ultrasonic extraction of trace elements from atmospheric particulates collected on glass-fiber high-volume sample filters. The method was quantitative for 13 elements, and was designated a U.S. Environmental Protection Agency reference method. 

The association of a spectrometer with the liquid chromatograph is usually for the purpose of structure elucidation of the eluted solute, a procedure that will be discussed in a later chapter. The association of tui atomic spectrometer with the liquid chromatograph, in contrast, is almost exclusively for the specific detection of the metalic and semi-metalic elements. The atomic spectrometer is a highly specific detector, and for element detection perhaps more so than the electrochemical detector. However, in general, a flame atomic absorption spectrometric (AAS) system is not as sensitive. If an atomic emission spectrometer or an atomic fluorescence spectrometer is employed then multi-element detection is possible. The inductively coupled plasma spectrometer can also, under some circumstances, provide multi-element detection but all three instruments are extremely expensive particularly in terms of an LC detector. It follows that most LC/AAS combinations employ a flame atomic absorption spectrometer or occasionally an atomic spectrometer fitted with a graphite furnace. Furthermore the spectrometer is usually set to monitor one element only, throughout the development of any given separation. 

Wendt R. H. and Fassel V. A. (1965) Induction coupled plasma spectromet-ric excitation source, Anal. Chem. 37 920-922. 

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