Inductively coupled argon plasma emission spectrometer

Francesconi, K.A., P. Micks, R.A. Stockton, and K.J. Irgolic. 1985. Quantitative determination of arsenobe-taine, the major water-soluble arsenical in three species of crab, using high pressure liquid chromatography and an inductively coupled argon plasma emission spectrometer as the arsenic-specific detector. Chemosphere 14 1443-1453. 

The inductively coupled argon plasma emission spectrometer used for quantitative analysis of trace elements. 

In the inductively coupled argon plasma emission spectrometer method, nickel, iron, and vanadium content of gas oil samples in the range from 0.1 to 100 mg/kg. Thus a 10-g sample of gas oil is charred with sulfuric acid and subsequently combusted to leave the ash residue. The resulting sulfates are then converted to their corresponding chloride salts to ensure complete solubility. A barium internal standard is added to the sample before analysis. In addition, the use of the ICAP method for the analysis of nickel, vanadium, and iron present counteracts the two basic issues arising from metals analysis. The most serious issue is the fact that these metals are partly or totally in the form of volatile, chemically stable porphyrin complexes and extreme conditions are needed to destroy the complexes without losing the metal through volatilization of the complex. The... 

Fig. 2.4. Chromatogram of a solution containing arsenite, arsenate, methylarsonic acid, dimethylarsinic acid, phenylarsonic acid, selenite, and phosphate recorded with an ARL 34000 simultaneous inductively coupled argon plasma emission spectrometer as the multi-element-specific detector [Hamilton PRP-1 resin-based reverse-phase column, Waters Associates Inc. Model 6000A high pressure liquid chromatograph, 0.1 ml injected flow rate 1.5 ml min", mobile phases 0.002 M aqueous HTAB at pH 9.6 to 250 sec, 99/1 (v/v) H2O/CH3COOH 250-1100 sec, 90/10 (v/v) H20/dimethylformamide 1100-1700 sec. ICP As 189.0 nm, P 241.9 nm, Se 203.9 nm, integration time 5 sec]. Redrawn from Spectrochimica Acta [11] by permission of Pergamon Press and the authors.

Inductively coupled argon plasma emission spectrometers of the sequential or simultaneous type were used very little as detectors for gas chromatographs [28]. The detection limits for metals in these systems approached the low nanogram levels. However, the detection limits for... 

Comparison of graphite furnace atomic absorption and inductively coupled argon plasma emission spectrometers as element-specific detectors for liquid chromatography... 

Fig. 2.7. Chromatograms of purified and impure methanolic extracts from crab meat and of a distilled water solution of S3mthetic arsenobetaline with an ARL 34000 simultaneous inductively coupled argon plasma emission spectrometer as the arenic-specific detector. [Hamilton PRP-1 column, Waters Associates high pressure liquid chromatograph, conditions as in ref [11], Redrawn from Chemoaphere [68] by permission of Pergamon Press and the authors.

The AED employs a microwave-induced He plasma to dissociate eluted analyte molecules to their component atoms and excite them to emit at characteristic wavelengths. This is very similar to the mechanism in the argon plasma inductively coupled plasma source (cf. Section 7.3.1). A spectrometer with a diode array detector (Figure 7.26b and c) isolates and measures the intensity of sensitive emission lines unique to each element. Depending on the relative sensitivity and proportion of atoms in the molecules, separate element response channels may display peaks in several element-selective chromatograms. These data may be combined with retention... 

ICPMS Liquid-dissolved sample Ions produced in Induct. Coupled Plasma Mass carried by gas stream into argon plasma Spectroscopy R.F. induction coil Photons — Absorption, Reflection and Electron Emission Ions-analyzed in quadrupolemass spectrometer High sensitivity analysis of trace elements 11... 

All chemicals were reagent grade and were used without further purification. Infrared spectra were recorded on a JASCO FT/IR-350 spectrometer. Mass spectra were measured using a JEOL JMS-TIOOLP. Elemental analyses were performed on a Yanaco CHN corder MT-6. Inductively coupled plasma (ICP) emission spectroscopy was performed on a Shimadzu lCPE-9000. Thermogravimetric analyses were performed on a MAC TG-DTA 2000 in an argon atmosphere at a heating rate of 1 °C min . ... 

In inductively coupled plasma mass spectrometry analysis, the sample is heated in an argon-plasma activated by a high-voltage field. Thereby, atoms are ionized. Using an electric field, the generated ions are accelerated to the analyser of the mass spectrometer, where they are separated according to the mass of the specific isotopes. In inductively coupled plasma optical emission spectroscopy (ICP-OES), also referred to as inductively coupled plasma atomic emission spectroscopy (ICP-AES), the sample is atomized in argon plasma and the excitation of an optical emission of cadmium is measured. 

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