Molecular emission cavity

Vol. 129. Flame Chemiluminescence Analysis by Molecular Emission Cavity Detection. Edited by David Stiles, Anthony Calokerinos, and Alan Townshend... 

Electroanalytlcal Stripping Methods. By Khjena Z. Brainina and E. Neyman Air Monitoring by Spectroscopic Techniques. Edited by Markus W. Sigrist Information Theory in Analytical Chemistry. By Karel Eckschlager and Klaus Danzer Flame Chemiluminescence Analysis by Molecular Emission Cavity Detection. Edited by... 

Amino acids can be determined in a two-step process (reaction 26). The SO2 produced can be determined by measuring the S2 emission of an N2-H2 flame in a molecular emission cavity. Carbon was found to be better than iron for building the cavity376. 

ECO = electron capture detector ED = electrochemical detector FID st flame ionization detector GC = gas chromatography HECD = Hall s electrolytic conductivity detector HPLC = high performance liquid chromatography MEC = molecular emission cavity analysis MS - mass spectrometry HD = photo-ionization detector... 

Abdel-Kader MHK, Peach ME, Stiles DA. 1979. Determination of ethylene dibromide in fortified soils by molecular emission cavity analysis using a modified extraction process. J Assoc Off Anal Chem 62 114-118. 

With a molecular emission cavity flame detector, relying on measurement of the 526 nm emission of HPO (see Section II.C.l and III.B.3.b), nanogram amounts of phosphates or organophosphorus compounds can be assessed in automated systems160,348. Determination of m, the time elapsed between sample ignition and maximum emission, allows the resolution of ternary or more complex mixtures of insecticides. Dicrotophos, dimethoate, malathion and parathion mixed in aqueous solution were separated and identified in nanograms per millilitre concentrations348. 

Molecular emission cavity analysis has been used to determine soluble sulfate in soil [69]. 

Organophosphorus type, triethy lpho sphate, trimethylphosphate, dimethyl phosphonothioate Molecular emission cavity detection [128]... 

Selenium cannot be usefully determined by flame AES techniques, because of the high excitation energy associated with its low-wavelength resonance lines. However, it has been shown that it can be determined by a cool flame, molecular emission cavity analysis technique, as discussed briefly in Chapter 2, section 13. 

Use of Molecular Emission from Cool Flames Molecular Emission Cavity Analysis Instrumental Requirements in AFS... 

Vol. 129. Flame Chemiluminescence Analysis by Molecular Emission Cavity Detection. 

Emission spectrometry using chemical flames (flame atomic emission spectrometry, FAES) as excitation sources is the earlier counterpart to flame atomic absorption spectrometry. In this context emission techniques involving arc/spark and direct or inductively coupled plasma for excitation are omitted and treated separately. Other terms used for this technique include optical emission, flame emission, flame photometry, atomic emission, and this technique could encompass molecular emission, graphite furnace atomic emission and molecular emission cavity analysis (MEGA). 

MCN microconcentric nebulizer MEGA molecular emission cavity analysis MEKC micelle electrokinetic chromatography... 

J. L. Burguera and M. Burguera, Determination of Sulphur Anions by Flow Injection with a Molecular Emission Cavity Detector. Anal. Chim. Acta, 157 (1984) 177. 

M. Burguera and J. L. Burguera, Flow Injection—Hydride Generation System for the Determination of Arsenic by Molecular Emission Cavity Analysis. Analyst, 111 (1986) 171. 

Belcher R, Bogdanski SL, and Townshend A (1973) Molecular emission cavity analysis. A new flame analytical technique. Analytica Chimica Acta 67 1-16. 

Molecular emission cavity analysis (MECA) is a flame chemiluminescence technique based on the generation of excited molecules, radicals, or atoms within a hydrogen diffusion flame. The excited species are formed by direct or indirect chemiluminescence mechanisms and are confined within the inner space of a small cavity, which is positioned at a preselected point of the flame environment. The emission is monitored at the characteristic wavelength of... 

Figure 3 Sa emission spectrum from carbon disulfide vapors introduced into a water-cooled cavity into which cooling water is supplied at (A) low and (B) high flow rate, showing the effect of the Salet phenomenon on the emission (C flame background emission). (Reproduced from Stiles DA, Calokerinos AC, and Townshend A (1994) Flame Chemiluminescence Analysis by Molecular Emission Cavity Detection. New York Wiley.)...

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