Determination of boron in plants by emission spectroscopy with the nitrous oxide-hydrogen flame

The Analyst ◽  
1972 ◽  
Vol 97 (1160) ◽  
pp. 860 ◽  
Author(s):  
J. C.-M. Pau ◽  
E. E. Pickett ◽  
S. R. Koirtyohann
Keyword(s):  
Nitrous Oxide ◽  
Emission Spectroscopy ◽  
Hydrogen Flame

Emission Photometric Determination of Boron in Unboronated Fertilizers, Using the Nitrous Oxide-Hydrogen Flame

1973 ◽  
Vol 56 (1) ◽  
pp. 151-153
Author(s):  
Edward E Pickett ◽  
Jimmy C-M Pau
Keyword(s):  
Nitrous Oxide ◽  
Detection Limit ◽  
Boron Content ◽  
Photometric Determination ◽  
Flame Photometry ◽  
Hydrogen Flame ◽  
Emission Flame

Abstract The analysis of boronated fertilizers by extraction of acid-soluble boron with 2-ethyl-l,3-hexanediol in chloroform, with determination of boron by emission flame photometry, has been modified so that it may be applied to unboronated fertilizers. The very hot but non-reducing nitrous oxide-hydrogen flame provides a detection limit of 0.05 ppm in the extract or 0.5 ppm in the sample. Fluoride is the only major interference and this is eliminated by addition of zirconium ions. The range of boron content found in 8 samples of mixed fertilizers was 28.8 to 202 ppm.

Direct Determination of Manganese in Gasoline by Atomic Absorption Spectrometry in the Nitrous Oxide-Hydrogen Flame

1977 ◽  
Vol 31 (6) ◽  
pp. 541-547 ◽  
Author(s):  
R. J. Lukasiewicz ◽  
B. E. Buell
Keyword(s):  
Nitrous Oxide ◽  
Liquid Phase ◽  
Atomic Absorption ◽  
Direct Determination ◽  
Absorption Spectrometry ◽  
Phase Volume ◽  
Uptake Rates ◽  
Hydrogen Flame ◽  
Very High

The nitrous oxide-hydrogen flame provides efficient combustion of aspirated gasoline without the formation of luminescent unburned carbon particles. Direct aspiration of gasoline into this flame is practical even at very high nebulizer uptake rates and is thus the basis for rapid direct determination of manganese by atomic absorption spectrometry. The atomic absorption spectrophotometer, however, must be calibrated by using standards prepared from the same organometallic manganese compound present in the samples. Atomic absorption response for manganese naphthenate, manganese octoate, and methylcyclopentadienylmanganese tricarbonyl (MMT) can differ by as much as 45% relative depending on the nebulizer uptake rate. At the optimum nebulizer uptake rate used, 6 ml/min, the difference between absorption response of the most sensitive compound, manganese naphthenate, and the least sensitive, MMT, is 15%. Very high nebulizer efficiencies and relatively high uptake rates result in high sample transport to the flame. Absorption at a given concentration for all compounds increases in a linear fashion with the amount of sample transported to the flame up to about 3.0 ml/min. At 4.0 ml/min equivalent liquid phase volume delivered to the flame maximum absorbance occurs; absorbance diminishes rapidly thereafter. Plots of absorption vs equivalent liquid phase volume delivered to the flame passed through the origin for manganese naphthenate and manganese octoate. The same plot for MMT shows a positive intercept on the volume delivered axis, which indicates a consistent loss of absorption for MMT relative to the naphthenate and the octoate for all rates of sample delivery to the flame.

Simultaneous Sorption of Chelates of Elements with Organic Reagents on Amberlite XAD-2 as a Preconcentration Step for the Emission Spectrometric Determination of the Elements

1993 ◽  
Vol 58 (8) ◽  
pp. 1821-1831 ◽  
Author(s):  
Jaroslav Jambor ◽  
Tomáš Javorek
Keyword(s):  
Nitrous Oxide ◽  
Argon Plasma ◽  
Electric Arc ◽  
Emission Spectrometry ◽  
Organic Reagents ◽  
Inductively Coupled ◽  
Simultaneous Sorption

The macrophorous hydrophobic sorbent Amberlite XAD-2 proved to be well suited to the preconcentration of minority amounts of Al, Au, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Sn, Ti and V in the form of their chelates with organic reagents. From among 14 reagents tested, 8-hydroxyquinoline and diethyldithiocarbamate appeared most suitable for the quantitative sorption up to level of 1 μg l-1 of analyte. Emission spectrometry served as the analytical finish; the nitrous oxide-acetylene flame, electric arc and inductively coupled argon plasma were chosen according to the nature of the element. The procedure is convenient for the determination of the minority analytes in waters

Mercury-204 Determination by Emission Spectroscopy

1965 ◽  
Vol 19 (3) ◽  
pp. 87-89 ◽  
Author(s):  
F. M. Smith
Keyword(s):  
Coefficient Of Variation ◽  
Isotope Shift ◽  
Emission Spectroscopy ◽  
Electrodeless Discharge ◽  
Discharge Lamp ◽  
Isotope Concentration ◽  
Single Determination ◽  
Time Required

The determination of mercury-204 was made by using the isotope shift of the 3984 A mercury line excited by electrodeless discharge. Densitometric traces were made from film recordings of the 3984 A line and the areas under the component peaks were determined. Ratios of each of these areas to the sum of the areas from all the line components are plotted against the isotope concentration to produce a working curve. The coefficient of variation for this method is approximately 11 percent The time required for a single determination (after fabrication of the discharge lamp) is about two hours.

Based on Atomic Spectrometry for the Determination of Titanium Element in Molten Steel

2012 ◽  
Vol 622-623 ◽  
pp. 1528-1531
Author(s):  
Cui Hong Ma ◽  
Wei Qiang Zhang
Keyword(s):  
Molten Steel ◽  
Emission Spectroscopy ◽  
Atomic Emission ◽  
Lag Time ◽  
High Accuracy ◽  
Atomic Spectrometry ◽  
Atomic Emission Spectrometry ◽  
Emission Spectrometry ◽  
Important Significance

Atomic emission spectrometry with high accuracy, short lag time, and low detection limit, it has been widely applied in various fields. The application of atomic emission spectrometry in the converter steelmaking process has an important significance to improve the smelting of speed and steel quality. This article describes the principle of atomic emission spectroscopy (AES) analysis. Spectra obtained by the experimental for qualitative analysis, detected molten steel containing titanium element.

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