Results 241 to 250 of about 52,307 (296)

Atomic Absorption Spectrophotometry

Medicine, Science and the Law, 1973
Historically flame emission spectroscopy was developed first. Routine analysis showed the advantage of measuring absorption over emission for many metals. Instrumentation requirements are:— 1. Pressure regulators and flowmeters with the sources of gases; 2. Atomizer; 3. Burner; 4. Optical system; 5. Detector. In addition, an energy source, e.g.,
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Atomic Absorption Spectrophotometry in Water Analysis

American Industrial Hygiene Association Journal, 1969
Abstract The application of AAS to the analysis of major and certain trace elements in fresh and natural waters has been discussed. Sodium, potassium, calcium and magnesium were determined either directly or after dilution with deionized water. Pre-concentration of trace elements by simple evaporation was found to be satisfactory and compared favorably
S D, Soman, V K, Panday, K T, Joseph
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Determination of molybdenum by atomic-absorption spectrophotometry

Talanta, 1972
A new procedure is described for precise estimation of molybdenum by atomic-absorption spectrophotometry using an airacetylene flame. Phosphoric acid was found to be effective in suppressing interference by Fe(III), Al, Sb(III), Ca, Mg, Pb and Mn(II).
A, Purushottam, P P, Naidu, S S, Lal
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Determination of thallium by atomic absorption spectrophotometry

Fresenius' Zeitschrift für analytische Chemie, 1966
The determination of thallium by atomic-absorption Spectrophotometry is described. Many substances interfere with the direct analysis of thallium under the conditions chosen. However, these interferences can be overcome by adding a lithium, potassium, or sodium buffer (5000 ppm). In this way the deviations caused by foreign substances can be reduced to
W. A. Veenendaal, H. L. Polak
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Atomic absorption spectrophotometry of antimony

Analytica Chimica Acta, 1969
Abstract The atomic absorption of antimony in combination with extraction of the chloride complex provides a suitable determination of antimony in various materials. The effect of variables on antimony absorption and the extraction of antimony were studied.
Masaaki Yanagisawa, Masami Suzuki, Tsugio Takeuchi   +2 more
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Atomic Absorption Spectrophotometry with the Absorption Tube Technique

Spectroscopy Letters, 1970
Abstract A device to increase the sensitivity of the atomic absorption spectrophotometric measurement by elongating the absorption path length has originally been developed by Fuwa and Vallee and the present authors called it “absorption tube technique”.
Chuzo Iida, Masato Nagura
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Determination of mercury by atomic-absorption spectrophotometry

Talanta, 1981
A flameless atomic-absorption system has been developed for the determination of low concentrations of mercury in gaseous, solid and liquid samples of organic and inorganic materials.
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Atomic absorption spectrophotometry in quantitative histochemistry

The Histochemical Journal, 1977
Histochemists have acknowledged the need for quantitation in their discipline, and a majority of them report their histochemical findings with some quantitative information (Anderson & Glenner, 1973; Rosenquist, 1976). It seems to be the consensus of the histochemistry fraternity that 'direct' histochemical quantitation is the most satisfactory method,
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Determination of cadmium by atomic-fluorescence and atomic-absorption spectrophotometry

Talanta, 1966
The adaptation of a conventional atomic-absorption/flameemission spectrophotometer to the measurement of atomic-fluorescence in an air-acetylene flame is described. The determination of cadmium on the same instrument by both atomic-fluorescence and absorption shows that, even with a rather simple and inefficient means of exciting and measuring ...
R M, Dagnall, T S, West, P, Young
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