Flame emission spectrometry with repetitive optical scanning in the derivative mode

Abstract

mosphere. The boat is subsequently pushed slowly into an 800 °C inlet. The results of this latter technique on the fuel oil samples exhibited much greater precision (±2.0% relative standard deviation) and good accuracy, so that for routine analysis the latter procedure is considered the more reliable. The precision of the reductive sulfur technique for industrial petroleum samples is summarized in Table VIII.All samples with sulfur greater than 500 ppm were diluted in toluene to approximately 50 ppm for the coulometric data shown here. The number of duplicate analyses per man-day is on the order of twenty (40 determinations), exclusive of dilution time. ACKNOWLEDGMENTThe authors thank Dean Hoggan of ARCO Chemical Co., Anaheim, Calif., for permission to use the ASTM results presented and for valuable help in coordinating this study.

Instruments for rate determinations

“…(c) Atomic absorption line showing first and second derivative curves. (d) Flame emission spectra of barium in presence of calcium (7). (e) and (f) Reaction-rate curves OA integrator is used to generate a reference rate curve that is continuously compared by an OA comparator and maintained equal to the unknown input rate curve (15,16).…”

Analytical coordination chemistry section :

“…60]. 87 The optical system just described which uses two lenses will be replaced with a two Cassegrain mirror arrangement [84] Figure 29.…”

Continuous Wavelet Transform, a powerful alternative to Derivative Spectrophotometry in analysis of binary and ternary mixtures: A comparative study

“…The most important field is its use in resolution enhancement technique to facilitate the detection and location of poorly resolved components in complicated experimental signals [8]. It was applied successfully to chromatography [9], electrochemistry [10][11][12], flow-injection analysis [13] and in all fields of spectroscopy [14][15][16]. In the region of UV-VIS spectroscopy, DS played an important role in resolution of overlapped spectra [17,18].…”