The atomic fluorescence characteristics and determination of chromium in an argon-separated air-acetylene flame

Norris, J.D.; West, T.S.

doi:10.1016/0003-2670(72)80004-7

Cited by 11 publications

(2 citation statements)

References 16 publications

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“…There was no observable Se emission from this (which was also the case with other Cd/Zn/Se EDLs) EDL. It was previously assumed that the temperature dependence of the radiant output for 0.0001 (6) 0.000001 (6) 0.005 (7) 0.0005 (8) 0 . 0 2 (2) 0.00015 (9) 0.003 (10) 0 .…”

Section: Resultsmentioning

confidence: 99%

Use of a power divider for thermostated electrodeless discharge lamps in atomic fluorescence spectrometry

Knapp¹,

Molnar²,

Winefordner³

1974

Anal. Chem.

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In recent years, electrodeless discharge lamps (EDLs) have been put forth as intense sources for atomic spectrometry. However, it has not been until recently that work involving temperature-controlled (thermostated) EDLs has resulted in stable, intense, reliable EDL sources for atomic spectrometry. It has previously been demonstrated that single-and multielement EDLs are very sensitive t o temperature changes when operated with a thermostated antenna ( I , 2). The insensitivity of spectral output of EDLs operated with the thermostated "A"-antenna to changes in microwave power has been discussed previously (1-3). Some of the reasons given for using thermostated EDLs have been: microwave generators are difficult t o stabilize adequately, whereas air temperatures can be regulated with good precision; and changes in the coupling efficiency between the microwave field and the EDL discharge can, in the absence of temperature control, lead to drastic changes in lamp spectral output. Until recently ( 4 ) , one microwave generator per antenna had been used when operating EDLs. This is readily understood when one considers the myriad of papers on EDLs and the art and skill needed to utilize EDLs for analytical studies. However. with the insensitivity of thermostated EDLs to changes in microwave power, it is readily conceivable that more than one thermostated EDL could be operated simultaneously from one microwave generator utilizing a microwave power divider and that such a system would be very advantageous for multielement analysis. Norris and West ( 4 ) have reported the use of a two-port power divider for two dual-element EDLs and mentioned that it was a n economical means of illuminating a flame cell with radiation from more than one EDL simultaneously.In this study. thermostated EDLs operated a t their optimal temperatures and powered by one microwave generator using a power divider are evaluated. Detection limits for atomic fluorescence spectrometric measurement of several elements with these EDLs were obtained and compared with other published results.

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Section: Resultsmentioning

confidence: 99%

Use of a power divider for thermostated electrodeless discharge lamps in atomic fluorescence spectrometry

Knapp¹,

Molnar²,

Winefordner³

1974

Anal. Chem.

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“…Numerous analytical methods were employed for the determination of manganese in different types of matrices including atomic emission spectrophotometry [2,3], atomic absorption spectrometry [4][5][6][7], laser induced breakdown spectroscopy [8,9] atomic fluorescence spectroscopy [10], neutron activation analysis [11], electroanalytical method [12] and spectrophotometry [13][14][15][16][17]. Spectrophotometric methods occupy special position due to their simplicity, less expensive instrumentation and high sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Exploiting a Simple Spectrophotometric Method for the Determination of Manganese in High Strength Line Pipe Steels

Shao

2011

AMR

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The use of high strength line pipe steels is beneficial for the reduction the cost of gas transmission pipelines by enabling high pressure transmission of large volumes of gas. The high strength line pipe steels will become the preferred materials for modern natural gas transmission pipeline. It was well known that manganese was an important element in the high strength line pipe steels. In this paper, a simple spectrophotometric method was described for determination of manganese in high strength line pipe steels. The method was based on the oxidation-reduction reaction between ammonium persulfate and manganese(II) producing manganese(VII) in the presence of silver nitrate as a catalyst. The characteristic wavelength of maximum absorption of manganese(VII) was obtained locating at 530 nm. Under the optimum reaction conditions the absorption value was proportional to the concentration of manganese in the range of 0.18%~2.0% (R2 = 0.9997), and the relative standard deviation was less than 3.0% (n=5). The proposed method was applied successfully to determine manganese in API grade X80 line pipe steel and API grade X70 line pipe steel samples.

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Atlas of Spectral Lines

Parsons

Smith

Bentley

1975

Handbook of Flame Spectroscopy

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The atomic fluorescence characteristics and determination of chromium in an argon-separated air-acetylene flame

Cited by 11 publications

References 16 publications

Use of a power divider for thermostated electrodeless discharge lamps in atomic fluorescence spectrometry

Use of a power divider for thermostated electrodeless discharge lamps in atomic fluorescence spectrometry

Exploiting a Simple Spectrophotometric Method for the Determination of Manganese in High Strength Line Pipe Steels

Atlas of Spectral Lines

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