摘要:

In this paper we study the usefulness of photon statistics techniques in quantum beat spectroscopy when the intensity of the detected light beam is very small. It is concluded that accurate results can be obtained if the Fourier transform of the time-interval probability is measured.

ISSN:0038-7010    

DOI:10.1080/00387018908054020

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

Selenium is determined by atomic emission technique with microwave induced helium plasma as the excitation source. A continuous hydride generation system using a peristaltic pump, an effective serpentine hydride generator and a gas-liquid separator is developed and interfaced to the He-plasma. The selenium hydride and the reaction by-products are carried directly and continuously by the He carrier gas (0.6 L/min) into the plasma sustained in a tangential torch. The power level is 100 W and the tangential helium flow-rate is 4.5 L/min. The detection limit (3 0) is 40 ppb, the linear dynamic range is over three orders of magnitude, and the precision is 6.7% RSD for a 1 ppm solution. Applications to a soil sample showed comparable results to a conventional hydride generation atomic absorption system.

ISSN:0038-7010    

DOI:10.1080/00387018908054021

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

This is a scanned image of the original Editorial Board page(s) for this issue.

ISSN:0038-7010    

DOI:10.1080/00387018908054009

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor