OSA's Digital Library

Applied Spectroscopy

Applied Spectroscopy

| PUBLISHED BY SAS — AVAILABLE FROM SAS AND OSA

  • Vol. 34, Iss. 3 — May. 1, 1980
  • pp: 338–348

Atomic Nitrogen Spectra in the Argon Inductively Coupled Plasma (ICP)

S. J. Northway, R. M. Brown, and R. C. Fry

Applied Spectroscopy, Vol. 34, Issue 3, pp. 338-348 (1980)


View Full Text Article

Acrobat PDF (1064 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations
  • Export Citation/Save Click for help

Abstract

Nonresonant, low-energy (visible-near infrared) atomic nitrogen transitions from high-energy (11 to 14.4 eV) doublet and quartet excited N(I) states are observed in the 1.5 to 2.2 kW argon inductively coupled plasma (ICP) when gaseous compounds containing this element (N) are introduced as samples. A Table of ICP excited nitrogen (I) lines and relative emission intensities from 2225 to 10 950 Å is presented. A number of new nitrogen lines are observed for which transitions have not been assigned. The ICP nonresonance emission spectrum of atomic nitrogen [N(I)] is found to be especially good in the near infrared region. The use of near infrared nonresonant N(I) lines for the analytical detection of nitrogen is reported. The relative intensity of N(I) emission (derived from N2 samples) is at a maximum between the turns of the rf load coil. An "equal intensity" contour "map" of N(I) emission in the ICP is presented using N2 as the sample. The present limit of nitrogen detection in argon for nonoptimized conditions is 1.0 ppm (v/v) using continuous sample introduction (limited by photomultiplier noise). For gas sampling loop injections, the present detection limit is 0.3 μg (limited by atmospheric leakage or permeation contamination into the sampling loop system). Considerable improvement is expected in the future. The relative contributions to the baseline signal of: (1) atmospheric nitrogen entrainment in the argon plasma, (2) atmospheric permeation into the present Teflon gas sampling loop system, and (3) argon tank contaminants are evaluated. Suggestions for further improvement are given. The response is linear, and the short-term precision for repetitive introduction of samples containing 20 μg of N2 is 0.4% RSD using a 157 μl Teflon gas sampling loop.

Citation
S. J. Northway, R. M. Brown, and R. C. Fry, "Atomic Nitrogen Spectra in the Argon Inductively Coupled Plasma (ICP)," Appl. Spectrosc. 34, 338-348 (1980)
http://www.opticsinfobase.org/as/abstract.cfm?URI=as-34-3-338

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

If you are accessing the full text through a member bundle, please use the Enhanced HTML link to gain access to the citation lists and other restricted features. Note that accessing both the PDF and HTML versions of an article will count as only one download against your account.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

If you are accessing the full text through a member bundle, please use the Enhanced HTML link to gain access to the citation lists and other restricted features. Note that accessing both the PDF and HTML versions of an article will count as only one download against your account.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited