Issue 10, 2014

Spectroscopic characterization and comparison between biologics, organics and mineral compounds using pulsed micro-hollow glow discharge

Abstract

A new mode of operation – pulsed – is demonstrated for compound identification of solid materials in the form of dry powders. Both plasma and analytical utility are characterized spectroscopically. The acquired emission spectra provided molecular and elemental information. The microgram sample analysis capability and atmospheric pressure operation are demonstrated for benign and biological organics, a commercial fertilizer and other inorganic materials. The plasma temperature is estimated by spectral simulation of the NO (A2Σ+ → X2Π) bands, and the inferred temperature is 1300 °C. Atomic transitions from C (1P01S) and molecular bands from CH (B2Σ → X2Π) and CH (A2Δ → X2Π) were manifestly observed in the optical emission spectra of organic materials. Relative intensities of common spectral signatures could distinguish biological agents from common benign organic materials. High-resolution spectra were particularly useful in resolving and identifying atomic transitions such as Mg, Ca, Fe and Si for the inorganic materials. Such a detector system has the capability to rapidly sense hazards with the added advantage of portability.

Graphical abstract: Spectroscopic characterization and comparison between biologics, organics and mineral compounds using pulsed micro-hollow glow discharge

Article information

Article type
Paper
Submitted
09 Jun 2014
Accepted
03 Jul 2014
First published
03 Jul 2014

J. Anal. At. Spectrom., 2014,29, 1791-1798

Spectroscopic characterization and comparison between biologics, organics and mineral compounds using pulsed micro-hollow glow discharge

R. L. Vander Wal, C. K. Gaddam and M. J. Kulis, J. Anal. At. Spectrom., 2014, 29, 1791 DOI: 10.1039/C4JA00187G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements