Skip to main content

Near-IR Multiplex Bandpass Spectrometer Utilizing Liquid Molecular Filters

Buy Article:

$29.00 plus tax (Refund Policy)

Abstract:

A simple near-infrared spectrometer is described which uses common liquids as near-IR spectral filters. Each filter substance passes multiple bands of near-IR radiation. This new type of spectrometer offers simplicity, cost advantages, and enhanced throughput. The high throughput is useful for ensuring the high signal-to-noise ratio typically needed for chemometrics. The high throughput also allows the use of longer sample pathlengths. The performance of the spectrometer is demonstrated in the determination of methanol through a 1-cm pathlength of water and in the determination of trace amounts of water in organic solvents such as propylene glycol and dimethyl sulfoxide (DMSO). Best-case detection limits were 0.02% (w/w) methanol in water, 0.0006% water in DMSO, and 0.004% water in propylene glycol.

Keywords: Multiplex-bandpass spectrometer; Near-IR; Water analysis

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702953964417

Affiliations: Department of Chemistry, Indiana University, Bloomington, Indiana 47405

Publication date: April 1, 1995

More about this publication?
sas/sas/1995/00000049/00000004/art00015
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more