Dr. Sharon Marx Profile

Dr. Sharon Marx

Research Scientist

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 29 December 2004 Paper

Infrared fiber optic evanescent wave spectroscopy and its applications for the detection of toxic materials in water, in situ and in real time

Yosef Raichlin, Sharon Marx, Leah Gerber, Abraham Katzir

Proceedings Volume 5617, (2004) https://doi.org/10.1117/12.597441

KEYWORDS: Spectroscopy, Absorption, Chemical elements, Sensors, Mid-IR, FT-IR spectroscopy, Waveguides, Fiber optics, Infrared radiation, Infrared sensors

Read Abstract +

We have been developing a novel infrared fiberoptic system for on-line monitoring of toxic materials in water. The system is based on fiberoptic evanescent wave spectroscopy (FEWS) and it operates in the middle infrared (Mid-IR) spectral range 3µm - 30µm. This spectral range covers the “fingerprint” region where many molecules have characteristic absorption. The system is based on silver halide (AgClBr) fibers which are flexible, non-toxic, non-hygroscopic and highly transparent in the Mid-IR. A short segment of unclad AgClBr serves as a sensing element, which is coupled to a tunable IR source (e.g. FTIR or tunable IR laser) via two long IR fibers. This setup makes it possible to carry out absorption measurements on water, in a remote location (in situ) and in real time. By flattening the short sensor element one can increase the sensitivity. Using this system we have already monitored pollutants in water in concentrations of the order of 1ppm. The system allows a highly sensitive and selective detection of several pollutants, simultaneously. With additional improvement this fiberoptic sensor system will be more sensitive, selective, affordable, robust and easy to operate. Such a system could to detect the presence of toxic chemicals, such as pesticides, in drinking water at levels lower than 1ppm.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years