Dr. Chenglong Wang Profile

Dr. Chenglong Wang

Research Fellow at South China Normal Univ

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 | 9 September 2002 Paper

Detection of environment pollution by measuring chloroplast delayed light emission

Chenglong Wang, Da Xing, Juan Wang

Proceedings Volume 4920, (2002) https://doi.org/10.1117/12.481977

KEYWORDS: Photosynthesis, Environmental sensing, Sensors, Pollution, Pollution detection, Pollution control, Inspection, Charge-coupled devices, Sulfur, Microchannel plates

Read Abstract +

Delayed light emission (DLE), which mostly produced from chioroplast, can be an indicator of plant living ability. We have proved that environment stress can reduce the intensity of DLE. Our prior experimental results showed that there exists a linear relationship between DLE intensity and chloroplast concentration in a certain concentration range. Plant chloroplast's energy is sensitive to environmental stress. Considering the close relationship between DLE and environment stress we directly detected environment pollution by measuring DLE with a sensitive imaging system, which consists of a tungsten lamp excitation source, an ICCD digital camera, a controller and computer. Instrumental parameters (optical excitation time, optical source power, and exposure time) were adjusted independently to optimize measurements. Computer through controller collected all data. All images were analyzed with WINVIEW software. This experiments conducted with plant leaves treated with model acid rain (vitriol, pH 5.0) and exposed to moderately elevated troposphere sulfur dioxide environment demonstrated the environment stress could be inspected sensitively by measuring plant DLE. Our experimental results showed that when acid rain less than five zero could be inspected sensitively. It was also indicated that moderately elevated sulfur dioxide cause direct damage to the plant by reducing photosynthetic activity through partial stomata closure and other mechanics.

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