Featured Research

from universities, journals, and other organizations

Crusts From The Tower Of London Suggest Yellowing In The Future

Date:
May 22, 2007
Source:
American Chemical Society
Summary:
Air pollution control regulations are having an unanticipated effect in changing the color of the Tower of London, that famous complex of buildings, started by William the Conqueror, that have housed everything from prisoners and zoo animals to the Crown Jewels of the United Kingdom, scientists in the UK and Italy are reporting.

Air pollution control regulations are having an unanticipated effect in changing the color of the Tower of London, that famous complex of buildings, started by William the Conqueror, that have housed everything from prisoners and zoo animals to the Crown Jewels of the United Kingdom, scientists in the UK and Italy are reporting.

In the study, Peter Brimblecombe and colleagues investigated the origin and transformation of elemental carbon (EC) and organic carbon (OC) from simple organic compounds in the black crusts that have formed over the centuries on stone walls in the tower complex. The blackening of the past, they note, is from EC in coal smoke released since the late 13th Century.

Air pollution control efforts are reducing the amount of sulfur dioxide from coal, with increased OC emissions from motor vehicle exhaust. With less sulfur dioxide (toxic to microorganisms) and more OC, microbes can grow in crusts on buildings and transform compounds contributing a color change.

"In particular, one should note that modern deposits have taken on a slightly different color and now appear more brownish," the reports states. "These changes may arise from oxidation processes in the organic rich materials. The color change is particularly evident here at the Tower of London, where yellowing may become of greater concern than the habitual blackening in the near future."

Article: "Carbon in Black Crusts from the Tower of London"

The research is scheduled for publication in the June 15 issue of ACS' Environmental Science & Technology.


Story Source:

The above story is based on materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Cite This Page:

American Chemical Society. "Crusts From The Tower Of London Suggest Yellowing In The Future." ScienceDaily. ScienceDaily, 22 May 2007. <www.sciencedaily.com/releases/2007/05/070521095434.htm>.
American Chemical Society. (2007, May 22). Crusts From The Tower Of London Suggest Yellowing In The Future. ScienceDaily. Retrieved July 10, 2014 from www.sciencedaily.com/releases/2007/05/070521095434.htm
American Chemical Society. "Crusts From The Tower Of London Suggest Yellowing In The Future." ScienceDaily. www.sciencedaily.com/releases/2007/05/070521095434.htm (accessed July 10, 2014).

Share This



More Matter & Energy News

Thursday, July 10, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Samsung Gear VR Headset Gets Rumored September Debut

Samsung Gear VR Headset Gets Rumored September Debut

Newsy (July 9, 2014) A new report from SamMobile says Samsung’s VR headset is coming later this year. Video provided by Newsy
Powered by NewsLook.com
China's Own Dreamliner Prepares for Takeoff

China's Own Dreamliner Prepares for Takeoff

AFP (July 9, 2014) AFPTV is given exclusive access to a state-owned Chinese company that is building jets for the booming local market in direct competition to Boeing and Airbus. Duration:01:01 Video provided by AFP
Powered by NewsLook.com
'Seeing-Eye' Ring Helps Blind Read With Finger

'Seeing-Eye' Ring Helps Blind Read With Finger

AP (July 8, 2014) The prototype FingerReader is essentially a ring a user wears on their index finger. It has a small camera that scans the text. It also has vibration motors and other cues to help users read in a straight line. (July 8) Video provided by AP
Powered by NewsLook.com
Japan Awaits a Robot Revolution

Japan Awaits a Robot Revolution

Reuters - Business Video Online (July 8, 2014) Japan has long been a leader in robotic technology, but can the industry fulfill the government's hopes of becoming one of the economy's main growth engines? Yonggi Kang reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins