Chart usGOLD   Chart usSILVER  
 
Food for thought
All you have to do is look straight and see the road, and when you see it, don't sit looking at it - walk!
Ayn Rand  
Search for :
LATEST NEWS  :
MINING STOCKS  :
Subscribe
Write Us
Add to Google
Search on Ebay :
PRECIOUS METALS (US $)
Gold 1300.57-1.75
Silver 19.52-0.13
Platinum 1430.50-2.25
Palladium 797.30-1.45
WORLD MARKETS
DOWJONES 16425159
NASDAQ 408652
NIKKEI 14405-13
ASX 541332
CAC 40 440660
DAX 9318144
HUI 222-2
XAU 91-1
CURRENCIES (€)
AUS $ 1.4788
CAN $ 1.5240
US $ 1.3837
GBP (£) 0.8222
Sw Fr 1.2179
YEN 141.2060
CURRENCIES ($)
AUS $ 1.0688
CAN $ 1.1012
Euro 0.7227
GBP (£) 0.5942
Sw Fr 0.8801
YEN 102.0100
RATIOS & INDEXES
Gold / Silver66.63
Gold / Oil12.51
Dowjones / Gold12.63
COMMODITIES
Copper 3.030.01
WTI Oil 103.940.18
Nat. Gas 4.540.01
Market Indices
Metal Prices
RSS
Precious Metals
Graph Generator
Statistics by Country
Statistics by Metals
Advertise on 24hGold
Projects on Google Earth
How nano silver turns people blue
Published : November 15th, 2012
276 words - Reading time : 0 - 1 minutes
( 0 vote, 0/5 ) Print article
 
    Comments    
Tweet
NANO Magazine, in its November 13, 2012 article, reports that How nano silver turns people blue.

Extract :
Keywords :   Silver |

 

 

 

 

Ingesting silver — in antimicrobial health tonics or for extensive medical treatments involving silver — can cause argyria, condition in which the skin turns grayish-blue. Brown researchers have discovered how that happens. The process is similar to developing black-and-white photographs, and it's not just the silver.

Ingesting silver — in antimicrobial health tonics or for extensive medical treatments involving silver — can cause argyria, a condition in which the skin turns grayish-blue.“It’s the first conceptual model giving the whole picture of how one develops this condition,” said Robert Hurt, professor of engineering at Brown and part of the research team. “What’s interesting here is that the particles someone ingests aren’t the particles that ultimately cause the disorder.”

Scientists have known for years argyria had something to do with silver. The condition has been documented in people who (ill advisedly) drink antimicrobial health tonics containing silver nanoparticles and in people who have had extensive medical treatments involving silver. Tissue samples from patients showed silver particles actually lodged deep in the skin, but it wasn’t clear how they got there.

As it turns out, argyria is caused by a complex series of chemical reactions, Hurt said. His paper on the subject, authored with Brown colleagues Jingyu Liu, Zhongying Wang, Frances Liu, and Agnes Kane, is published in the journal ACS Nano.

Hurt and his team show that nanosilver is broken down in the stomach, absorbed into the bloodstream as a salt and finally deposited in the skin, where exposure to light turns the salt back into elemental silver and creates the telltale bluish hue. That final stage, oddly, involves the same photochemical reaction used to develop black-and-white photographs.

 

 

Read the rest of the article at NANO Magazine
Tweet
Rate :Average note :0 (0 vote)View Top rated
Previous article by
24hGoldWire
All articles by
24hGoldWire
Next article by
24hGoldWire
Receive by mail the latest articles by this author  
Latest comment posted for this article
Be the first to comment
Add your comment
TOP ARTICLES
Editor's picks
RSS feed24hGold Mobile
Gold Data CenterGold & Silver Converter
Gold coins on eBaySilver coins on eBay
Technical AnalysisFundamental Analysis
Most recent articles by 24hGoldWire
11/21/2012
11/16/2012
10/31/2012
10/11/2012
6/13/2012
All Articles
Comment this article
You must be logged in to comment an article8000 characters max.
 
Sign in
User : Password : Login
Sign In Forgot password?
 
Receive 24hGold's Daily Market Briefing in your inbox. Go here to subscribe or unsubscribe.
Disclaimer