Jump to main content
US EPA
United States Environmental Protection Agency
Search
Search
Main menu
Environmental Topics
Laws & Regulations
About EPA
Health & Environmental Research Online (HERO)
Contact Us
Print
Feedback
Export to File
Search:
This record has one attached file:
Add More Files
Attach File(s):
Display Name for File*:
Save
Citation
Tags
HERO ID
1511162
Reference Type
Journal Article
Title
Green synthesis of biopolymer-silver nanoparticle nanocomposite: an optical sensor for ammonia detection
Author(s)
Pandey, S; Goswami, GK; Nanda, KK
Year
2012
Is Peer Reviewed?
Yes
Journal
International Journal of Biological Macromolecules
ISSN:
0141-8130
EISSN:
1879-0003
Volume
51
Issue
4
Page Numbers
583-589
Language
English
PMID
22750580
DOI
10.1016/j.ijbiomac.2012.06.033
Web of Science Id
WOS:000309310500034
Abstract
Biopolymer used for the production of nanoparticles (NPs) has attracted increasing attention. In the presence article we use aqueous solution of polysaccharide Cyamopsis tetragonaloba commonly known as guar gum (GG), from plants. GG acts as reductive preparation of silver nanoparticles which are found to be <10 nm in size. The uniformity of the NPs size was measured by the SEM and TEM, while a face centered cubic structure of crystalline silver nanoparticles was characterized using powder X-ray diffraction technique. Aqueous ammonia sensing study of polymer/silver nanoparticles nanocomposite (GG/AgNPs NC) was performed by optical method based on surface plasmon resonance (SPR). The performances of optical sensor were investigated which provide the excellent result. The response time of 2-3 s and the detection limit of ammonia solution, 1 ppm were found at room temperature. Thus, in future this room temperature optical ammonia sensor can be used for clinical and medical diagnosis for detecting low ammonia level in biological fluids, such as plasma, sweat, saliva, cerebrospinal liquid or biological samples in general for various biomedical applications in human.
Keywords
Ammonia sensor; Biopolymer; Silver nanoparticles; Nanocomposite; Surface Plasmon resonance
Tags
IRIS
•
Ammonia
Literature Search Update – March 2013 (private)
Literature Search Update – Sept 2015 (private)
Literature Search Results
•
Nitrate/Nitrite
Supplemental LitSearch Update 1600-2015
PubMed
New to project
Home
Learn about HERO
Using HERO
Search HERO
Projects in HERO
Risk Assessment
Transparency & Integrity