Document Detail

Using pulsed wave ultrasound to evaluate the suitability of hydroxyl radical scavengers in sonochemical systems.
MedLine Citation:
PMID:  23238044     Owner:  NLM     Status:  Publisher    
Hydroxyl radical (()OH) scavengers are commonly used in sonochemistry to probe the site and nature of reaction in aqueous cavitational systems. Using pulsed wave (PW) ultrasound with comparative sonochemistry we evaluated the performance of ()OH scavengers (i.e., formic acid, carbonic acid, terephthalic acid/terephthalate, iodide, methanesulfonate, benzenesulfonate, and acetic acid/acetate) in a sonochemical system to determine which ()OH scavengers react only in bulk solution and which ()OH scavengers interact with cavitation bubbles. The ability of each scavenger to interact with cavitation bubbles was assessed by comparing the pulse enhancement (PE) of 10μM of a probe compound, carbamazepine (CBZ), in the presence and absence of a scavenger. Based on PE results, acetic acid/acetate appears to scavenge ()OH in bulk solution, and not interact with cavitation bubbles. Methanesulfonate acts as reaction promoter, increasing rather than inhibiting the degradation of CBZ. For formic acid, carbonic acid, terephthalic acid/terephthalate, benzenesulfonate, and iodide, the PE was significantly decreased compared to in the absence of the scavenger. These scavengers not only quench ()OH in bulk solution but also affect the cavity interface. The robustness of acetic acid/acetate as a bulk ()OH scavenger was validated for pH values between 3.5 and 8.9 and acetic acid/acetate concentrations from 0.5 to 0.1M.
Ruiyang Xiao; David Diaz-Rivera; Ziqi He; Linda K Weavers
Related Documents :
10865394 - Efficacy of minocycline as a root conditioner in comparison to citric acid and tetracyc...
11538694 - Effects of abscisic acid and xanthoxin on elongation and gravitropism in primary roots ...
9690644 - The effects of microbial phytase, citric acid, and their interaction in a corn-soybean ...
1288814 - Fibroblastic growth and attachment on hydroxyapatite-coated titanium surfaces following...
24922094 - Removal of uranium and gross radioactivity from coal bottom ash by cacl2 roasting follo...
15280104 - Plasma amino acid concentrations throughout normal pregnancy and early stages of intrau...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-28
Journal Detail:
Title:  Ultrasonics sonochemistry     Volume:  -     ISSN:  1873-2828     ISO Abbreviation:  Ultrason Sonochem     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-12-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9433356     Medline TA:  Ultrason Sonochem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier B.V. All rights reserved.
Department of Civil, Environmental and Geodetic Engineering, The Ohio State University, Columbus, OH 43210, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Imipramine reverses alterations in cytokines and BDNF levels induced by maternal deprivation in adul...
Next Document:  Transcranial magnetic stimulation at 1Hertz improves clinical symptoms in children with Tourette syn...