CDC STACKS serves as an archival repository of CDC-published products including scientific findings, journal articles, guidelines, recommendations, or other public health information authored or co-authored by CDC or funded partners.
As a repository, CDC STACKS retains documents in their original published format to ensure public access to scientific information.
i
ROS evaluation for a series of CNTs and their derivatives using an ESR method with DMPO
-
2013
-
-
Source: J Phys Conf Ser. 429(12029)
Details:
-
Alternative Title:J Phys Conf Ser
-
Personal Author:
-
Description:Carbon nanotubes (CNTs) are important materials in advanced industries. It is a concern that pulmonary exposure to CNTs may induce carcinogenic responses. It has been recently reported that CNTs scavenge ROS though non-carbon fibers generate ROS. A comprehensive evaluation of ROS scavenging using various kinds of CNTs has not been demonstrated well. The present work specifically investigates ROS scavenging capabilities with a series of CNTs and their derivatives that were physically treated, and with the number of commercially available CNTs. CNT concentrations were controlled at 0.2 through 0.6 wt%. The ROS scavenging rate was measured by ESR with DMPO. Interestingly, the ROS scavenging rate was not only influenced by physical treatments, but was also dependent on individual manufacturing methods. Ratio of CNTs to DMPO/ hydrogen peroxide is a key parameter to obtain appropriate ROS quenching results for comparison of CNTs. The present results suggest that dangling bonds are not a sole factor for scavenging, and electron transfer on the CNT surface is not clearly determined to be the sole mechanism to explain ROS scavenging.
-
Subjects:
-
Source:
-
Pubmed ID:26300949
-
Pubmed Central ID:PMC4544674
-
Document Type:
-
Funding:
-
Volume:429
-
Issue:12029
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type:
[PDF-712.35 KB]
