Contribution to the Chemistry of Plasma-Activated Water

被引：99

作者：

Julak, J. ^{[1
,2
]}

Hujacova, A. ^{[1
,2
]}

Scholtz, V. ^{[3
]}

Khun, J. ^{[3
]}

Holada, K. ^{[1
,2
]}

机构：

[1] Charles Univ Prague, Fac Med 1, Inst Immunol & Microbiol, Prague 12800 2, Czech Republic

[2] Gen Univ Hosp, Prague 12800 2, Czech Republic

[3] Univ Chem & Technol, Dept Phys & Measurements, Prague 16628 6, Czech Republic

来源：

PLASMA PHYSICS REPORTS | 2018年 / 44卷 / 01期

关键词：

ATMOSPHERIC-PRESSURE PLASMA; NITRIC-OXIDE; NONTHERMAL PLASMA; ANTIMICROBIAL ACTIVITY; ESCHERICHIA-COLI; AQUEOUS-SOLUTION; GAS PLASMA; INACTIVATION; PEROXYNITRITE; SUPEROXIDE;

D O I：

10.1134/S1063780X18010075

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Plasma-activated water (PAW) was prepared by exposure to nonthermal plasma produced by a positive dc corona discharge in a transient spark regime. The activation of water was performed in atmosphere of various surrounding gases (air, nitrogen, carbon dioxide, and argon). This PAW retains its biological activity, measured on the mouse neuroblastoma cells culture, even after storage for more than one year. The highest hydrogen peroxide content was found for PAWs prepared in the atmospheres of argon or carbon dioxide, whereas the PAWs prepared in air and nitrogen exhibited lower hydrogen peroxide content. The acidity of PAWs mediated by nitric and nitrous acid formation displayed an opposite trend. It is concluded that the long-lasting biological effect of PAW is mediated by hydrogen peroxide in acid milieu only, whereas other possible active components decompose rapidly.

引用

页码：125 / 136

页数：12

共 54 条

[1] Generation mechanism of hydroxyl radical species and its lifetime prediction during the plasma-initiated ultraviolet (UV) photolysis [J].