Dynamic analysis of reactive oxygen nitrogen species in plasma-activated culture medium by UV absorption spectroscopy

被引：22

作者：

Brubaker, Timothy R. ^{[1
,4
]}

Ishikawa, Kenji ^{[2
]}

Takeda, Keigo ^{[3
]}

Oh, Jun-Seok ^{[3
]}

Kondo, Hiroki ^{[2
]}

Hashizume, Hiroshi ^{[2
]}

Tanaka, Hiromasa ^{[2
]}

Knecht, Sean D. ^{[1
]}

Bilen, Sven G. ^{[1
]}

Hori, Masaru ^{[2
]}

机构：

[1] Penn State Univ, Sch Elect Engn & Comp Sci, University Pk, PA 16802 USA

[2] Nagoya Univ, Grad Sch Engn, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648603, Japan

[3] Meijo Univ, Fac Sci & Technol, Tenpaku Ku, 1-501,Shiogamaguchi, Nagoya, Aichi 4688502, Japan

[4] Nagoya Univ, Grad Sch Engn, Nagoya, Aichi, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 2017年 / 122卷 / 21期

关键词：

ATMOSPHERIC-PRESSURE PLASMA; MEDICINE;

D O I：

10.1063/1.4999256

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The liquid-phase chemical kinetics of a cell culture basal medium during treatment by an argonfed, non-equilibrium atmospheric-pressure plasma source were investigated using real-time ultraviolet absorption spectroscopy and colorimetric assays. Depth- and time-resolved NO2- and NO3- concentrations were strongly inhomogeneous and primarily driven by convection during and after plasma-liquid interactions. H2O2 concentrations determined from deconvolved optical depth spectra were found to compensate for the optical depth spectra of excluded reactive species and changes in dissolved gas content. Plasma-activated media remained weakly basic due to NaHCO3 buffering, preventing the H+-catalyzed decomposition of NO2- seen in acidic plasma-activated water. An initial increase in pH may indicate CO2 sparging. Furthermore, the pH-dependency of UV optical depth spectra illustrated the need for pH compensation in the fitting of optical depth data. Published by AIP Publishing.

引用

页数：7

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