Analysis of cold atmospheric-pressure bio-medicine plasmas by using UV absorption spectroscopy

Thana, Phuthidhorn; Ngamjarurojana, Athipong; Boonyawan, Dheerawan

doi:10.1016/j.surfcoat.2016.05.025

Cited by 7 publications

(3 citation statements)

References 30 publications

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“…The control unit [4] modified the high-voltage pulses using a DC-DC converter. The typical reduced electric field strength E/N in plasma volume is < 40 Td with the electron temperature Te ~ 2 eV [5]. The vibrationally stimulated electrons excite nitrogen (N2) and oxygen (O2) molecules present in the atmosphere, resulting in the production of nitric oxide (NO) in the effluent.…”

Section: Device Setupmentioning

confidence: 99%

Study of hydroxyl and nitrite radicals concentration in plasma-activated water by photoluminescence spectroscopy

Klumpara,

Ngamjarurojana,

Boonyawan

2023

J. Phys.: Conf. Ser.

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The atmospheric pressure plasma in water has numerous applications, including utilizing reactive species in the dye degradation process for polluted water remediation. In the current study, an air plasma jet generated atmospheric pressure plasma, transporting reactive oxygen and nitrogen species (RONS) onto the solution surface, such as OH and NO2 radicals, which immediately developed in an aqueous solution. The identification and concentration of radicals are determined using photoluminescence spectroscopy (PL) and irradiation over the surface of an aqueous solution. Based on the reaction between hydroxyl ions and terephthalic acid, fluorimetric methods for hydroxyl ions determination are developed. In addition, 2,3-diamino naphthalene was selected for the nitrite reaction. The jet nozzle-to-solution-surface distance, treatment time, and carrier air flow rate substantially impacted determining the radical’s concentration in aqueous solution.

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Section: Device Setupmentioning

confidence: 99%

Study of hydroxyl and nitrite radicals concentration in plasma-activated water by photoluminescence spectroscopy

Klumpara,

Ngamjarurojana,

Boonyawan

2023

J. Phys.: Conf. Ser.

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“…3. To determine number of radicals particularly in this CAP, the spectroscopy can be rearranged from OES to UV-absorption spectroscopy [10]. And the density of ground state hydroxyl (OH) radicals, could be carried out by UV absorption spectroscopy using the Lambert-Beer's law,…”

Section: Radicals In the Capmentioning

confidence: 99%

Innovative research of plasma physics for life sciences

Boonyawan

2017

J. Phys.: Conf. Ser.

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Abstract. In medicine, cold atmospheric plasma (CAP) for the medical treatment is a new field in plasma application, called plasma medicine. CAP contains mix of excited atoms and molecules, UV photons, charged particles as well as reactive oxygen species (ROS) and reactive nitrogen species (RNS). Typical species in air-CAPs are O 3 , OH, N x O x , and HNO x . The current developments in this field have fuelled the hope that CAP could be an interesting new therapeutic approach in the treatment of cancer. CAP apparently demonstrated effect on cancer cell apoptosis which did not induce cell necrosis or disruption. Moreover, CAP seemed to be selective for cancer cells since it was more effective in tumor cells than in normal nonneoplastic cells. In bioscience, dentistry and veterinary medicine : Since CAP, is delivered at room temperature, which results in less damaging effects on living tissue, while still has the efficiency in disinfection and sterilization. Recent studies proved that it is able to inactivate gram-negative and gram-positive bacteria, fungi, virus, spore, various parasites, and foreign organisms or pathogens without harming tissue. Moreover, cold plasma has been used effectively in medical field such as dental use, inducing apoptosis of malignant cells, stopping bleeding, promoting wound healing and tissue regeneration. Sericin hydrolysates, originating from silkworm is found support cell proliferation, expand cell adhesion and increase cell yield. The covalent linkage between a bioactive protein molecule and polystyrene dish surface via a carbon intermediate layer can slow down the release rate of protein compound into the phosphate buffer saline (PBS) solution. We found that a-C films and a-C:N 2 films show good attachment of human bone marrow-derived mesenchymal stem cells (hBM-MSCs). All of carbon modified-Polystyrene(PS) dishes revealed the less release rate of sericin molecules into PBS solution than PS control.

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“…2). 2,3 In vitro plasma interaction with fungus, and bacterial inhibi- tory and sterilizing dose evaluation were carried out at Chiang Mai University (Fig. 3) and Rangsit University (RSU) (Figs.…”

Section: A Laboratory Analysismentioning

confidence: 99%

Non-Thermal Atmospheric Dielectric Barrier Discharge Plasma, Medical Application Studies in Thailand

Chutsirimongkol¹,

Boonyawan

Polnikorn³

et al. 2016

Plasma Med

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Atmospheric Dielectric Barrier Discharge (DBD) plasma development is one of the most interesting subjects to our group. Fridman et al. * has concluded that Floating DBD Direct Plasma are more effective in bactericidal property, it contains higher free charged particles than indirect type. DBD plasma sources can provide low temperature or non-thermal (cold) plasmas, and these plasmas can be created with ambient air or with a noble gas, such as helium or argon, as the carrier medium. It can be used with an electrode as a contact or noncontact method to target a tissue. However, the drawback of direct DBD plasma is that it will work only in short gap distances, on the order of a few millimeters. Our group has investigated -PLASMA Cell Modulation: PhotoBioCare, Thailand). The major area has been focused on its bactericidal disinfection property, application in common dermatologic problems, in skin aesthetic facial rejuvenation and chronic wound management, from 2012 to 2016.

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Analysis of cold atmospheric-pressure bio-medicine plasmas by using UV absorption spectroscopy

Cited by 7 publications

References 30 publications

Study of hydroxyl and nitrite radicals concentration in plasma-activated water by photoluminescence spectroscopy

Study of hydroxyl and nitrite radicals concentration in plasma-activated water by photoluminescence spectroscopy

Innovative research of plasma physics for life sciences

Non-Thermal Atmospheric Dielectric Barrier Discharge Plasma, Medical Application Studies in Thailand

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