Corona discharge influences ozone concentrations near rats

Goheen, S.C.; Gaither, Kari A.; Anantatmula, Shantha M.; Mong, Gary M.; Sasser, L. B.; Lessor, D.L.

doi:10.1002/bem.10161

Cited by 3 publications

(3 citation statements)

References 27 publications

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“…Exposure to more than 5 mG increases the probability of prostate cancer and Alzheimer's disease for workers and affects the melatonin hormone in women [34][35][36] . Various studies have found a correlation between exposure of children who live near highvoltage lines and some kinds of cancer, such as brain and leukaemia [37][38][39][40][41][42] . To study the effect of the seasons on the magnetic field levels, several of the measurements were conducted at the same location in the summer and spring.…”

Section: Resultsmentioning

confidence: 99%

A radiation survey in an area suspected to be contaminated with a magnetic field from underground transmission cables

Al-Rajhi¹

2014

Journal of King Abdulaziz University-Science

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This work presents a detailed study of the underground transmission cables at 231 locations within Riyadh in order to detect and identify the source of the magnetic field in very low frequencies ELF that might be present. The magnetic field was measured parallel to the path of the cable once and orthogonal with them. The aim is to explain how it affects to the nearby houses. The magnetic field is measured in the summer and spring season. Handheld triaxial EMF magnetic field metre (TM-192, Tenmars Electronics) has been used for magnetic field measurement. The measurement of magnetic field has been carried out at a distance of one metre above the ground. It was found that the magnetic field fall within a range of 1.3-197 mG with an overall mean value of 54.7±42.2 mG. The results show that the mean values of the magnetic field in this study was far below the allowable limit set by international agencies. The results of this study have concluded without doubt that the underground transmission 18 M.A. AL-Rajhi cables constitute a source of exposure to the magnetic field, which means that the presence of net current caused the pollution. Therefore, the study recommends the importance of issuing a legislation to make the magnetic field around the underground transmission cables non-existent.

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Section: Resultsmentioning

confidence: 99%

A radiation survey in an area suspected to be contaminated with a magnetic field from underground transmission cables

Al-Rajhi¹

2014

Journal of King Abdulaziz University-Science

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“…Poorly designed corona discharge ion generators can produce ozone sufficient to affect biological processes, particularly if the air ion generator is operated in a space without adequate ventilation. Even if the system does not produce appreciable levels of ozone in the absence of a test animal, the introduction of an animal into the exposure apparatus can substantially increase ozone generation—likely due to the corona discharge produced at the tips of the animal’s whiskers or due to actions on grounded water [ 129 ]. Despite these potential confounding variables, few animal studies of air ion exposure have attempted to measure these gaseous pollutants or have optimized their systems to minimize such exposures.…”

Section: Discussionmentioning

confidence: 99%

Exposure of laboratory animals to small air ions: a systematic review of biological and behavioral studies

2018

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BackgroundAir ions are molecules of air that have become ionized—that is, they have either lost or gained an electrical charge. Past speculation has suggested that exposure to positive air ions may be harmful to one’s health, while exposure to negative air ions may be associated with beneficial health effects. Air ions arise from natural sources as well as direct-current transmission lines and commercial ionizers. Several recent clinical studies have suggested therapeutic effects of air ions on various types of depression at exposure levels 10- to 1000-fold higher than most previous human studies. The aim of this study was to assess the evidence from studies of laboratory animals for beneficial or adverse effects of air ions on health.MethodsSixty-two studies (1935–2015) in nine topics areas were evaluated for quality and potential systematic bias by ARRIVE guidelines. Standardized mean differences or proportional differences between exposed and control groups were computed for 44 studies to quantitatively assess the strength of the evidence for exposure-related effects.ResultsMany of the studies were conducted before 1990 and exhibited various reporting and methodological deficiencies, including small sample size, failure to control for the influence of potential confounding variables, lack of randomized assignment to treatment groups and blinded analyses, and statistical errors relating to treating group-exposed animals as individuals. The highest quality studies consistently reported no effects of exposure on any of the endpoints examined. There were no evident dose–response relationships within or across studies.ConclusionsExperimental studies of laboratory animals exposed to positive and negative air ions for minutes to years over a five-log unit range of intensities did not suggest any consistent or reliable effects on measures of behavior, learning and memory, neurotransmitters, tracheal function, respiratory infection, cardiovascular function, reproduction and growth, carcinogenesis, or other health endpoints. These data do not provide evidence of adverse or beneficial effects of air ion exposure on health, and did not suggest any biological mechanism of interaction, except perhaps for mechanosensory stimulation of body surfaces by static electric fields at high air ion concentrations.Electronic supplementary materialThe online version of this article (10.1186/s12938-018-0499-z) contains supplementary material, which is available to authorized users.

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“…But Ette and Utah (1973a, b) measured corona discharge currents from grass plots in natural atmospheric electricfield strengths as low as 1.2 kV/m. Recently, Goheen et al (2004) noted that, in strong electric fields, animal hairs and whiskers could act as corona discharge sources and generate ozone. However, Pethig (1983) pointed out that high levels of ionization energy are required for ozone production.…”

Section: Laboratory Corona Activitymentioning

confidence: 99%

Environmental and social impacts of electricity utilization: broadening the debate

Sidaway

2008

Environmentalist

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Exposure of small laboratory animals to powerfrequency high-voltage electric fields was reported to have endocrinological effects, including changes in pineal melatonin levels. It has been assumed that these results are directly attributable to electric-field effects, but this article suggests that air ionization, produced by corona activity at the animals' body surfaces, may have been biologically active and could be relevant to the interpretation of some epidemiological and other studies. Although presently a matter of dispute, there is evidence that atmospheric ionization may be biologically active and could provide an alternative explanation for at least some apparent electromagnetic field interactions with biological subjects. Consideration of the electricity utilization environment as a whole, rather than one selected component, could allow the introduction of lower-cost, precautionary and putative hazard remediation measures.

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Corona discharge influences ozone concentrations near rats

Cited by 3 publications

References 27 publications

A radiation survey in an area suspected to be contaminated with a magnetic field from underground transmission cables

A radiation survey in an area suspected to be contaminated with a magnetic field from underground transmission cables

Exposure of laboratory animals to small air ions: a systematic review of biological and behavioral studies

Environmental and social impacts of electricity utilization: broadening the debate

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