高频臭氧发生器及其应用

高频臭氧发生器及其应用由清华大学产管处臭氧技术研究室研制成功的高频臭氧发生器已形成多种规格的系列化产品。该项产品及应用技术已在食品加工、贮藏、运输、矿泉水、饮料生产、生化制药与化妆品、卫生用品的消毒、除味、防霉净化等方面得到广泛应用，解决了传统的物理...     

臭氧防治大棚蔬菜病虫效果好

臭氧是一种无色略带臭味的气体．溶于水后就会成为一种强氧化裁，对活细胞有较强的杀灭作用。通过臭氧发生器可将空气中的氧气在高压、高频电的电离作用下转化为臭氧，进而在生产中再加以利用，其功率一般在200瓦以下。近年来，笔者利用臭氧发生器在西安周迪温室大棚开展了施放臭氧防治温室大棚蔬菜病虫的试验示范．取得了较好的效果。[第一段]     

微间隙板式高频臭氧发生器性能试验

以获得高效率高浓度臭氧为目标,研究了平板式微间隙臭氧发生器的放电特点和性能。结果表明:由于采用0.4mm微间隙,臭氧浓度最高可达230g·Nm-3;在不降低臭氧产生效率情况下,发生器体积比传统方式小;施加在放电单元上电压远低于电介质击穿电压,从而提高了臭氧发生器使用寿命和工作稳定性。     

臭氧保鲜机的设计

详细介绍臭氧保鲜机的电路设计原理及其电器元件的选择．保鲜机选用市售元件制作ＩＣ控制电路，对电子脉冲激发臭氧发生器实现自动循环间歇工作，把库房内臭氧（Ｏ３）浓度控制在１０～２１ｍｇｍ－３内．利用臭氧发生器半电晕放电产生Ｏ３，投资少，运行费低，节能高效率     

作用独特、高效简便的高频臭氧发生器及其应用技术

作用独特、高效简便的高频臭氧发生器及其应用技术北京风险防灾工程公司（１０００７１）高德林臭氧（Ｏ３）在自然界是伴随雷电产生的一种气体，自发现臭氧以来，科学家做了大量的研究工作，发现它具有很多奇特的作用：强氧化、高效消毒、脱色、除臭、催化等。１８５７年...     

臭氧保鲜机的设计

详细介绍臭氧保鲜机的电路设计原理及其电器元件的选择，保鲜机选用市售元件制作ＩＣ控制电路，对电子脉冲激发臭氧发生器实现自动循环间歇工作，把库房内臭氧（Ｏ３）浓度控制在１０￣２１ｍｇ·ｍ＾－３内。利用臭氧发生器半电晕放电产生Ｏ３，投资少，运行费低，节能高效率。     

臭氧技术在温室无公害蔬菜生产中的应用

随着各种温室病害臭氧防治器的推广应用，有关臭氧防治温室植物病害的应用报告愈来愈多，多数实践已证明了利用合适浓度的臭氧并在一定的作用时间内防治温室病害是非常有效的。在对温室病害臭氧防治技术肯定的同时，也应注意到臭氧对植物生长产生损害的负面影响，一些厂家生产的臭氧发生器已给许多用户造成全棚毁秧的巨大损失，也使得臭氧的病害防治效能大打折扣。之所以会出现这些问题，同科研部门、生产厂家、使用人员和推广人员缺乏相关知识以及温室病害臭氧防治技术宣传力度小有直接关系。     

臭氧发生器在设施蔬菜上使用效果的研究

本文对臭氧发生器在蔬菜苗期使用上的效果进行了研究，结果表明，臭氧在蔬菜苗期不仅能减轻苗期病害，而且对培育壮苗，提高蔬菜抗寒性都有一定效果。     

不同浓度臭氧处理对水质及 黄沙鳖生产性能的影响

利用不同浓度臭氧处理黄沙鳖育苗的水体,在水温27(±1)℃条件下,检测水体的水质变化及黄沙鳖生长、成活情况。结果表明:臭氧能显著降解养殖水体中氨氮、亚硝酸盐氮含量,且能提高水体中的溶解氧含量,水质净化效果显著。投放0.1 mg/L臭氧处理的育苗水体,黄沙鳖的平均体重为17.5(±0.34)g,成活率达到91.33%,效果最好。     

臭氧在果蔬贮藏保鲜中的应用

概述了臭氧的保鲜机理及发生原理和臭氧在果蔬贮运中的消毒、杀菌和防腐保鲜作用,并指出了臭氧在果蔬保鲜中的应用前景和存在问题。     

A Reevaluation of the Ozone Budget with HALOE UARS Data: No Evidence for the Ozone Deficit

Recently, additional ozone production mechanisms have been proposed to resolve the ozone deficit problem, which arises from greater ozone destruction than production in several photochemical models of the upper stratosphere and lower mesosphere. A detailed ozone model budget analysis was performed with simultaneous observations of O(3), HCl, H(2)O, CH(4), NO, and NO(2) from the Halogen Occultation Experiment (HALOE) on the Upper Atmosphere Research Satellite (UARS) under conditions with the strongest photochemical control of ozone. The results indicate that an ozone deficit may not exist. On the contrary, the use of currently recommended photochemical parameters leads to insufficient ozone destruction in the model.     

应用臭氧·液体菌种生产无公害金针菇技术研究

[目的]为了改变金针菇生产周期长、常规消毒药剂残留量大、对人体的刺激严重等缺点。[方法]试验设置臭氧消毒+液体菌种、甲醛消毒+液体菌种、臭氧消毒+固体菌种、甲醛消毒+固体菌种4个组合处理,以甲醛消毒+固体菌种为对照研究比较了臭氧和液体菌种的应用技术。[结果]臭氧+液体菌种组合比对照菌丝长满培养袋时间短10 d左右,产量和产品质量明显提高,污染率下降。[结论]液体菌种和臭氧消毒在金针菇生产上是值得推广的技术。     

臭氧技术及臭氧植保机械在农业中的应用

随着农药替代技术的发展，以臭氧及臭氧水为代表的臭氧植保技术逐渐在现代生态农业领域得到广泛应用。在介绍臭氧杀虫灭菌机理的基础上，系统阐述了臭氧技术在土壤熏蒸、作物病虫害防治、种子处理、果蔬贮藏、牧场消毒除臭等农业生产领域的应用；在介绍背负式臭氧植保机械、固定式臭氧植保机械、自走式臭氧植保机械、臭氧植保飞机等臭氧相关植保机械的研究及应用现状基础上，剖析了臭氧技术在农业领域的应用优势及制约因素，最后展望了臭氧技术的应用及推广前景。对于进一步研制开发新型臭氧植保机械,并拓展其在农业生产上的应用具有一定的指导意义。     

Occurrence of High Ozone Concentrations in the Air near Metropolitan Washington

Relatively high concentrations of surface ozone and the indication that ozone is the inciting agent in fleck injury to tobacco were reported previously (1). Considerable interest therefore attaches to weather parameters on the high-ozone days which may throw light on the source and on the physicochemical processes affecting the ozone level. A source in the direction of nearby Washington, D.C., and photochemical production of the oxidant are indicated. Days with appropriate wind direction but low peak ozone concentration are discussed in terms of coexisting weather parameters. The weather ensemble found on highozone days is considered in relation to instances of fleck injury for which peak ozone levels were not measured.     

Indication of increasing solar ultraviolet-B radiation flux in alpine regions

Measurements at the Jungfraujoch High Mountain Station (Swiss Alps, 47 degrees N, 3576 meters above sea level) indicate that there has been a slight increase of about 1 percent per year in the flux of solar ultraviolet-B radiation (290 to 330 nanometers) since 1981. A Robertson-Berger detector was used to measure solar erythemal radiation. The increase can be related to a long-term ozone depletion.     

Evidence for ozone formation in human atherosclerotic arteries

Here, we report evidence for the production of ozone in human disease. Signature products unique to cholesterol ozonolysis are present within atherosclerotic tissue at the time of carotid endarterectomy, suggesting that ozone production occurred during lesion development. Furthermore, advanced atherosclerotic plaques generate ozone when the leukocytes within the diseased arteries are activated in vitro. The steroids produced by cholesterol ozonolysis cause effects that are thought to be critical to the pathogenesis of atherosclerosis, including cytotoxicity, lipid-loading in macrophages, and deformation of the apolipoprotein B-100 secondary structure. We propose the trivial designation "atheronals" for this previously unrecognized class of steroids.     

Solar proton events: stratospheric sources of nitric oxide

The production of nitric oxide (NO) in the stratosphere during each of the solar proton events of November 1960, September 1966, and August 1972 is calculated to have been comparable to or larger than the total average annual production of NO by the action of galactic cosmic rays. It is therefore very important to consider the effect of solar proton events on the temporal and spatial distribution of ozone in the stratosphere. A study of ozone distribution after such events may be particularly important for validating photochemical-diffusion models.     

Growth of continental-scale metro-agro-plexes, regional ozone pollution, and world food production

Three regions of the northern mid-latitudes, the continental-scale metro-agro-plexes, presently dominate global industrial and agricultural productivity. Although these regions cover only 23 percent of the Earth's continents, they account for most of the world's commercial energy consumption, fertilizer use, food-crop production, and food exports. They also account for more than half of the world's atmospheric nitrogen oxide (NOx,) emissions and, as a result, are prone to ground-level ozone (O(3)) pollution during the summer months. On the basis of a global simulation of atmospheric reactive nitrogen compounds, it is estimated that about 10 to 35 percent of the world's grain production may occur in parts of these regions where ozone pollution may reduce crop yields. Exposure to yield-reducing ozone pollution may triple by 2025 if rising anthropogenic NOx emissions are not abated.     

Changes in stratospheric ozone

The ozone layer in the upper atmosphere is a natural feature of the earth's environment. It performs several important functions, including shielding the earth from damaging solar ultraviolet radiation. Far from being static, ozone concentrations rise and fall under the forces of photochemical production, catalytic chemical destruction, and fluid dynamical transport. Human activities are projected to deplete substantially stratospheric ozone through anthropogenic increases in the global concentrations of key atmospheric chemicals. Human-induced perturbations may be occurring already.