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首页> 外文期刊>Journal of Environmental Science and Health. A, Toxic/Hazardous Substances & Environmental Engineering >Use of Plants to Monitor Contamination of Air by SO2 in and around Refinery
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Use of Plants to Monitor Contamination of Air by SO2 in and around Refinery

机译：利用工厂监测炼厂内及周围的SO2对空气的污染

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The generation of SO_2 from a refinery may affect the surrounding environment. Moreover, SO_2 and its by-products are phytotoxic as berg. This study aims to investigate plant responses to SO_2. The work has been designed with emphasis on using the plants directly in monitoring the contamination of the atmospheric air by SO_2. An assessment was made of the impacts of long-term SO_2 emissions from an oil refinery on plants located in nearby areas that are likely to be exposed to emission fallout. Three different plant species (Prosopis cineraria, Azadirachta indica, and Phoenix dactilifera) common to the environment of the Arabian Gulf were selected at different distances and directions from the refinery. The analysis of the sulphate contents of these plants were used as bioindicators for monitoring SO_2 concentration levels in and around the refinery. The results of this study showed that the three different plant species responsed differently to SO_2 in terms of their sulphate contents. Generally, all three species were found to be sensitive to SO_2 exposure. Furthermore, the concentration of sulphate was found to be much higher closer to the refinery. On the basis of this study, it can be stated that even though SO_2 levels were lower than the permissible limit values, the sulphate contents accumulated in the plants were likely to cause plant injury especially in the vicinity of the source. This suggests that the present environmental guidelines for SO_2 may not protect sensitive plant species.
机译：精炼厂产生的SO_2可能会影响周围的环境。此外，SO_2及其副产物对植物具有伯格的植物毒性。这项研究旨在调查植物对SO_2的反应。设计这项工作的重点是将植物直接用于监测SO_2对大气的污染。评估了炼油厂的长期SO_2排放对附近地区可能遭受排放尘埃影响的工厂的影响。在距炼油厂不同的距离和方向上，选择了阿拉伯海湾环境共有的三种不同的植物物种（Prosopis cineraria，印度的Azadirachta和Phoenix dactilifera）。这些植物中硫酸盐含量的分析被用作生物指标，以监测炼油厂内和周围的SO_2浓度水平。这项研究的结果表明，三种不同的植物在硫酸盐含量方面对SO_2的反应不同。通常，发现所有这三个物种均对SO_2暴露敏感。此外，发现硫酸盐的浓度在靠近精炼厂的地方要高得多。根据这项研究，可以说，即使SO_2的含量低于允许的极限值，植物中积累的硫酸盐含量也可能造成植物伤害，尤其是在源头附近。这表明当前的SO_2环境指南可能无法保护敏感的植物物种。

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