锌在模拟工业大气环境下的腐蚀行为研究

目的研究不同时间下锌在SO2环境中的腐蚀特性。方法采用室内加速试验法,向大气加速腐蚀箱中通入25 mg/L SO2气体,进行模拟工业大气环境下的加速腐蚀试验。对腐蚀后金属材料进行质量增量测量和电化学测试,通过XRD,SEM等表征锌腐蚀产物及腐蚀形貌,研究腐蚀特性。结果初期阶段锌在SO2环境中的腐蚀速率逐渐增加,到腐蚀后期逐渐降低,1/Rct值先增大后减小,锌的腐蚀产物中的元素包括Zn,O和少量的S,主要产物为Zn4SO4(OH)6。结论初期在锌表面生成的腐蚀产物疏松,SO2能够通过产物层到达基体,促进腐蚀,不具有保护性。到后期,产物增多并且致密使SO2与基体接触的概率降低,从而使腐蚀速率减缓。     

The effects of autophagy in rat tracheal epithelial cells induced by silver nanoparticles

Environmental Science and Pollution Research - The massive use of silver nanoparticles (AgNPs) is potentially harmful to exposed humans. Although previous studies have found that AgNPs can induce...     

MicroRNA: a novel implication for damage and protection against ionizing radiation

Environmental Science and Pollution Research - Ionizing radiation (IR) is a form of high energy. It poses a serious threat to organisms, but radiotherapy is a key therapeutic strategy for various...     

Effects of UV-modified biochar derived from phytoremediation residue on Cd bioavailability and uptake in Coriandrum sativum L. in a Cd-contaminated soil

Environmental Science and Pollution Research - Biochar has been applied widely as an amendment in the remediation of contaminated soil to immobilize the heavy metals. However, the role of...     

Geochemistry of heavy metal-contaminated sediments from the Four River inlets of Dongting lake,China

Environmental Science and Pollution Research - The concentrations of major and trace elements in the sediments from the Four River inlets of Dongting Lake were analysed. The results show that the...     

Revealing the impact of water conservancy projects and urbanization on hydrological cycle based on the distribution of hydrogen and oxygen isotopes in water

Environmental Science and Pollution Research - In recent years, the development and utilization of water resources have imposed great impacts on hydrological characteristics and ecological...     

Impacts of land use change on ecosystem service value in Lijiang River Basin,China

Environmental Science and Pollution Research - It is of great significance for the coordinated development of the environment and the economy to study the impact of the human driving factors of...     

Iodine enrichment and the underlying mechanism in deep groundwater in the Cangzhou Region,North China

Environmental Science and Pollution Research - The lack of information on the origin and behavior of iodine in deep groundwater restricts the development and use of groundwater resources. To...     

Delayed association of acute particulate matter 2.5 air pollution exposure with loss of complexity in cardiac rhythm dynamics: insight from detrended fluctuation analysis

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Sustainability prioritization of sewage sludge to energy scenarios with hybrid-data consideration: a fuzzy decision-making framework based on full consistency method and fusion ranking model

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