sulfur dioxide (SO2)

二氧化硫 (SO2)
  • 文章类型: Journal Article
    目前的证据表明,空气中的污染物通过出现小于胎龄(SGA)或足月低出生体重(TLBW)对胎儿生长产生不利影响。该研究的目的是批判性地评估有关环境污染与SGA或TLBW发生率之间关联的现有文献。在Pubmed/MEDLINE进行了全面的文献检索,WebofScience,科克伦图书馆,EMBASE,和谷歌学者使用预定义的纳入和排除标准。该方法符合PRISMA准则。系统评价方案在PROSPERO注册,ID号:CRD42022329624。因此,69篇选定的论文描述了环境污染物对SGA和TLBW发生的影响,颗粒物≤10μm(PM10)的赔率(ORs)为1.138,颗粒物≤2.5μm(PM2.5)为1.338,1.173代表臭氧(O3),1.287二氧化硫(SO2),一氧化碳(CO)为1.226。分析的所有8项研究都验证了暴露于挥发性有机化合物(VOCs)是SGA或TLBW的危险因素。SGA发生的高危人群中的孕妇,即,那些生活在城市地区或接近污染源的人,并发症的风险增加。了解孕妇的确切暴露时间有助于改善产前护理和对SGA胎儿的及时干预。然而,我们的研究结果中强调的普遍空气污染表明,迫切需要在日常生活中采取适应性措施来减轻全球环境污染。
    Current evidence suggests that airborne pollutants have a detrimental effect on fetal growth through the emergence of small for gestational age (SGA) or term low birth weight (TLBW). The study\'s objective was to critically evaluate the available literature on the association between environmental pollution and the incidence of SGA or TLBW occurrence. A comprehensive literature search was conducted across Pubmed/MEDLINE, Web of Science, Cochrane Library, EMBASE, and Google Scholar using predefined inclusion and exclusion criteria. The methodology adhered to the PRISMA guidelines. The systematic review protocol was registered in PROSPERO with ID number: CRD42022329624. As a result, 69 selected papers described the influence of environmental pollutants on SGA and TLBW occurrence with an Odds Ratios (ORs) of 1.138 for particulate matter ≤ 10 μm (PM10), 1.338 for particulate matter ≤ 2.5 μm (PM2.5), 1.173 for ozone (O3), 1.287 for sulfur dioxide (SO2), and 1.226 for carbon monoxide (CO). All eight studies analyzed validated that exposure to volatile organic compounds (VOCs) is a risk factor for SGA or TLBW. Pregnant women in the high-risk group of SGA occurrence, i.e., those living in urban areas or close to sources of pollution, are at an increased risk of complications. Understanding the exact exposure time of pregnant women could help improve prenatal care and timely intervention for fetuses with SGA. Nevertheless, the pervasive air pollution underscored in our findings suggests a pressing need for adaptive measures in everyday life to mitigate worldwide environmental pollution.
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  • 文章类型: Systematic Review
    越来越多的证据表明间质性肺病(ILD)与空气污染之间存在因果关系,都是为了疾病的发展,并推动疾病进展。我们的目标是提供关于空气污染之间关联的全面文献综述,ILD,包括特发性肺纤维化(IPF)。
    我们从六个在线数据库中进行了系统搜索。两名独立作者(DL和CF)选择了研究,并使用纽卡斯尔-渥太华量表(NOS)严格评估了偏倚的风险。研究结果通过叙事综合和荟萃分析呈现。当至少有三项研究检查相同的污染物-健康结果对时,仅进行荟萃分析。所有评估污染物浓度的等效增量,使用随机效应模型。
    确定了在13个国家或地区进行的24项观察性研究。正在调查的污染物包括臭氧(O3),二氧化氮(NO2),直径为10微米或更小(PM10)和2.5微米或更小(PM2.5)的颗粒物,二氧化硫(SO2),一氧化碳(CO),一氧化氮(NO)和氮氧化物(NOx)。我们进行了荟萃分析,以评估急性加重(AE)-IPF的估计风险比(RR)与暴露于空气污染物浓度每增加10μg/m3有关。包括O3、NO2、PM10和PM2.5。荟萃分析显示,PM2.5中AE-IPF的风险增加之间存在显着关联,RR为1.94(95%CI1.30-2.90;p=0.001)。所有纳入研究的结果表明,暴露于空气污染物的增加可能与ILD患者的一系列健康问题有关。
    关于空气污染物和ILD关系的现有研究的匮乏强调了在该领域进行进一步全面研究的必要性。现有数据表明,降低大气中PM2.5的水平可能会降低ILD患者的AE频率和严重程度。
    UNASSIGNED: There is a growing body of evidence suggesting a causal relationship between interstitial lung disease (ILD) and air pollution, both for the development of the disease, and driving disease progression. We aim to provide a comprehensive literature review of the association between air pollution, and ILD, including idiopathic pulmonary fibrosis (IPF).
    UNASSIGNED: We systematically searched from six online database. Two independent authors (DL and CF) selected studies and critically appraised the risk of bias using the Newcastle-Ottawa Scale (NOS). Findings are presented through a narrative synthesis and meta-analysis. Meta-analyses were performed exclusively when there was a minimum of three studies examining identical pollutant-health outcome pairs, all evaluating equivalent increments in pollutant concentration, using a random effects model.
    UNASSIGNED: 24 observational studies conducted in 13 countries or regions were identified. Pollutants under investigation encompassed ozone (O3), nitrogen dioxide (NO2), Particulate matter with diameters of 10 micrometers or less (PM10) and 2.5 micrometers or less (PM2.5), sulfur dioxide (SO2), carbon monoxide (CO), nitric oxide (NO) and nitrogen oxides (NOx). We conducted meta-analyses to assess the estimated Risk Ratios (RRs) for acute exacerbations (AE)-IPF in relation to exposure to every 10 μg/m3 increment in air pollutant concentrations, including O3, NO2, PM10, and PM2.5. The meta-analysis revealed a significant association between the increased risk of AE-IPF in PM2.5, yielding RR 1.94 (95% CI 1.30-2.90; p = 0.001). Findings across all the included studies suggest that increased exposure to air pollutants may be linked to a range of health issues in individuals with ILDs.
    UNASSIGNED: A scarcity of available studies on the air pollutants and ILD relationship underscores the imperative for further comprehensive research in this domain. The available data suggest that reducing levels of PM2.5 in the atmosphere could potentially reduce AE frequency and severity in ILD patients.
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  • 文章类型: Journal Article
    在目前的工作中,我们使用DFT来研究SO2与41种可掺入MOF接头的战略性官能化苯的相互作用。确定苯基膦酸(-PO3H2)与SO2的相互作用能最强(-10.1kcal/mol),比未官能化苯的结合能(〜4.1kcal/mol)高约2.5倍。为了更好地了解SO2与官能化苯相互作用的性质,建立了与SO2相关络合物的电子再分布密度图。此外,选择了三个表现最好的官能团(-PO3H2,-CNH2NOH,-OSO3H)对IRMOF-8有机连接体进行修饰,并通过GrandCanonicalMonteCarlo(GCMC)模拟计算其SO2吸附能力。我们的结果表明,在低压下绝对体积吸收有很大增加,表明建议的官能化技术不仅可用于增强MOF中的SO2吸收能力,而且可用于各种多孔材料中。
    In the present work, we used DFT in order to study the interaction of SO2 with 41 strategically functionalized benzenes that can be incorporated in MOF linkers. The interaction energy of phenyl phosphonic acid (-PO3H2) with SO2 was determined to be the strongest (-10.1 kcal/mol), which is about 2.5 times greater than the binding energy with unfunctionalized benzene (-4.1 kcal/mol). To better understand the nature of SO2 interactions with functionalized benzenes, electron redistribution density maps of the relevant complexes with SO2 were created. In addition, three of the top performing functional groups were selected (-PO3H2, -CNH2NOH, -OSO3H) to modify the IRMOF-8 organic linker and calculate its SO2 adsorption capacity with Grand Canonical Monte Carlo (GCMC) simulations. Our results showed a great increase in the absolute volumetric uptake at low pressures, indicating that the suggested functionalization technique can be used to enhance the SO2 uptake capability not only in MOFs but in a variety of porous materials.
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  • 文章类型: Journal Article
    Background: Previous studies suggested that exposure to air pollution could increase risk of asthma attacks in children. The aim of this study is to investigate the short-term effects of exposure to ambient air pollution on asthma hospital admissions in children in Beijing, a city with serious air pollution and high-quality medical care at the same time. Methods: We collected hospital admission data of asthma patients aged ≤ 18 years old from 56 hospitals from 2013 to 2016 in Beijing, China. Time-stratified case-crossover design and conditional Poisson regression were applied to explore the association between risk of asthma admission in children and the daily concentration of six air pollutants [particulate matter ≤ 2.5 μm (PM2.5), particulate matter ≤ 10 μm (PM10), sulfur dioxide (SO2), nitrogen dioxide (NO2), carbon monoxide (CO), and ozone (O3)], adjusting for meteorological factors and other pollutants. Additionally, stratified analyses were performed by age, gender, and season. Results: In the single-pollutant models, higher levels of PM2.5, SO2, and NO2 were significantly associated with increased risk of hospital admission for asthma in children. The strongest effect was observed in NO2 at lag06 (RR = 1.25, 95%CI: 1.06-1.48), followed by SO2 at lag05 (RR = 1.17, 95%CI: 1.05-1.31). The robustness of effects of SO2 and NO2 were shown in two-pollutant models. Stratified analyses further indicated that pre-school children (aged ≤ 6 years) were more susceptible to SO2. The effects of SO2 were stronger in the cold season, while the effects of NO2 were stronger in the warm season. No significant sex-specific differences were observed. Conclusions: These results suggested that high levels of air pollution had an adverse effect on childhood asthma, even in a region with high-quality healthcare. Therefore, it will be significant to decrease hospital admissions for asthma in children by controlling air pollution emission and avoiding exposure to air pollution.
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  • 文章类型: Journal Article
    烟气脱硫(FGD)是通常用于处理来自固定和移动源的废气的基本工艺。从烟气中去除SO2可以通过不同的技术进行,吸收为大范围的应用提供了最高的通用性。本文提供的数据来自在装有规整填料的中试湿式洗涤器中进行的FGD实验(HastelloyC-22,Mellapak250。X).实验旨在确定模拟烟气在不同操作条件下的SO2脱除效率。与普通湿法烟气脱硫工艺中观察到的相似。实验数据是根据气体速度报告的,烟气中SO2的浓度,液/气进料比,流体的温度和压力。数据集还包括几个工作参数的测量,即色谱柱中的压力下降,洗涤水pH值,出口气体的相对湿度和流出烟气脱硫装置的气体和液体的温度。这些数据的收集可能有助于未来的研究和烟气脱硫装置的分析,还设计/改进带有规整填料的大型吸收塔,使用各种洗涤液和不同的操作条件。
    Flue-Gas Desulphurization (FGD) is a fundamental process commonly adopted for the treatment of exhausts deriving from both stationary and mobile sources. The removal of SO2 from flue gasses can be made through different technologies and absorption offers the highest versatility for a large spectrum of applications. The data presented in this paper derive from FGD experiments carried out in a pilot wet scrubber equipped with a structured packing (Hastelloy C-22, Mellapak 250.X). The experiments aim to determine the SO2 removal efficiency from a simulated flue-gas in different operating conditions, similar to those observed in common wet FGD processes. Experimental data are reported in terms of gas velocity, concentration of SO2 in the flue-gas, liquid/gas feed ratio, fluids temperature and pressure. The dataset also includes the measurements of several working parameters, i.e. pressure drops in the column, wash water pH, relative humidity of the outlet gas and temperatures of gas and liquid flowing out of the FGD unit. The collection of these data could be useful in future studies and in the analysis of FGD units, also to design/improve large-scale absorption columns with structured packing, using various scrubbing liquids and in different operating conditions.
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  • 文章类型: Journal Article
    亚硫酸盐被认为是酿酒中抗菌的主要添加剂,抗氧化和抗氧化活性。当前对二氧化硫(SO2)对消费者健康的潜在负面影响的关注集中在替代或减少SO2使用上。我们的工作旨在制定基于使用选定的发酵剂文化的战略,能够在不添加SO2的情况下进行葡萄酒发酵。在实验室规模的发酵中,将四种选定的酿酒酵母本地菌株作为混合发酵剂培养物进行了测试。入门文化,特征在于组成混合发酵剂的两种菌株的优势百分比相似,并且能够生产出具有化学和芳香特征最佳组合的葡萄酒,被选中。在添加和不添加SO2的情况下,将这种混合培养物作为起始剂进行了试验。通过在没有SO2的酿酒中使用较高的接种物水平。选定的发酵剂证实,在不添加SO2的酿酒中,优势能力高于添加SO2的发酵,证明亚硫酸盐的添加并不能保证发酵剂在本地微生物区系上的绝对优势。拟议的生物技术工具允许生产具有“功能特性”的优质葡萄酒,由于添加NO-SO2的葡萄酒具有较高的多酚含量和抗氧化活性。
    Sulfites are considered the main additives in winemaking for their antimicrobial, antioxidant and anti-oxidasic activities. The current concern about the potential negative effects of sulfur dioxide (SO2) on consumer health has focused the interest on replacing or reducing SO2 use. Our work aims to develop a strategy based on the use of selected starter culture, able to perform wine fermentation without SO2 addition. Four selected Saccharomyces cerevisiae indigenous strains were tested as mixed starter cultures in laboratory scale fermentations. The starter culture, characterized by a similar percentage of dominance of both strains composing the mixed starter and able to produce a wine characterized by the best combination of chemical and aromatic characteristics, was chosen. This mixed culture was tested as a starter at pilot scale with and without SO2 addition, by using a higher inoculum level in the vinification without SO2. The selected starter confirmed higher dominance ability in vinification without SO2 addition than in SO2-added fermentation, demonstrating that sulfite addition is not a guarantee to reach an absolute dominance of starter culture on indigenous microflora. The proposed biotechnological tool allowed to produce good quality wines possessing also \"functional properties\", as NO-SO2 added wines were characterized by high polyphenol content and antioxidant activity.
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  • 文章类型: Journal Article
    探讨了电子商务发展对我国城市SO2空气污染防治的影响及作用机制。研究表明,首先,电子商务的发展可以显著降低我国城市SO2空气污染程度,这有助于改善空气质量,与电子商务服务相比,电子商务应用在降低SO2空气污染程度和改善空气质量方面更有效。第二,电子商务的发展可以显著减少中国城市的SO2排放,降低城市单位国内生产总值(GDP)的SO2排放量。与电子商务服务相比,电子商务应用对减少城市单位GDP中的SO2排放具有更大的作用。最后,通过减少中国城市的SO2排放,电子商务可以减少单位GDP中的SO2排放量,降低SO2空气污染程度,改善空气质量,与电子商务服务相比,电子商务应用程序可以更显著地减少城市单位GDP中的SO2排放量,从而显著降低SO2空气污染程度,改善我国城市空气质量。
    This paper probes the impact and working mechanism of e-commerce development on prevention and control of SO2 air pollution in cities in China. The research reveals that, first, e-commerce development can significantly reduce the SO2 air pollution degree in cities in China, which helps improve air quality, and compared with e-commerce services, an e-commerce application is more effective at reducing SO2 air pollution degree and improving air quality. Second, e-commerce development can significantly reduce SO2 emissions in cities in China, decreasing SO2 emissions per unit of gross domestic product (GDP) of cities. Compared with e-commerce services, an e-commerce application has a greater effect on reducing SO2 emissions in urban unit GDP. Finally, by reducing SO2 emissions in cities in China, e-commerce can reduce SO2 emissions in unit GDP, reducing SO2 air pollution degree and improving air quality, and in comparison with e-commerce services, an e-commerce application can reduce SO2 emissions in city unit GDP more significantly, thus significantly reducing SO2 air pollution degree and improving air quality in cities in China.
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  • 文章类型: Journal Article
    Air Q2.2.3 was used to predicted hospital admissions respiratory disease cases due to SO2 and NO2 exposure in two sectors of Egypt during December 2015 to November 2016. Levels were 19, 22 µg/m3 at Ain Sokhna sector and 92, 78 µg/m3 at Shoubra El-Khaima sector for SO2 and NO2, respectively. These levels were less than the Egyptian Permissible limits (125 µg/m3 in urban and 150 µg/m3 in industrial for SO2, 150 µg/m3 in urban and industrial for NO2). Results showed that relative risks were 1.0330 (1.0246 - 1.0414) and 1.0229 (1.0171 - 1.0287) at Ain Sokhna sector while they were 1.0261 (1.0195 - 1.0327) and 1.0226 (1.0169 - 1.0283) at Shoubra El-Khaima sector for SO2 and NO2, respectively. The highest cases of HARD were found in Shoubra El-Khaima sector; 311 cases at 120 - 129 µg/m3 of SO2 and 234 cases at 120 - 129 µg/m3 of NO2. While, in Ain Sokhna, HARD were 18 cases at 50 - 59 µg/m3 of SO2 and 15 cases at 60 - 69 µg/m3 of NO2. The excess cases found in Shoubra El-Khaima sector as compared to those in Ain Sokhna sector, may be attributed to the higher density of population and industries in Shoubra El-Khaima sector.
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  • 文章类型: Journal Article
    二氧化硫(SO2)的小时数据,氮氧化物(NOx),和可吸入颗粒物(PM10)在33个月的时间内来自青岛的空气质量监测站网络,中国东部的主要沿海城市,连同地面和高空气象数据,用于表征该地区这些污染物的时空变化以及气象条件在污染事件中的作用。在人口稠密或工业区与郊区商业或住宅或沿海旅游区之间,所有三种污染物的浓度存在很大差异,但是住宅商业区的较旧部分和较新部分之间以及旧工业区和新开发工业区之间的差异相对较小。小波分析揭示了所有三种污染物的强烈季节周期,根据污染物和位置的周期性变化,以及具有季节依赖性的振幅和相位的昼夜和半日变化。发现低风速是该地区污染累积的主要因素。这些结果可能对城市规划,开发和实施与青岛经济发展相似的其他沿海地区的有效空气污染控制策略有用。
    Hourly data for sulfur dioxide (SO2), nitrogen oxides (NOx), and inhalable particulate matter (PM10) over a 33-month period from a network of air quality monitoring stations across Qingdao, a major coastal city in eastern China, along with surface and upper-air meteorological data, are used to characterize the spatiotemporal variability of these pollutants in the region and the role of meteorological conditions play in pollution episodes. Large differences in the concentrations of all three pollutants are found between densely populated or industrial areas and suburban commercial or residential or coastal tourist areas, but the differences are relatively small between older and newer parts of the residential-commercial areas and between old and newly developed industrial areas. Wavelet analyses revealed a strong seasonal cycle for all three pollutants, introseasonal variability with a periodicity depending on pollutant and location, and diurnal and a semi-diurnal variability with season-dependent amplitude and phase. Low wind speed is found to be the leading factor for pollution buildup in the region. These results may prove useful for urban planning and development and implementation of effective air pollution control strategies for other coastal regions with economic development similar to Qingdao.
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  • 文章类型: Journal Article
    尽管大气环境中二氧化硫(SO2)污染对健康的影响并不新鲜,流行病学研究和平行实验研究表明,急性SO2暴露会引起谷氨酸介导的兴奋性毒性,甚至有助于脑缺血的结局。此外,自由基相关的炎症反应是造成神经元损伤和随之而来的脑部疾病的原因。然而,很少有药物可用于预防炎症反应和减轻随后吸入SO2的有害损伤。这里,我们显示内源性大麻素2-花生四酰基甘油(2-AG)通过抑制环氧合酶-2(COX-2)过表达来防止SO2吸入的神经毒性,这种作用似乎是通过大麻素受体1(CB1)依赖性丝裂原活化蛋白激酶/核因子κB(NF-κB)信号通路介导的。此外,CB1依赖性过氧化物酶体增殖物激活受体γ(PPARγ)的表达是2-AG介导的对SO2神经炎症反应中NF-κB偶联COX-2升高的重要调节因子。这一发现提供了内源性2-AG调节可能具有治疗作用的证据,可以防止受污染地区吸入SO2引起的神经功能障碍。
    Although the health effects of sulfur dioxide (SO2) pollution in the atmospheric environment are not new, epidemiological studies and parallel experimental investigations indicate that acute SO2 exposure causes glutamate-mediated excitotoxicity and even contributes to the outcome of cerebral ischemia. Additionally, the free radical-related inflammatory responses are responsible for neuronal insults and consequent brain disorders. However, few medications are available for preventing the inflammatory responses and relieving the subsequent harmful insults from SO2 inhalation. Here, we show that endocannabinoid 2-arachidonoylglycerol (2-AG) prevents neurotoxicity from SO2 inhalation by suppressing cyclooxygenase-2 (COX-2) overexpression, and this action appears to be mediated via cannabinoid receptor 1 (CB1)-dependent mitogen-activated protein kinase/nuclear factor κB (NF-κB) signaling pathways. Furthermore, CB1-dependent peroxisome proliferator activated receptor γ (PPARγ) expression was an important modulator of the 2-AG-mediated resolution on NF-κB-coupled COX-2 elevation in response to SO2 neuroinflammation. This finding provides evidence of a possible therapeutic effect of endogenous 2-AG regulation for protecting against neurological dysfunction from SO2 inhalation in polluted areas.
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