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内容简介:本文使用Py-GC/MS技术在550 ℃条件下研究了杨树和PS的热解,以及它们在HZSM-5和Fe/HZSM-5上的热解情况。Py-GC/MS分析结果显示,在HZSM-5的催化下,杨树的热解中碳氢化合物的比例增加,含氧化合物的比例下降。在Fe/HZSM-5的催化下,杨树的热解更有利于酸类、醇类和酯类的生成。在杨树与PS经HZSM-5催化共热解过程中,呋喃和酮类等含氧化合物的相对含量显著降...
内容简介:有机固体废弃物的热转化是获得单环芳烃的一种相对经济可行的方法。为了明确不同热解温度、混合比和热解反应时间对生物质和塑料共热解制备单环芳烃的影响,并寻求最佳实验条件,本研究以玉米秸秆和聚苯乙烯塑料为原料,利用热裂解-气相色谱质谱联用法(Py-GC/ MS)对单环芳烃含量进行分析。同时,利用响应面分析方法,通过三因素三水平的响应面优化试验,建立玉米秸秆和聚苯乙烯共热解制备单环芳烃的二次回归方...
The toxicity, carcinogenicity and persistence of polycyclic aromatic hydrocarbons (PAHs) pose a great threat to the ecological system and human health. The contamination levels, translocation and sour...
Acrylpimaric acid ethylene glycol acrylate was used as the cross-linking agent to prepare rosin-based polymer microspheres through membrane emulsification-microsuspension polymerization. The prepared ...
A method is developed for detection of polycyclic aromatic hydrocarbons (PAHs) and Phthalic Acid Esters (PAEs) in soil samples. Ultrasonic Wave Extraction under airtight circumstances is adopted to ex...
Concentrations of 16 polycyclic aromatic hydrocarbons (PAH) were determined in porcine and bovine kidney, liver, lung, muscle and adipose tissue samples, and in eyeballs (lens and vitreous humour) in ...
The knowledge of sorption-desorption processes of polycyclic aromatic hydrocarbons (PAHs) in natural solids is essential to predict the fate, transport, and environmental risks of these pollutants. In...
Exposure of pig fatteners and dairy cows to polycyclic aromatic hydrocarbons (PAHs) was investigated by analyses of selected indoor and outdoor samples. PAH concentrations (16 U.S. EPA priority PAHs) ...
Polycyclic aromatic hydrocarbons (PAHs) are priority pollutants that arrive in the environment from numerous anthropogenic and natural sources, but the data on their natural sources including wildfire...
PAHs concentration in particulate and gas phase was investigated in indoor and outdoor air of urban residential and roadside homes in a semiarid region of India. Samples were collected during winter ...
Fluorescence analysis, being a non-invasive technique, has become one of the most powerful and widely used techniques for microbiologists and chemists to study various types of sample from photosynthe...
The analysis of major elements and polycyclic aromatic hydrocarbons (PAHs) were carried out on surface hydrothermal sediments collected from the Kairei hydrothermal field on the Central Indian Ridge ...
Street dusts collected from 20 sites as well as three special dust samples collected from chimney of coal-fired plant, smelter and refinery of nonferrous metals and automobile exhaust, respectively, i...
Polycyclic aromatic hydrocarbons (PAHs) were consistently documented in the sediments of the canals draining into Biscayne Bay. The study examines the contribution of urban runoff to PAHs discharges. ...

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