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禁用偶氮染料检测技术进展 总被引:3,自引:0,他引:3
本文阐述了对禁用染料进行检测的技术及其进展,特别是分析了目前为各国采用的纺织品中禁用染料检测标准的特点,对染料工业和纺织工业的生产和发展具有重要的现实意义和指导作用。 相似文献
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文中对德国禁用偶氮染料有关法定执行时间、检测对象和范围、主要检测仪器、样品处理方法等情况进行了介绍及探讨,可供有关部门参考。 相似文献
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禁用偶氮染料检测技术进展 总被引:4,自引:0,他引:4
禁用部分偶氮染料已成为当今世界市场上人们极为关注的热门话题。该文阐述了对禁用染料进行检测的技术及其进展,主要介绍了德国政府规定的法定禁用染料测试标准,对染料工业和纺织工业的生产和发展具有重要的现实意义和指导作用。 相似文献
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纺织品禁用偶氮染料的检测 总被引:4,自引:0,他引:4
介绍了纺织品禁用偶氮染料的致癌性、检测标准、部分主要标准的要求,详述了用气-质联用仪(GC-MS)检测禁用偶氮染料的原理、方法设置和结果分析、假阳性结果的识别及防范。 相似文献
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德国禁用偶氮染料检测方法的最新进展 总被引:1,自引:0,他引:1
德国政府1998年4月又以官方文件的形式发布了经修订的《日用品测试 纺织日用品上使用某些偶氮染料的检测方法》和新制订的《日用品测试 聚酯纤维上使用某些偶氮染料的检测方法》.本文详细介绍了这两个方法与以前的方法的差异和技术要点。 相似文献
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纺织品中德国禁用偶氮染料检测方法研究 总被引:3,自引:0,他引:3
德国政府发布法规,禁止在纺织品中使用在特定条件下(还原)能分解出致癌芳香妥的偶氮染料。本文对使用禁用染料的纺织品进行还原研究,并用气相色谱-质谱联用分析法(GC-MS)检测致癌芳香胺,初步建立了一套检测纺织品中禁用偶氮染料的方法。 相似文献
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以酿酒酵母为试验材料,采用正交试验设计优化发酵果糖1,6-二磷酸(FBP)的条件:酵母添加量,蔗糖添加量,渗透剂比例,微量营养素含量。结果表明,酵母5%,蔗糖9%,甲苯、吐温-20各1%,MgCl2·6H2O 0.12%为发酵FBP的优化条件。在此基础上进行了酵母细胞破碎和固定化研究,使FBP含量得以进一步提高。同时活性干酵母发酵FBP的优化条件被应用到废旧酵母,提高了废旧酵母的利用价值。 相似文献
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The contribution of extracellular metabolites (EM) to the decolorant activity of newly isolated photosynthetic bacteria was observed. The decolorization process was considered to occur by two paths: photochemical decolorization by EM and photobiological decolorization by photosynthetic bacteria. In addition, the decolorization of several azo dyes by EM under black light and fluorescent light irradiation was investigated. It was found that EM were capable of decolorizing the azo dyes directly under visible light irradiation, and the overall dye decolorization followed first-order decay kinetics. Moreover, the decolorization reaction is a nonenzymatic reaction and the unknown metabolite with the decolorizing ability had an apparent molecular weight lower than 3 kDa as determined by ultrafiltration. In addition, its decolorization activity was stable even after heating sterilization at 121 degrees C for 10 min. Furthermore, the decolorization rate increased with increasing optical intensity, temperature and EM concentration, and decreased with increasing initial dye concentration. Decolorization of dye was best at pH 8. 相似文献
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Sekar S Surianarayanan M Ranganathan V MacFarlane DR Mandal AB 《Environmental science & technology》2012,46(9):4902-4908
Industrial wastewaters such as tannery and textile processing effluents are often characterized by a high content of dissolved organic dyes, resulting in large values of chemical and biological oxygen demand (COD and BOD) in the aquatic systems into which they are discharged. Such wastewater streams are of rapidly growing concern as a major environmental issue in developing countries. Hence there is a need to mitigate this challenge by effective approaches to degrade dye-contaminated wastewater. In this study, several choline-based salts originally developed for use as biocompatible hydrated ionic liquids (i.e., choline sacchrinate (CS), choline dihydrogen phosphate (CDP), choline lactate (CL), and choline tartarate (CT)) have been successfully employed as the cosubstrate with S. lentus in the biodegradation of an azo dye in aqueous solution. We also demonstrate that the azo dye has been degraded to less toxic components coupled with low biomass formation. 相似文献
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对苹果皮中原花青素的提取工艺条件进行了优化,在单因素的基础上,采用L9( 34)正交试验设计,研究乙醇浓度、料液比、提取时间和提取温度对苹果皮中原花青素得率的影响.结果表明,对苹果皮原花青素得率的影响顺序是:乙醇浓度>料液比>提取时间>提取温度,有机溶剂提取苹果皮原花青素的最佳工艺条件是:乙醇浓度60%,料液比1∶10 (g/mL),提取温度65℃,提取时间120min,原花青素得率达到2.82mg/g于皮. 相似文献