生态纺织品检测问题及对策

随着社会的发展和进步,生态理念日渐融入人们的生产和生活之中,并在各个行业都有所体现.如今,结合生态理念衍生出的生态纺织品,在改善人们生活质量方面发挥着重要作用.因此,为更好地发挥生态纺织品在人们日常生活中的作用,做好生态纺织品检测就显得极为重要.文章通过分析常用的生态纺织品检测技术,深度剖析生态纺织品检测过程中存在的问...     

浅谈我国生态纺织品的生存与发展

随着社会的不断发展,人民生活理念的不断提高,人们对服装的要求不仅仅是保暖、舒适、时尚,还加上了环保、健康等元素。这就意味着人们越来越重视生态纺织品的加工与生产。本文先阐述了发展生态纺织品的意义,然后通过对中国生态纺织品的历史发展与当今中国生态纺织品的现状的研究,总结出了阻碍生态纺织品发展的原因,为今后生态纺织品的发展提出了科学建议。     

2009年新版Oeko-Tex标准100解读

随着人们对生态和环境关注程度的日益加深,生态纺织品的概念深入人心,开发满足消费者要求的生态纺织品已成为我国纺织品参与全球竞争的方向,因而有必要跟踪和掌握国际生态纺织品的最新发展动态.就2009年1月新发布的最新版本Oeko-Tex Standard 100中的技术内容进行全文报导,并重点关注了新版标准中的修订内容.     

生态纺织品检测问题及对策分析

随着我国经济的飞速发展,当前社会大众的生活质量得到了飞速提升,人们在消费过程中,对于商品的生态环保非常重视.在此背景下,纺织领域在不断发展的过程中也逐渐向着生态环保的方向发展,经过多年的不断优化,当前我国生态纺织品的检测技术水平也得到了一定的提升.文章主要以生态纺织品检测为研究主题,阐述现阶段生态纺织品的检测类型与检测技术,并分析当前生态纺织品在检测过程中出现的问题,最终探讨相应的解决对策.     

从不同视角看我国生态纺织品发展趋势

本文首先阐述了生态纺织品的概念和主要表现,然后从和谐社会的建设、欧美生态纺织品法规、国际纺织品竞争等不同视角阐述了走生态纺织品道路的必然趋势,并详述了我国在生态纺织品研发、生态纺织品检测标准体系、生态纺织品认证等方面所采取的一系列措施.     

AOX——一类应引起重视的纺织化学污染源

当可持续发展已成为21世纪主题的时候,特别是随着人们对生态和环境问题关注程度的加深,除市场驱动力外,"清洁生产"、"绿色产品"、"生态纺织品"、"生态学"等概念已经大范围进入了国际纺织品服装贸易领域.     

时代呼唤全生态纺织品标准

通过对现有生态纺织品标准进行分析,指出它们均属于狭义生态纺织品标准.并介绍全生态纺织品概念及全生态纺织品标准基本框架内容,详细分析全生态纺织品标准的作用,对制定全生态纺织品标准的可行性进行探讨.     

生态纺织品标准体系研究

研究生态纺织品标准体系的结构及内容.从纺织品生产生态学、消费生态学和废弃生态学等生态的角度,将目前国内外的生态纺织品标准分为3层结构,建立了生态纺织品标准体系框架图,并对国内外生态纺织品检测标准进行了全面地收集与整理,明确提出了生态纺织品系统、全面的检测项目,以及今后需要建立的检测标准.     

纺织品生产与消费中的生态问题综述

一、纺织品的“绿色革命”具有重要意义 纺织品是人们日常生活中接触最多的工业产品。随着社会的不断进步和人们生活质量的日益提高，人们越来越重视生存环境和自身的健康水平。使用“绿色纺织品”、“生态纺织品”成为当今世界人们的生活需求。     

发展生态纺织品推动企业拓展国际市场

本文介绍了生态纺织品的国内外标准、发展概况以及最新的生态技术,并对国内外相关生态纺织品技术标准进行了比较研究,对我国发展生态纺织品、推动企业生态纺织品认证、拓展国际市场提出了一定的建议.     

TripleTOF^TM 5600液相色谱高分辨串联质谱仪

液相色谱高分辨串联质谱仪（TripleTOFTM 5600 LC/MS/MS）是AB Sciex公司新近推出的分析仪器,它是世界上首台集准确质量数、高分辨率、高速扫描速度和高定量灵敏度等优点于一体的质谱系统平台。     

三聚氰胺检测五LC/MS/MS法分析食品中的三聚氰胺

奶粉类食品前处理 1.所需试剂及耗材 1%三氯乙酸溶液,0.1mol/L盐酸溶液,5%氨水-甲醇溶液,以及Oasis MCX固相萃取柱(60mg/3mL,或相当者),使用前分别用3mL甲醇、3mL0.1mol/L盐酸溶液对固相萃取柱进行预处理,并保持柱体的湿润.     

Determination of aflatoxins in food using LC/MS/MS

 A liquid chromatography/atmospheric pressure chemical ionization tandem mass spectrometric method is described for the determination of aflatoxins B₁, B₂, G₁ and G₂ in food with the use of aflatoxin M₁ as an internal standard. The method works well with matrices such as those of figs and peanuts, but there are problems with spices, due to limitations of the clean-up method used. Received: 15 October 1997     

Multiresidue method for pesticides and veterinary drugs in bovine milk using GC/MS and LC/MS/MS

A simple, sensitive and selective method with gas chromatography/mass spectrometry (GC/MS) and liquid chromatography/tandem mass spectrometry (LC/MS/MS) has been developed to detect 342 pesticides and veterinary drugs contaminating bovine milk at the maximum residue limits (MRLs) defined in the "positive list system". Sample preparation was performed by extracting the analytes with acetonitrile, followed by salting-out with sodium chloride. For some pesticides, the extract was further cleaned up by n-hexane partitioning and PSA cartridge column chromatography. GC/MS-EI or -NCI was used to determine pesticide residues, while LC/MS/MS-ESI was applicable to the determination of pesticide and veterinary drug residues. The variation of the recoveries of these drugs at MRL was relatively wide; however the relative standard deviations of the recovery of each drug were within 28%, suggesting that the present method is good enough for use as a screening test for contaminants at the MRLs. These results show that this method is useful for multiresidue analysis of numerous pesticides and veterinary drugs in bovine milk.     

Simultaneous determination of quinolones in foods by LC/MS/MS

A simple method was developed for the simultaneous determination of seven quinolones (enoxacin, ofloxacin, ciprofloxacin, danofloxacin, lomefloxacin, enrofloxacin and sarafloxacin) in foods using liquid chromatography coupled with electrospray ionization tandem mass spectrometry (LC-ESI-MS/MS). The seven quinolones were extracted with acetonitrile containing 0.2% formic acid, and the extracted solution was cleaned up on a C18 cartridge. The extract was diluted with 5 mmol/L IPCC-MS3 for injection into the LC-ESI-MS/MS. The LC separation was carried out on an ODS column with gradient elution of 5 mmol/L IPCC-MS3-acetonitrile as the mobile phase. Mass spectral acquisition was done in the positive ion mode by applying selected reaction monitoring (SRM). The recoveries of the seven quinolones were mostly greater than 60% from foods fortified at 10 ng/g. The detection limits in foods were 2 ng/g for enoxacin and ciprofloxacin, and 1 ng/g for the other drugs. Twenty cattle muscle, 7 swine muscle, 9 chicken muscle, 16 milk, 19 prawn and 20 broiled eel samples from retail markets were analyzed by this method. Enrofloxacin and its metabolite ciprofloxacin were detected in 9 broiled eel at the level of trace (tr)-34 ng/g and tr-10 ng/g, respectively.     

Direct nanoHPLC-ESI-QTOF MS/MS analysis of tryptic caseinophosphopeptides

Caseinophosphopeptides (CPPs) were generated following tryptic hydrolysis of sodium caseinate. Hydrolysate peptides were separated and identified using nano-HPLC ESI-QTOF MS/MS. Sequence coverage in the 3 h hydrolysate was 79.4%, 55.6%, 80.9% and 68.1% for α_s1-, α_s2-, β- and κ-casein (CN), respectively. Variable levels of serine phosphorylation in β-CN f1–25 were observed in the 3 h hydrolysate. Analysis of β-CN f1–25 4P demonstrated that this peptide was stable during the course of hydrolysis. The effect of heat treatment (75 °C, 45 min) at pH 6.0, 7.0 and 8.0 on the peptide profile of the 3 h hydrolysate was studied. Compared to pH 6.0 and 8.0, least modification in phosphopeptide profiles was observed for the hydrolysate sample heated at pH 7.0. Different dephosphorylation and oxidation patterns were also observed following heat treatment at the three pH values. These results demonstrate that heat treatment, in addition to pH, has a major effect on both the phosphorylated and non-phosphorylated peptide profiles of CN hydrolysates.     

液相色谱-电喷雾串联质谱法测定豇豆中的水胺硫磷

建立了豇豆中水胺硫磷的液相色谱-电喷雾串联质谱分析方法。样品经乙腈超声提取后进行液相色-电喷雾串联质谱分析。方法检出限为0.1μg/kg(S/N=3)。空白样本添加水平在0.1、1.0、5.0μg/kg时,平均回收率为80.1~87.9%,相对偏差(n=6)为6.7~8.1%。使用MRM-IDA-EPI的模式,一次进样可得到MRM色谱图及MS2质谱图。该方法具有前处理简单、回收率高、精密度好,选择性强,灵敏度高的优点,符合农药残留的分析要求。     

基于UPLC/Q-TOF MS/MS的花生油成分分析

采用超高效液相色谱-串联四级杆飞行时间质谱(UPLC/Q-TOF MS/MS)联用仪对花生油甲醇提取液分离检测,分析花生油成分,并通过二级质谱图和标准品确定物质。结果表明:正离子模式下检出86种化合物,鉴定30种物质,其中芥酸、棕榈酰胺、硬酯酰胺、油酸酰胺、11Z-二十二碳二烯酸为已知的花生油成分,亚油酰乙醇胺、亚油酰胺、鞘氨醇、N-油酰乙醇胺、十八碳四烯酸、顺-4-癸二酸等26种物质均为首次被检出;在负离子模式下,共检出27种化合物,鉴定15种物质,其中包括花生油中常见的7种脂肪酸,首次检出(Z)-13-氧-9-十八烯酸、蓖麻油酸、烯油酸、13-羟基十八酸和2(R)-羟基海藻酸5种脂肪酸和其他3种物质。     

基于UPLC/Q-TOF MS/MS的芝麻油成分分析

为发现芝麻油中新成分,通过UPLC/Q-TOF MS/MS对4种芝麻油甲醇提取液进行检测分析。结果表明：4种芝麻油中共发现143种共同物质,其中正离子模式71种,负离子模式72种。共同物质中鉴定出77种物质,其余66种为未鉴定成分;77种鉴定成分中包括脂肪酸及衍生物(8种)、芝麻素、芝麻林素、硬脂酰胺等12种已知成分,其余65种为新发现成分;新发现成分包括油酸酰胺、棕榈酰胺、亚油酰胺、芥酸酰胺、8-甲基-N-香草基壬酰胺、辣椒酰胺、N-硬脂酰丙氨酸等17种脂肪酸酰胺,十六碳烯酸、十八碳烯酸等22种脂肪酸及衍生物,5-脱氧基维醇、天孢菌素等5种类黄酮,马泰树脂醇、银杏酸等21种其他成分。芝麻油中含有大量新成分和未知成分,富含的脂肪酸、脂肪酸酰胺、类黄酮、木脂素等物质可解释其独特生理功能。