论文部分内容阅读
土霉味是国内外饮用水处理中最常见的问题之一,它通常与微生物活动有关。虽然土霉味化合物的浓度非常低(ng/L),但仍然达到了人类的感知阈值。因此为了检测这些低浓度的土霉味化合物就必须采用高灵敏度、高选择性的方法进行富集处理。本文综述了吸附微萃取、液相微萃取等微萃取技术在水中土霉味化合物检测的研究进展,为提高水中土霉味化合物检测提供借鉴。微萃取效率主要受萃取纤维的种类、萃取模式、添加无机盐的浓度、萃取温度和萃取时间等因素的影响。微萃取是最近发展起来的一种新型样品前处理技术,该方法操作简单、成本低、富集效率高、所需有机溶剂用量极少,是一种环境友好的萃取新技术,可与气相色谱、液相色谱等仪器联用。
Moldy soil is one of the most common problems in drinking water treatment at home and abroad, and it is usually related to microbial activities. Although the concentration of soil-mold compounds is very low (ng / L), it still reaches the human perception threshold. Therefore, in order to detect these low concentration of moldy compounds must be high sensitivity, high selectivity enrichment. This review summarizes the progress in detection of soil and musty compounds in water by microextraction, such as adsorption microextraction and liquid phase microextraction, and provides references for the detection of soil and musty compounds in water. Microextraction efficiency is mainly affected by the type of extraction fiber, extraction mode, the concentration of added inorganic salts, extraction temperature and extraction time and other factors. Microextraction is a new type of sample pretreatment technology developed recently. It is a new environment-friendly extraction technology with simple operation, low cost, high enrichment efficiency and minimal amount of organic solvent. It can be used with gas chromatography , Liquid chromatography and other equipment used in conjunction.