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水体中,藻类、菌类等产生嗅味物质,当其浓度为ppt(ng/L)级时,人们就能够感觉到土腥与恶臭味道,严重污染了水体。探索富集、检测低浓度嗅味物质的方法成为困扰其研究的难题。本论文以5种嗅味物质为研究对象。采用固相微萃取(SPME)方法对水样进行前期富集处理,然后利用气相色谱氢离子火焰检测器(FID)对其测定。结果显示5种嗅味物质的峰面积与浓度有较好的线性相关性;精确度较高;检测限低;操作简单省时。本论文利用建立的方法,对我国南方S市四大自来水水厂各个工艺出水取样,进行嗅味物质分析研究。研究结果表明,在各个水厂处理工艺中,均有嗅味物质检出,当原水嗅味物质浓度不是很高的情况下是可以保证水厂出水水质,臭氧-活性炭深度处理可以较好的去除嗅味物质。
Water, algae, fungi and other odor substances, when the concentration of ppt (ng / L) level, people will be able to feel the smell of fishy and foul smells, water pollution. Exploring enrichment and detection of low-concentration olfactory substances has become a problem that plagued its research. In this dissertation, five kinds of odor substances are studied. Water samples were pre-enriched by solid-phase microextraction (SPME) and then detected by gas chromatography hydrogen ion flame detector (FID). The results showed that there was a good linear correlation between peak area and concentration of the five kinds of olfactory substances; the accuracy was high; the detection limit was low; the operation was simple and time-saving. In this paper, we use the established method to sample the effluent from all the four tap water factories in S southern city of our country for the analysis of odor substances. The results show that in all water treatment processes, odor substances are detected, when the raw water odor concentration is not very high, it can ensure the effluent quality of the water plant, and ozone-activated carbon depth treatment can be better removed Olfactive substances.