摘要
研制了一种开环捕集装置（ＯＬＳＡ），以富集水中的异味化合物并用毛细管ＧＣ三内标法定量。该装置以纯化空气为吹脱气体，玻璃管道为加热气路。吸附小，背景低。并对活性碳富集小管、萃取技术以及水样中离子强度等作了深入的研究。结果表明：方法的检出限为１．５ｎｇ／Ｌ。样品添加回收率（ｎ＝１１）为９９．８％～１１５％，精密度为４．８％～１１．６％（±Ｓ．Ｄ．％）。
A home made open loop stripping analysis (OLSA) system was developed for determining five earthy musty compounds in water by gas chromatography. The purified air was used as stripping gas, and the glass tube as heating line, which reduce greatly the background level and adsorption during the analysis. In addition, activated carbon filter, extraction mode and inorganic ionconc entration in water were compared and optimized. The results showed that the detection limits for these five odorants were low to 1.5ng/L, the mean recoveries and the precision ranged from 99.8%～115% and 4.8%～11.6% (±S.D.%) respectively.
出处
《分析测试技术与仪器》
CAS
1998年第2期84-90,共7页
Analysis and Testing Technology and Instruments
基金
中国科学院水生生物研究所淡水生态与生物技术国家重点实验室基金
