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| 饮用水源水中丙烯醛测定方法改进 |
| ImprovementofDetectingM ethod for Acrolein in DrinkingW ater Sources |
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| 中文摘要: |
| 对饮用水源水中丙烯醛的气相色谱标准测定方法作了改进, 由直接进样改为 吹扫捕集进样 , 由极性色谱柱改为中等极性色谱柱。 方法在 0.010 m g/L~ 0.100 m g/L 范围内线性良好 , 最低检出限和检测 下限分别为 0. 000 5 m g/L 和 0.002 mg/L, 水样平行测定的 RSD 为 2.8% ~ 5.2%, 平均加标回收率为90.0% ~ 100%, 各项技术参数与EPA 8030A方法接近。 改进后的方法解决了直接进样检测下限高于标准 , 以及纯丙烯醛标准物质不稳定、难于购买两大难题 , 能满足饮用水源水的监测要求。 |
| 英文摘要: |
| There had been some improvements forstandard method to detectacrolein in drinking water sources. Sampling mode had been changed from directinjection intothe purge and trap. GC column wasre placed from polarity to m edium polarity. Resultsshowed thatgood linearity ofmethod obtained in range from 0.010mg/L to 0.100 mg/L, lowerlimitofdetection 0.000 5 mg/L, detection limits0.002 mg/L, RSDsof parallelsamplesbetween 2.8% and5.2% , averagespikedrecoveriesbetween 90.0% and100%. Eachtechni calparam etersapproachedthatofEPA method8030A. Some difficultproblemshad beensolvedthatpoordetec tionlimitsfrom directinjection could notreachstandard requirem ents, and unstablepureacroleinstandardm ate ria,l aswellasdifficulttogetthestandardm aterialin marke.t Theimprovedm ethod metthe need fordrinking watersourcesmonitoring. |
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