2017/07/07 09:28
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产品配置单:
全新一代实验室气相色谱仪GC6891N
型号: GC 6891N
产地: 湖南
品牌: 南京科捷
¥10万 - 15万
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方案详情:
为甲基异莰醇、土臭素、β-环柠檬醛和β-紫罗兰酮均为水体中藻类产生的溴味代谢产物,由于常规水处理工艺很难有效去除这些溴味,所以易造成供水事故。因此快速、有效地检测水中的溴味物质非常重要。
目前,溴味物质的检测方法主要有色谱法,常用的样品预处理方法有液液萃取、固相萃取和固相微萃取等。这些样品预处理方法各有优缺点:液液萃取操作简单,但消耗有机溶剂较多且重现性较差;固相萃取过程中不会产生乳化现象,但操作过程费时并且萃取柱容易堵塞;固相微萃取无需有机溶剂和氮吹浓缩,但其萃取范围较窄,萃取纤维头价格昂贵、易碎、使用寿命短。
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