低浓度磷酸一酯的膜富集和气相色谱测定

Extraction by Membrane Filter and GC Determination for Mono-organic Phosphate at Low Concentration

磷酸一酯（RO）P（O）（OH）2，是一种强权性的有机磷化合物。研究了水体中磷酸一（1-萘）酯的富集和气相色谱的分析，建立了一个简便快速、高灵敏度、实用的分析方法。富集是采用固相萃取方法，选用载有十八烷基硅烷的尼龙滤膜吸附，甲醇洗脱，回收率达72％-78％。它的气相色谱分析选用BSTFA为衍生剂，反应条件为温度65℃，反应时间30min，获得了满意的结果。方法的最低检测限为0．06ng。

Mono-organic phosphate, (RO)P(O)(OH)2, is a strongly polar compound. A simple and sensitive method for determination of 1-naphthyl phosphate in water samples by solid phase extraction and GC determination at low concentration is described in this papre. The organic phosphate was preconcenhated on a Teflon-based membrane filter with bonded octadecylsilane, followed by methanol elution and BSTFA derivatization at 65℃ for 30min in our experimenting work. And the overall recovery for 1-naphthyl phosphate ranged from 72% to 78% in this work.