CAJ | 학술논문

建立固相微萃取( SPME)-气相色谱法( GC-ECD)分析环境水样中痕量硝基氯苯类化合物的方法。选用65μm PDMS-DVB萃取纤维,磁力搅拌速度为200 r/min,萃取温度为60℃时,对水中硝基氯苯类物质萃取富集50 min,直接注入GC进样口,在250℃温度下解吸2.0 min后分析测定。优化条件下,方法线性良好,检出限为0.2~0.4 ng/L,加标水平为0.0005、0.005、0.05μg/L时,回收率为56.02％~136.38％,RSD(n＝7)为9.34％~28.33％。用该方法对实际水样进行实验,结果良好,能够满足环境水样中痕量硝基氯苯类化合物的测定。
건립고상미췌취( SPME)-기상색보법( GC-ECD)분석배경수양중흔량초기록분류화합물적방법。선용65μm PDMS-DVB췌취섬유,자력교반속도위200 r/min,췌취온도위60℃시,대수중초기록분류물질췌취부집50 min,직접주입GC진양구,재250℃온도하해흡2.0 min후분석측정。우화조건하,방법선성량호,검출한위0.2~0.4 ng/L,가표수평위0.0005、0.005、0.05μg/L시,회수솔위56.02％~136.38％,RSD(n＝7)위9.34％~28.33％。용해방법대실제수양진행실험,결과량호,능구만족배경수양중흔량초기록분류화합물적측정。
A simple method based on solid-phase micro-extraction ( SPME) coupled with Gas Chromatography-Electron Capture Detector ( GC-ECD) was developed for the determination of trace amounts of nitrochlorobenzenes in environment water samples. In this method,the extraction was carried out at 60℃ for 50 minutes using 65μm PDMS-DVB fiber with a constant stirring speed of 200 r/min. The fiber was introduced into the GC injector port and the extract was desorbed at 250℃ for 2. 0 min. Under the optimized conditions,14 nitrochlorobenzenes can be extracted completely and separated well. The limits of detection were from 0. 2 ng/L to 0. 4 ng/L. The spiked (0. 000 5,0. 005,0. 05 μg/L) recoveries were in the range of 56. 02%-136. 38% and the relative standard deviations (RSD,n=7) were between 9. 34% and 28. 33%. The method is applied to the actual water samples and gained satisfactory results.