摘要
采用固相萃取与气相色谱-质谱联用测定水中痕量多环芳烃(PAHs)。通过正交试验,得到最佳固相萃取条件为:上样流速为5mL/min、采用二氯甲烷洗脱、洗脱剂用量为3mL、洗脱流速为2mL/min。测定结果显示,固相萃取与气相色谱—质谱联用技术对萘、菲、荧蒽3种PAHs的检出限为0.03~0.07μg/L,加标回收率为70%~100%,相对标准偏差为3.90%~9.58%。该方法精密度高、准确度好,能满足实际水样中痕量PAHs的测定要求。
Gas chromatography mass spectrometry (GC/MS) with solid phase extraction was adopted to determine trace polycyclic aromatic hydrocarbons in water. The optimal conditions for polycyclic aromatic hydrocarbons (PAHs) solid phase extraction (SPE) were obtained by orthogonal experiment. Employing the best extraction condi tions (sampling flow rate of 5 mL/min; 3 mL dichloromethane for elution volume; elution flow rate of 2 mL/min), linear calibration equations were established for 3 PAHs (naphthalene, phenanthrene, fluoranthene) in the range of 0.01-10.00 mg/L with correlation coefficients of 0. 997 4-0. 999 2. The detection limits for the 3 PAHs ranged from 0. 03-0. 07 μg/L. Applying the method to determine contaminated water samples, the recovery efficiencies were in a range of 70%-100% with the relative standard deviations ranged 3.90%-9.58%.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2010年第4期25-27,共3页
Environmental Pollution & Control
基金
科技部水体污染控制与治理科技重大专项(No.2008ZX07012-002-005)
陕西省自然科学基金资助项目(No.SJ08-ZT07)
西部建筑科技国家重点实验室(筹)开放基金资助项目(No.08KF07)
关键词
多环芳烃
固相萃取
气相色谱-质谱
痕量
polycyclic aromatic hydrocarbons (PAHs)
solid phase extraction (SPE)
gas chromatography mass spectrometry (GC/MS)
trace