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| 固相萃取气相色谱法测定水中15种硝基苯类化合物 |
| Determination of 15 Kinds of Nitrobenzenes Compounds in Water by SPE/GC |
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| 中文关键词: |
| 英文关键词: |
| 基金项目:国家环保标准制修订计划基金资助项目（903） |
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| 摘要点击次数: 2295 |
| 全文下载次数: 1981 |
| 中文摘要: |
| 使用Oasis HLB固相萃取柱，以正己烷/丙酮混合溶剂（体积比为3∶1）为洗脱溶剂，采用毛细管柱气相色谱电子捕获检测器同时测定水中15种硝基苯类化合物，以保留时间定性，外标标准曲线法定量。硝基苯和硝基甲苯在50.0 μg/L～1 000 μg/L、其他硝基苯类化合物在5.00 μg/L～100 μg/L范围内线性良好，检出限硝基苯和硝基甲苯为0.035 μg/L～0.052 μg/L，其他硝基苯类化合物为0.003 5 μg/L～0.005 6 μg/L，加标水样平行测定的RSD为1.4%～4.0%，平 |
| 英文摘要: |
| The 15 kinds of nitrobenzenes compounds in water was determined by using capillary gas chromatograph /electronic capture detector with Oasis HLB SPE cartridge, elution solvent of hexane/acetone (volume ratio 3∶1). Retention times of the peaks were applied for qualitative analysis. External standard method was used for quantitative analysis. Calibration curves of high correlation were for nitrobenzene and nitrotoluene in a range between 50.0 μg/L and 1 000 μg/L，the other nitrobenzenes compounds in a range between 5.00 μg/L and 100 μg/L. Detection limits were for nitrobenzene and nitrotoluene in a range between 0.035 μg/L and 0.052 μg/L, the other nitrobenzenes compounds in a range between 0.003 5 μg/L and 0.005 6 μg/L. RSD of spiked replicate samples ranged from 1.4% to 4.0%. Average recoveries ranged from 92% to 100%. |
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