| 液上空间气相色谱法测定水中硝基氯苯 |
| 摘要点击 678 全文点击 730 投稿时间：1989-09-13 |
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| 中文关键词 水 硝基氯苯 液上空间气相色谱 |
| 英文关键词 nitrochlorobenzene headspace-GC |
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| 中文摘要 |
| 本文建立了水中(邻、间、对)硝基氯苯类有机化合物的液上空间气相色谱测定方法。本方法的特点是:操作简便、分析快速、灵敏、干扰少,适用范围广。在气液体积比为1:2,平衡温度为40℃,液上气体总压力为1.3atm的气液相平衡条件下,硝基氯苯异构体的最低检出浓度均低于1.0μg/L(进1ml液上气体),检测上限浓度可达14mg/L(进5μl液上气体),变异系数小于5.6%,可用于各种环境水体中硝基氯苯类有机化合物的测定。 |
| 英文摘要 |
| This paper first reports the development of Head-GC method in determination of nitrochlorabenzenes, the boiling points of which range between 235℃ and 245℃. The method is simple and quick in operation, and also can totally avoid the interference of high-boiling-point compounds such as BHC, DDT and troubles of emulsifi-cation of extractive involved in extraction procedure. It has less harm and risk to human body and the environment. Wide Linear range (from 1μg/L to 14 mg/L) can be easily obtained just by varying the headspace sampling volume (from 5 μL to 1 mL). The minimum detection limits for (o-, m- & p-) nitrochlorobenzenes could atlain below 0.1 μg/L, The relative standard deviation is less than 5.6 percent. |
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