【摘要】 本文介绍了一种简便、快速地测定带鱼肉中有机氯农药666和DDT的气相色谱法。带鱼肉中的脂肪通过有机溶剂正己烷-丙酮提取,随后用浓硫酸把脂类从样品提取液中分离,浓缩定容后注入气相色谱仪测定。本方法对带鱼中666和DDT类化合物的回收率除了PP′-DDD为70.3%外,其余的均在80%以上,相对标准偏差小于10%;且试剂用量少,价格便宜,适于海洋污染调查中大量样品的测定。更多还原

【Abstract】 A simple, rapid GC method is described for the analysis of 666 and DDT residues in fish （Trichiurys haumela）. Fat tissues were extracted by soaking pracedure with hexane-aoetone mixture （V/V=4:1）, then the lipids were separated from the extract of the sample by concentracticn H₂SO₄. The extracted samples were concentracted and injected to GC.The amount of solvent used in this method is samller than that used in sohlet extraction. The method is applicable to more samples.The recoveries of this method for the determination of 666 and DDT residues in fish are all over 80% （70.3% for pp′-DDD）. Their relative standard deviation is below 10%.更多还原