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对珠江三角洲4个不同地方的养殖池塘中水样,泥样和不同种类的鱼样分析,结果表明水产养殖中多氯联苯的分布和归趋在不同分配相中有很大差别,水相中含量较低(8.0～2 4 .0 3ng·L- 1 ) ,沉积相中较高(7.32～36 .2 3ng·g- 1 ,干重) ,特别是工业活动频繁的地方,而乡村相对较低。鱼类不同食性对多氯联苯的积累及其同分异构体的分布有很大影响,肉食性鱼类比草食性鱼类积累更多的多氯联苯.其中代表性同分异构体有IUPAC 118,138,81/ 87,15 3,180 ,5 2 ,4 9,99,4 4。珠江三角洲水产养殖中多氯联苯对生态环境的影响相对较低。
The analysis of water samples, mud samples and different kinds of fish samples from aquaculture ponds in 4 different places in the Pearl River Delta showed that the distribution and fate of PCBs in aquaculture varied widely among different phases. The water phase (8.0-2.23ng · L-1) and higher sedimentary facies (7.32-36.23ng · g-1, dry weight), especially in areas with a high degree of industrial activity, whereas in rural areas relative Lower. The different feeding habits of fish have a great impact on the accumulation of PCBs and the distribution of their isomers. Carnivorous fish accumulate more PCBs than herbivorous fish, of which the representative isoforms The body has IUPAC 118,138,81 / 87,153,180,542,499,94,4. PCBs in aquaculture in the Pearl River Delta have a relatively low impact on the environment.