P76 P76 P76 P76 P76 P76 P76 P76 P76 P76 P76 P76 P76 第四单元阅读材料: Reading Material : Analytical Technique and Methodology P76 P76 P76 P76 P76 第八单元:空气污染物的来源和类型 P76 P76 第八单元 Reading Material : Type and Sources of Air Pollutants [ II J 阅读材料:空气污染物的类型和来源(Ⅱ) What are PCBs
什么是多氯联苯
There are 209 possible chlorinated biphenyls, ranging in physical characteristics
大概有209种氯化联苯,其物理性质不同
The mono-and dichloro biphenyls ( 27323-18-8), ( 25512-42-9) are colorless crystalline compounds that when burned in air give rise to soot and hydrogen chloride
一氯联苯和二氯联苯(27323-18-8),(25512-42-9)是无色晶体的化合物,当它们在空气中燃烧会产生烟尘和氯化氢
The most important products are trichlorobiphenyls,tetrachlorobiphenyls, pentachlorobiphenyls and/ or hexachlorobiphenyls
最重要的产品是三氯化联苯,四 氯联苯,五 氯联苯和/或 六 氯联苯
Chlorinated biphenyls are soluble in ma