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首页> 外文期刊>Environmental Science & Technology >Distribution of Mono to Octa-chlorinated PCDD/Fs in Fly Ash from a Municipal Solid-Waste Incinerator
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Distribution of Mono to Octa-chlorinated PCDD/Fs in Fly Ash from a Municipal Solid-Waste Incinerator

机译：市政固体废物焚化炉中粉煤灰中单价到八氯化氯PCDD / F的分布

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摘要

We have estimated the concentration and distribution of the mono to octa-chlorinated congeners of polychlorinated dibenzo-p-dioxins (PCDD) and dibenzofurans (PCDF) in fly ashes at various sampling points in a large-scale municipal solid waste incinerator at Umea, Sweden, as they cooled from 700 to 170℃. Differences between the ashes were observed, the PCDD homologue profile was found to vary with temperature. The total amount of PCDD and PCDF increased as the temperature decreased in the postcombustion zone. The increase was due to both adsorption to the fly ash and formation of PCDD and PCDF. Mono-totrichlorinated PCDD predominated at high temperatures, whereas hepta- and octachlorinated PCDD predominated at temperatures below 400℃. PCDF predominated over PCDD in the whole temperature range. However, the changes in homologue profile for PCDF were minor. The isomer distribution within the homologue groups was not changed as the temperature decreased in the postcombustion zone.
机译：我们估算了瑞典Umea大型城市固体垃圾焚烧炉中不同采样点的粉煤灰中多氯化二苯并对二恶英（PCDD）和二苯并呋喃（PCDF）的单氯至八氯同类物的浓度和分布从700降到170。观察到骨灰之间的差异，发现PCDD同源物概况随温度变化。随着后燃烧区温度的降低，PCDD和PCDF的总量增加。该增加是由于对粉煤灰的吸附以及PCDD和PCDF的形成。在高温下，单-三氯化物PCDD占主导地位，而在低于400℃的温度中，七氯和八氯化物PCDD占优势。在整个温度范围内，PCDF均优于PCDD。但是，PCDF的同源性谱变化很小。在后燃烧区中，随着温度降低，同系物组内的异构体分布没有改变。

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  • 来源
    《Environmental Science & Technology》 |2008年第4期|1245-1250|共页
  • 作者

    LISA LUNDIN; STELLAN MARKLUND;

  • 作者单位
  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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