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polynuclear aromatic hydrocarbons การใช้

ประโยคมือถือ
  • Non-Kekul?polynuclear aromatic hydrocarbons are composed of several fused six-membered rings.
  • About 1 percent are carbon monoxide, nitrogen and sulfur dioxides and traces of carcinogenic furans and polynuclear aromatic hydrocarbons.
  • This created a sludge which contaminated both the underlying soils and the groundwater with creosote and polynuclear aromatic hydrocarbons ( PAHs ).
  • Depending on the nature of the molecule, other species may be formed, such as M + . from polynuclear aromatic hydrocarbons.
  • Sidestream smoke contains 69 known carcinogens, particularly benzopyrene and other polynuclear aromatic hydrocarbons, and radioactive decay products, such as polonium 210.
  • AT & T has also denied reports that the bentonite mud used for drilling has small traces of a toxic chemicals known as polynuclear aromatic hydrocarbons.
  • Site investigations that began in May 1984 found volatile organic compounds ( VOCs ), polynuclear aromatic hydrocarbons ( PNAs ), carcinogenic PNAs, petroleum hydrocarbons, and metals in the source material, soils, and sediments.
  • These polycyclic aromatic hydrocarbons _ previously known as polynuclear aromatic hydrocarbons, or PNAs _ are linked to bladder, esophagus, larynx, lung, mouth, skin and stomach cancers in lab animals and in workers in some occupations.
  • In addition to lead, coal ash typically contains variable but significant concentrations of polynuclear aromatic hydrocarbons ( PAHs; e . g ., benzo ( a ) anthracene, benzo ( b ) fluoranthene, benzo ( k ) fluoranthene, benzo ( a ) pyrene, indeno ( cd ) pyrene, phenanthrene, anthracene, and others ).
  • Areas of environmental concern include : " Intertidal Flats where runoff and effluent have contaminated sediments with PCBs and metals; a Shoreline Fill Area where subsurface soil and groundwater are contaminated with fuel-related and halogenated volatile organic compounds ( VOCs ), polynuclear aromatic hydrocarbons ( PAHs ), and metals; the Plating and Manufacturing Area, where  greenish-blue groundwater pumped from the area has been documented to contain metals including chromium and lead, halogenated VOCs, PAHs, and cyanide; the Building B-2 / North Parking Lot / West Parking Lot area, where subsurface soils comprise ash and cinder fill and contain PAHs and groundwater is contaminated with halogenated VOCs; Building B-65, where chromium-and petroleum-contaminated soils were discovered; the Research and Development Area, where subsurface soil and groundwater contamination is suspected; the South Parking Lot / Chemical Waste Treatment Plant / Closed Lagoons area, where halogenated VOCs and metals have been detected in groundwater; and the Testing Area, where subsurface soils are contaminated with fuel-related and halogenated VOCs and PAHs, and groundwater is contaminated with halogenated VOCs ."