(来学网)在标准状况下,用活性炭管以0.2L/min的流量采集10min,用1.0m|二硫化碳解吸后,测得苯为20ug/ml,计算得空气中苯的浓度是
  • A.
    (来学网)5mg/m^3
  • B.
    (来学网)8mg/m^3
  • C.
    (来学网)10mg/m^3
  • D.
    (来学网)15mg/m^3
  • E.
    (来学网)20mg/m^3