(来学网)双硫腙比色法测定食品中铅的适合酸度是
  • A.
    (来学网)pH8.5~9.0
  • B.
    (来学网)pH2.5~4.0
  • C.
    (来学网)pH4.0~5.0
  • D.
    (来学网)pH5.0~6.5
  • E.
    (来学网)pH7.0~8.5