杂质

雜質
zázhì
impurity

CEDICT

impurity; foreign substance

Wiktionary

不属于该物质的其他成分

維基詞典

Entry Composition

=1 杂 zá variant of 杂 zá
=1 杂 zá
  1. mixed
  2. miscellaneous
  3. various
  4. to mix
2 质 zhì
  1. character
  2. nature
  3. quality
  4. plain
  5. to pawn
  6. pledge
  7. hostage
  8. to question
  9. Taiwan pr. zhí