Ac cording to US statistics, there are currently more than 20,000 kinds of chemicals in common use, of which nearly 6,000 are being tested for or have been proven to be health hazards.
根據環保署的統計，目前國內普遍被使用的化學物質有二萬多種，其中接近六千種在實驗室或臨床上已證實對人有致病性。