One type of pesticide containing arsenic which had been heavily used in the United States had already been replaced by other pesticides by the 1940s. But in 1952 research institutions discovered that the amount of arsenic in American manufactured paper cigarettes had increased 600 times over, due to the arsenic which was retained in the soil and not easily broken down.
一種被美國農業大量使用過的含砷農藥，四十年代已被其他藥物取代，一九五二年研究單位卻發現，美國菸業製造的紙煙中，砷含量仍增加六百多倍，因為農地嚴重殘存了不易溶解的砷酸鉛。