美国鸡肉含砷量 0.5 ppb.
1 ppb = 0.001 微克/公斤
http://www.nytimes.com/2013/05/11/health/study-finds-an-increase-in-arsenic-levels-in-chicken.html?_r=0
1 ppb = 0.001 微克/公斤
http://www.nytimes.com/2013/05/11/health/study-finds-an-increase-in-arsenic-levels-in-chicken.html?_r=0