CONCLUSION: Crude realgar could induce significant liver oxidative injury, which could be reduced by purified realgar. Soluble arsenic salt may be major toxic ingredient.

结论天然雄黄可导致小鼠肝损伤，酸化精制后对肝脏毒性显著降低，雄黄毒性成分可能为可溶性砷盐。

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In polluted urban areas, they also enhance production of ozone, a key ingredient of smog that is potentially toxic to animal and plant life.

在受污染的市区，他们还促进臭氧的产生，臭氧是对动物和植物生命有潜在毒性的烟雾的关键成分。

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FDA preliminary testing on product samples also revealed a compound that appears to be diethylene glycol (DEG), an ingredient used in antifreeze, which may be toxic if ingested.

美国FDA对产品样本初步检测还发现了一种化合物，似乎是二甘醇(DEG)，是防冻液的成分，如果摄入可能有毒。

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Federal officials have also issued recent warnings about lead paint in toy trains, defective tires and toothpaste made with diethylene glycol, a toxic ingredient commonly found in antifreeze.

NPR: Chinese Seafood on List of Questionable Products

Last month, the Canadian government moved to list triclosan an antibacterial ingredient commonly found in toothpaste as a toxic under the Canadian Environmental Protection Act, which could result in an outright ban on the antibacterial agent in personal care products, affecting U.S. companies that sell such products north of the border.

FORBES: How International Regulations Are Changing American Supply Chains