1994年怀疑被人蓄意投毒的清华大学校友朱令上周五在北京去世，终年50岁。请看本报昨日的报道：

Zhu Ling, the victim of an unsolved thallium poisoning case in 1994 that left her permanently disabled, passed away Friday, Tsinghua University said on its Weibo post Saturday.

Zhu’s death was also confirmed by her father Wu Chengzhi to the news outlet Southern Metropolis Daily, the paper reported Saturday.

Zhu, who majored in chemistry at the prestigious Tsinghua University, started to experience stomach pain, hair loss and other strange and debilitating symptoms in late 1994. She sunk into a coma four months later.

报道中的thallium poisoning就是“铊中毒”，铊是一种无色无味、能快速完全吸收、对人致死剂量为每千克体重10-15毫克的化学元素。