遭男同事投毒一年多 华人女子身体被毁 嫌犯轻判 父亲去世

一名华裔女工程师袁蓉（Rong Yuan，音译），在办公室里被同事持续投毒一年多，最终嫌犯David Xu（徐某）仅被判2年缓刑，还有进一步动作。

她实在忍不了，做出了自己的最后抗争！10月10日首次公开了自己当年拍到的被下药的视频。

"这个法律体系已经辜负了我......这是我最后的手段。

‼️ California metallurgist David Xu, who pleaded no contest to poisoning a colleague Rong Yuan, is seeking to have his felony conviction dismissed, years after hidden-camera footage exposed him contaminating her water bottle with toxic heavy metal cadmium ‼️ David Xu, a metallurgist at Berkeley Engineering and Research, spiked his colleague Rong Yuan’s food and water with cadmium — a toxic heavy metal — for nearly 18 months between 2017 and 2019. As Yuan suffered debilitating symptoms, hospital visits and fear of a terminal illness, Xu maintained a deceitful facade, even suggesting her illness was caused by “mold” in the office. His poisoning campaign only unraveled in early 2019 when Yuan set up a hidden camera at her desk, capturing Xu in the act of tampering with her water bottle. The video evidence led to Xu’s arrest in Mar 2019 on charges of attempted murder and poisoning, which also affected Yuan’s parents, who had inadvertently consumed the poisoned water. Xu faced up to life in state prison. After his arrest, Xu was released on $2 million bail. He then received repeated modifications to his home confinement, with his travel restrictions eventually fully lifted, A judge set bail at $2 million, and Xu was released on GPS monitoring. In April, Attorney General Xavier Becerra filed a motion on behalf of the state engineering board, calling Xu “a highly trained and unusually sophisticated criminal defendant” who “used a number of chemicals in his work.” A judge agreed with the AG’s order and barred Xu from practicing under his state engineering licenses during the case. In the ensuing months, the court granted Xu more and more leniency. By July, he was allowed 6 hours out of the house each week to take his daughter to ballet and gymnastics classes. In Oct, he received 6 more hours out of the house on Sundays. In June 2021, he was granted “an additional day with kids.” By Sep, he was allowed an additional 2 hours every day of the week. In Nov, his request to end house arrest was granted. By Apr 2022, he was allowed to travel within the U.S. In Sep 2023, Xu pleaded no contest to a single count of poisoning under a deal offered by prosecutors under Alameda County district attorney Pamela Price, with one year of felony probation and one day of credit for time served. A no-contest plea carries the same weight as a conviction but is not an admission of the underlying facts. Yuan had sought nearly $500,000 in restitution. A judge ordered her paid $7,058, citing a report Xu’s attorney had submitted by a toxicologist who concluded that cadmium poisoning would not cause long-term health effects. Xu finished his two years of probation in March. On Oct 12, he will ask an Alameda County judge to dismiss his felony conviction — a process commonly referred to as “expungement.” Under state law, a person who completes every condition of probation is entitled to expungement, and California appeals courts have held that judges cannot deny those petitions unless the crime is on a short list of exclusions — poisoning not being one of them. A dismissal would not erase the case; Xu’s record would still show an arrest and conviction to law enforcement, and the conviction could be used against him if he is charged with a new crime. He would also have to disclose it on applications for state licenses. https://t.co/ClbbvQfF9E https://t.co/IKw9xxm9z2 https://t.co/5tJ8gk84Ae

— Byron Wan (@Byron_Wan) October 12, 2026

袁蓉与徐某的履历高度相似：两人都是冶金与材料科学领域的博士，先后师从加州大学伯克利分校材料科学教授Robert Ritchie。

2017年1月，袁蓉入职伯克利工程与研究公司（Berkeley Engineering and Research）。

两人的第一次接触就不太愉快。徐某告诉她，她不能使用公司的材料表征实验室。

袁蓉觉得莫名其妙——那恰恰是她的专业领域，她不仅会操作那些仪器，还修过。

但她没有争执，只是决定尽量避免与对方产生工作交集。

入职几周后，她的身体开始出现异常：先是干呕、脱发，随后症状逐步加重。

2017年7月的一个清晨，她喝了几口水瓶里的水，突然出现剧烈反应，最后是邻居把她送进医院。

同年10月，类似情况又发生两次。

检察官后来认定，投毒大约从2017年10月开始。

此后两年，她辗转于多个专科，做过各类检查，一度怀疑自己患上胃癌，但胃镜未见异常。

她甚至专程飞回中国求医。

到2018年底，她已多次住院，连正常上班都难以维持。

担心女儿得了绝症，她的父母从国内赶来照顾。

而徐某还始终在办公室里表现得十分体贴。

2018年11月27日，袁蓉因严重呕吐请假，他回复说：你应该在家办公，身体好了再说，不必急着来公司。

他还提出一种解释——办公室可能有霉菌问题。

转折出现在2019年1月。

那天袁蓉喝了桌上水瓶里的水，熟悉的濒死感再次袭来。

当晚，她母亲也喝了同一瓶水，说味道发酸。

袁蓉开始意识到，问题出在水里。

她在网上买了一台小型隐蔽摄像头，于2019年2月11日固定在办公桌旁的墙上。

当天上午11时04分，镜头拍到徐某出现在她的办公桌前，手伸向放水瓶的位置——但水瓶未完全进入画面，无法判定他做了什么。

真正完整的画面出现在3月4日：徐某走到桌前，从一个白色小容器中向水瓶倒入某种物质；

约三十秒后折返，转动了一下水瓶，随即离开。

"当时我浑身血液就像凝固了一般，"袁蓉回忆第一次看到这段影像时的感受，"我差点就没命了。"

负责此案的伯克利警局警探Jennifer Wilson后来表示，如果不是袁蓉自己拿到了证据，恐怕没有人会相信职场上会发生这种事。

检方调查认定，2017年至2019年间，徐某在一年多时间里多次向袁蓉的食物和饮水中投放镉。

镉是一种有毒重金属，长期或大量摄入可损害肾脏与骨骼，并被认定具有致癌性。

从袁蓉水瓶中采集的样本检测显示，镉含量最高达到美国联邦饮用水限值的350万倍。

受害的不止她一人。警方发现她父母血液中的镉同样超标，原因是她母亲做饭时用过女儿水瓶里的水。

2019年3月，徐某被捕。

当月28日，阿拉米达县地检办公室以预谋谋杀未遂及两项重罪投毒罪提起指控。

依照最初的指控，徐某最高可能面临终身监禁。实际结果与此相去甚远。

2023年，主张减少监禁的Pamela Price出任阿拉米达县地方检察官。

随后检方与辩方达成认罪协议：谋杀未遂等指控撤销，徐某仅就一项重罪投毒罪作出不抗辩答辩。

2023年9月，他正式认罪。

2024年3月量刑时，连承办法官Kimberly Colwell都认为这份协议过于宽大，当庭将缓刑期由一年延长至两年，并警告他"永远不要再碰任何毒物"。

他实际折抵的监禁时间仅为一天。

同年11月，Pamela Price被选民罢免，其任内若干被批过于宽纵的认罪协议，正是争议焦点之一。

袁蓉至今未能恢复，无法从事全职工作。

她曾向法院主张近50万美元赔偿。

但法院在裁定金额时采信了辩方提交的一份毒理学专家报告，认为镉中毒不会造成长期健康影响，最终获判7058美元。

袁蓉对这一结论强烈质疑。她也考虑过另行提起民事诉讼，但衡量诉讼成本与执行难度后放弃。

后来，她发表论文，记录自己和父母遭受镉暴露后的长期健康情况，并把论文献给已经去世的父亲。

在她看来，这场投毒案改变的不只是自己的生活，而是整个家庭。

2026年3月，徐某完成两年缓刑，随即依据加州法律申请撤销重罪定罪。

这一程序通常被称为expungement。虽然犯罪记录不会被彻底抹除，但在普通雇主的背景调查中，这段历史将难以被发现。

地检办公室已对该申请提出异议。但依据加州相关法律，只要当事人履行了缓刑期间的全部条件，法官在多数情形下必须批准。

依照加州保护受害人权利的《Marsy’s Law》，袁蓉有权在听证会上陈述意见。

听证会定于当地时间10月12日上午9时，她将亲自出席。

公开当年的监控画面，是她在法律程序之外所能做的最后一件事。

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