天梯中国从稀土矿渣提取抗癌核素铅-212有望打破全球供应瓶颈_我的网站
A | Drones zip across city blocks, delivering meals to doorsteps. On factory floors, humanoid robots are put to the test. Streets buzz with electric vehicles, and artificial intelligence (AI) is woven ever deeper into manufacturing, healthcare and urban services. When China hosts the 33rd APEC Economic Leaders' Meeting in Shenzhen this November, delegates will gather in a city that has become one of the country's leading centers for emerging industries. It will be China's third time hosting the event, following Shanghai in 2001 and Beijing in 2014. Adjacent to Hong Kong, Shenzhen in Guangdong Province was one of China's first special economic zones and has evolved over the past four decades into a global hub for innovation and advanced manufacturing. It is home to tech heavyweights such as Huawei, Tencent, BYD, DJI, and UBTECH, along with a vibrant community of startups spanning sectors from AI to new energy. In the first half of 2026, the city's trade with other APEC economies rose 33 percent to 1.98 trillion yuan (about 291.6 billion U.S. dollars), accounting for 68.8 percent of its total foreign trade. Today, Shenzhen offers a window into China's new growth drivers and their potential to create new opportunities across the Asia-Pacific region. LOW-ALTITUDE ECONOMY Official data show that around 70 percent of China's consumer drones and half of its industrial drones are produced in Shenzhen, home to leading manufacturers including DJI. Shenzhen is also a testing ground for commercial drone applications, from logistics and emergency response to power-grid inspection. Food-delivery giant Meituan opened its first drone-delivery route to customers in Shenzhen years ago. By the end of June 2026, its drones were delivering orders from over 1,500 merchants, including KFC, McDonald's and Chinese tea chain Chagee. To support the industry's growth, Shenzhen has built more than 1,200 low-altitude takeoff and landing facilities and opened 310 logistics routes. Cargo drones completed more than 1 million flights in 2025, up 29 percent from a year earlier. Shenzhen has also led the way in regulation. In 2019, it became the first city in China to introduce local legislation specifically for the management of civilian light and micro drones. NEW ENERGY VEHICLES Shenzhen has emerged as one of China's leading hubs for new energy vehicles (NEVs), backed by strong innovation capabilities and one of the country's most complete industrial ecosystems spanning lithium battery materials, energy storage integration and end-use applications. One of the best-known companies benefiting from this ecosystem is BYD, headquartered in Shenzhen. The automaker sold around 2.26 million electric vehicles (EVs) in 2025, surpassing Tesla in global EV sales last year. Its NEVs are now available in 119 countries and regions. The city is also home to more than 1,400 intelligent-driving companies. Shenzhen is investing heavily in charging infrastructure. In 2023, it launched a drive to become a "city of superchargers," and by 2024, supercharging facilities outnumbered conventional petrol stations. So far, it has built more than 1,200 ultra-fast charging stations with charging power of 480 kilowatts or above. ROBOTS AND AI Last year, a robot 6S store, claimed to be the world's first of its kind, opened in Shenzhen and quickly became a local sensation. Shenzhen has fostered a new generation of robotics companies, including UBTECH, Honor and Leju Robot. By the end of 2025, the city was home to 34 listed robotics companies and nine unicorns. The sector expanded rapidly last year. Humanoid robot production surged 83.1 percent year on year to 343,400 units, while the total robotics industrial output value in the city exceeded 240 billion yuan, up over 20 percent year on year. Shenzhen has more than 2,600 major AI companies, with an industry spanning AI chips, algorithm frameworks and foundation models as well as software and hardware applications. AI-enabled smartphones, translation earbuds, smart glasses and smart toys made in Shenzhen are increasingly reaching both domestic and overseas markets.
B | 若每年处理50吨镭渣，可制备365居里铅-212，可供约24000名癌症患者使用。团队同时能从镭渣中直接分离提取钍-228，其半衰期为1.9年，经衰变生成铅-212，适合远距离输送，可为国内外铅-212核药制备提供充足原料保障。
C | 目前该技术正在开展中试研发，计划2至3年后实现大批量制备，产能逐渐扩大至每日1居里以上。
D | “结合中国丰富的稀土矿渣资源，可构建不受任何外部供应制约的制备网络。”韦悦周说。(完) 【编辑:万纪玮】。 Current article:http://www.zhouangnaoguangsundianzhenmou.cfd/kyd7008/bzf6c.html Published on:08:26:33 |
。 中新网衡阳8月21日电 (夏亦可)南华大学核科学技术学院韦悦周教授团队从稀土矿渣中直接分离获得高纯度阿尔法核素铅-212及其前体核素钍-228，成功实现单批次从公斤级稀土矿渣中分离提取158微居里的铅-212/铋-212。该成果近日通过中国同位素与辐射行业协会组织的科技成果鉴定，认为项目总体技术达到国际先进水平，其中单次回收率达到国际领先水平。
韦悦周教授(左二)在带领团队成员做实验。南华大学供图
铅-212半衰期为10.6小时，是目前全球最具应用前景的靶向阿尔法治疗核素之一，可用于乳腺癌、胰腺癌、前列腺癌等多种恶性肿瘤的精准治疗。但目前铅-212提取工艺复杂、产量低、价格高，相关靶向药物难以推广应用，中国医用核素主要依赖进口。
研究团队独辟蹊径，向独居石加工镭渣溶解液中引入特殊阴离子，使铅-212形成“阴离子络合物”，再利用自主研发的多孔二氧化硅负载型阴离子交换树脂，将其从含20多种金属杂质的溶液中精准“识别”并“抓取”出来。这项技术将富含放射性镭的废渣“化害为利、变废为宝”，有望打破全球医用阿尔法核素供应短缺困局。
经检测，提取的铅-212产品核素纯度高达99.9%，单次回收率高于90%，钍-228单次回收率达到85%以上，工艺具备向中试放大推进的条件。围绕该技术已形成自主知识产权，申请发明专利6项，发表SCI论文10篇。
团队研究显示，仅约10吨镭渣即可提取1居里的铅-212，理论上可供66名癌症患者治疗使用。镭渣料液放置衰变约4天后可再次提取，循环利用多次。
