A | (ECNS) -- Chinese researchers have developed a method that can directly and precisely detect trace rare-earth impurities in high-purity rare-earth materials, overcoming a long-standing challenge caused by matrix interference, CCTV News reported Monday. The breakthrough, led by a key laboratory under the State Administration for Market Regulation at Jiangxi University of Science and Technology, uses inductively coupled plasma tandem mass spectrometry (ICP-MS/MS). The technique eliminates the need for matrix separation, offering higher sensitivity, accuracy and faster testing. The team has also made advances in sample pretreatment and instrument calibration. The technologies are already widely used by rare-earth producers and testing institutions to improve quality control and testing efficiency. 
。 BROOKHAVEN, Miss. -- Federal and state law enforcement agencies are investigating a shooting near the Mississippi home of U.S. Sen. Cindy Hyde-Smith, state investigators announced Monday.No one was injured in the shooting Sunday afternoon near Hyde-Smith’s Lincoln County home in south Mississippi, investigators said in a news release. The Mississippi Bureau of Investigation is working with federal and local law enforcement agencies to investigate the shooting. Investigators did not reveal whether the home was struck by bullets, what type of firearm was used, or whether they have identified a suspect, citing the ongoing investigation. Hyde-Smith has represented Mississippi in the U.S. Senate since 2018. “The Senator and her family were not harmed," Hyde-Smith’s office said in a statement Monday. "Senator Hyde-Smith is grateful for the concern shown by many and the good work of federal, state, and local law enforcement.”。
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