chemicals-凯发k8官网

22-05-23 目前已知全球有数千种化学品被故意添加入食品包装，但其中只有很少种类的毒性和暴露信息为人们所知晓，绝大多数人们既不认识也不了解其毒性与暴露信息。一份研究报告指出，科学家们已经确定了3000多种可在食品包装和其他食品相关材料中发现的潜在有害化学物质，其中三...

14-08-28 fluorochemicals（含氟化合物） are synthetically produced chemicals, which repel（抵制） water and oil and are persistent towards aggressive physical and chemical conditions in industrial processing. these characteristics have made the fluorochemical...

14-03-11 fresh banana, a waft of flowers, blueberry: the scents in shota atsumi's laboratory in the uc davis department of chemistry are a little sweeter than most. that's because atsumi and his team are engineering bacteria to make esters（酯类） -- molecul...

14-01-18 thousands of chemicals serving a variety of human needs flood into sewage treatment plants once their use life has ended. many belong to a class of chemicals known as cecs (for chemicals of emerging concern), which may pose risks to both human and e...

13-12-30 boston college chemists have developed a new chemical synthesis methodology（方法学） that converts chemicals known as alpha-olefins into new organic compounds. by combining a pair of catalytic reactions in sequence, the researchers converted inexpe...

12-11-23 scientists have discovered an enzyme used in nature to make powerful chemicals from catnip（猫薄荷） to a cancer drug, vinblastine（长春花碱） . the discovery opens up the prospect of producing these chemicals cheaply and efficiently. they are produ...

12-11-21 scientists at imperial college london have developed a system to quickly detect trace amounts（微量） of chemicals like pollutants, explosives or illegal drugs. the new system can pick out a single target molecule from 10,000 trillion water molecule...

11-08-24 baylor university environmental researchers have proposed in a new study a different approach to predict the environmental safety of chemicals by using data from other similar chemicals. for many chemicals in use every day, scientists do not have en...