海水中铬的测定,前人已做了大量工作,大多是采用火焰原子吸收法或比色法测定总铬.也有采用中子活化法或极谱催化波方法测定海水中的铬含量,但这些方法,试样的预处理都十分烦琐,或需要昂贵仪器设备,且方法误差也较大.我们根据痕量Cr(Ⅲ)离子对鲁米诺—过氧化氢在碱性介质中会发出具有一定波长的光,且 Determination of chromium in seawater, the predecessor has done a lot of work, mostly by flame atomic absorption spectrometry or colorimetric determination of total chromium, but also by neutron activation method or polarographic catalytic wave method for determination of chromium in seawater, but these Method, sample pretreatment are very cumbersome, or require expensive equipment, and the method error is larger.We based on trace amount of Cr (Ⅲ) ions on the luminol - hydrogen peroxide will be issued in alkaline medium has a certain Wavelength light, and