Abstract
The concentration of Li, Mn, Ni, Co, Fe in Japanese rivers those are used to the lithium ion battery(LIB), nickel metal hydride battery(NiMHB）etc. were determined using ICP-MS and ICP-AES. Fifty five samples were collected around the LIB and NiMHB factory etc. from Miyagi prefecture to Tottori prefecture. Because the concentration of Mn and Fe was high, we measured them by ICP-AES and determined other elements by ICP-MS. Because 58Ni was interfered by 58Fe, 60Ni was used for the measurement. In the three samples among 55 samples, three or more elements of Li, Mn, Ni and Co showed more than 5 times the concentration of river in Japan. In 14 samples, 2 elements of Li, Mn, Ni and Co showed more than 5 times the average value of the river in Japan. Since the use of LIB and NiMHB will increase here after, it will be important to pay attention to the concentrations of these elements in river waters.
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