2楼: Originally posted by qfw_68 at 2014-03-28 11:56:36
参见第2页：重铬酸钾法
https://wenku.baidu.com/link?url=EngVEPzp49CAhVEGbzO-Nd0rdNrmEYpSYairPWf3H1Ao-4zG4FM3cy9AcGdW0N-82KrXJiJbrd7Fy9JdZq_eP9FGHJz59_crVDximplUqSa