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应用极谱法测定金属锡中铅的含量,由于大量锡的存在,严重干扰铅的测定,因此须将锡分离除去.在我们采用的金属锡中铅的极谱测定方法中,预先以盐酸-溴氢酸将锡挥发排除,然后再于盐酸一柠檬酸铵溶液中进行测定.根据云锡一冶化验室的建议,我们进行了锡样不分离锡、直接以极谱法测铅的试验.拟订了在
Polarographic determination of lead in metallic tin content, due to the presence of a large number of tin, seriously interfering with the determination of lead, so the tin separation and removal of tin in our adoption of tin in the determination of lead in polarography, pre-hydrochloric acid - Hydrogen bromide broth was used to remove the volatilization of tin and then to the solution of ammonium citrate in hydrochloric acid.According to the suggestion of YUNYI METALLURGICAL LABORATORY, we carried out the test of direct measurement of lead by polarographic method without separation of tin. Drafted in