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光学玻璃中氧化铅、氧化钡的分离、测定方法很多,常用的有H_2S、HAC—NH_4AC和电重量法等。H_2S法须经常接触有毒的H_2S,且时间过长。HAG—NH_4AC法只能适用于低含量的铅钡分离。电重量法需电解仪、铂电极等贵重仪器,同时铅以PbO_2。形成在阳极析出,Pb0_2导电性能差,往往电解不完全。这些方法具有时间长、操作繁、准确度差等缺点。
Optical glass lead oxide, barium oxide separation, determination of many, commonly used H_2S, HAC-NH_4AC and electric weight method. H_2S method should always be exposed to toxic H_2S, and the time is too long. HAG-NH_4AC method can only be applied to the low content of lead-barium separation. Electric weight method to be electrolyzer, platinum electrodes and other valuable equipment, while lead to PbO_2. Formed in the anode precipitation, Pb0_2 poor conductivity, often incomplete electrolysis. These methods have the disadvantages of long time, complicated operation and poor accuracy.