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定硫儀電解液配比方案--華維科力

2025-05-20  來自: 華維科力 瀏覽次數(shù):136

三種樣品

1碘化鉀 2 溴化鉀 3冰乙酸 4蒸餾水
1.稱取5克碘化鉀,5克溴化鉀。 2.將5克碘化鉀,5克溴化鉀溶解于于250毫升蒸餾水中。
3.再加入10毫升冰乙酸,攪拌均勻即可。


小提示:電解液可重復(fù)使用,用的時(shí)間長(zhǎng)短根據(jù)重復(fù)使用次數(shù)和試樣含硫量高低而定,但每次做實(shí)驗(yàn)前應(yīng)進(jìn)行1-2次測(cè)定,使電解液中碘-碘離子對(duì)的電極電位校正到儀器的所需數(shù)值,電解液的PH值在1-3時(shí),可以使用,但PH值小于1時(shí),應(yīng)予以廢棄。


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