【简答题】阿胶砷盐检查 取本品2.0g,加氢氧化钙1g,混合,加少量水,搅匀,干燥后先用小火烧灼使炭化,再在500~600°C炽灼使完全灰化,放冷,加盐酸3ml与适量的水使溶解成30ml,分取溶液10ml,加盐酸4ml与水14ml,依法检查(中国药典2005版附录IV F)。如果标准砷溶液(1μgAs/ml)取用量为2ml,求杂质限量。
【简答题】阅读理解。 Hi, everybody! Welcome to our newly-opened Richards Cinema Bookstore! Now let me introduce to you some of the new film books in our store. Are you Chinese film fans? OK, here comes the latest 25...