铂金甘埚说明书
The operation instruction of platinum crucible
以下资料根据中科院贵金属实验器材供应商“捷昱电子"提供。有需更详细资料请搜索“捷昱电子"咨询索取索取。
1、 铂是一种贵重金属，熔点约为1770度，质软，使用时不要用手捏，以防变形。也不能用玻璃棒捣刮铂坩埚内壁，以防损伤。也不要将红热的铂坩埚放人冷水中骤冷。
Platinum is a precious metal， melting point is about 1770 degrees， soft， do not use the hand to prevent deformation.Also can not use the glass rod to scratch platinum crucible inner wall， to prevent damage.Also do not put the redhot platinum crucible in coldwater cold.
2、 铂坩埚的加热和灼烧，均应在垫有石棉板或陶瓷板的电炉或电热板上进行，或在煤气灯的氧化焰上进行，不能与电炉丝、铁板及还原焰接触，因为在高温下铁易与铂形成合金，还原性气体能与铂形成碳化铂，使铂埚变脆。滤纸如在铂坩埚中灼烷，应在低温和空气充足的情况下，让炭化的滤纸完全燃烧后，才能提高温度。
The heating and burning of platinum crucible shall be carried out on an electric furnace or electric heating board with a stone or ceramic plate， or on the oxidizing flame of a gaslamp， and shall not be in contact with the furnace wire， iron plate and return flame， Because iron is easy to form alloy with platinum at high temperature， reducing gas can form platinum carbide with platinum，making platinum crucible brittle.If the filter paper is cauterized in a platinum crucible， the temperature should be raised only after the carbonized filter paper is completely burned at low temperature and sufficient air.
3、 铅、铋、锑、锡、银、汞的化合物、硫化物、磷和砷的化合物等，在高温时容易被滤纸的炭或火馅的还原气体还原为相应的金属和非金属元素，它们与铂形成合金或化合物，从而损坏铂坩埚。所以，上述金属和非金属及其化合物不能在铂地埚内灼烧或熔触。
Meta llc lead， bismuth， antimony， tin， silver， mercury compounds， sulphides， phosphorous and arsenic compounds， etc.， which are easily reduced at high temperatures to the corresponding metallic and non-metallic elements by the carbon or fire-filled reducing gases of filter paper， which form alloys or compounds with platinum，Thus the platinum crucible is damaged.Therefore，the above-mentioned metals and non-metals and their compounds can not be burned or melted in a platinum crucible.
4、 卤素和能析出卤素的物质如王水、HCI， 以及某些氧化剂的混合物， 对铂坩埚均有侵蚀作用。
Halogen and compounds capable of precipitating halogen，such as aqua regia and HCl，as well as mixtures of some oxidants，have corrosive effects on platinum crucible.
5、碱金属氧化物、氢氧化物、硝酸盐、亚硝酸盐、氰化物、氧化钡等在高温熔融时能侵蚀铂坩埚。用碳酸钠和碳酸钾，对铂坩埚无侵蚀作用。
alkali metal oxide，hydroxide，nitrate，nitrite，cyanide，barium oxide and soon can corrode platinum crucible when melting at high temperature Sodium carbonate and potassium carbonate have no erosive effect on platinum crucible.
6、 组分不明的试样不能使用铂坩埚加热或熔融。
Samples with unknown components can not be heated or melted in platinum crucible.
7、 铂坩埚内、外壁应经常保持清洁和光亮。使用过的铂坩埚可用1：1HCI溶液煮沸清洗。如清洗不净， 可用焦硫酸钾低温熔融5一10分钟，假使用焦硫酸钾处理无效，可用碳酸钠或硼砂熔融。如仍有污点，则可用沙布包100筛孔以上的海沙加水润湿后，轻轻擦拭铂埚以恢复其表面的光泽。
Inside the platinum crucible，the outer wall should always be clean and bright.Theusedplatinumcruciblecanbeboiledin1：1HClsolution.If cleaning is not clean，can use potassium pyro sulfate low temperature melting 5-10 minutes， alse use of potassium pyro sulfate treatment is ineffective，can use sodium carbonate or borax melting.If there are stil stains， sand cloth can be used to pack100sieve above the sand water
wetting.gently wipe the platinum crucible to restore its surface luster.
8、 热的铂坩埚要用铂坩埚夹取。
The hot platinum crucible shall be clamped with a platinum crucible.
9、 铂坩埚变形时，可放在木板上，一边滚动，一边用牛角匙压坩埚内壁整形。
When the platinum crucible is deformed，the crucible can be placed on the board while rolling，and the inner wall of the crucible is shaped with a horn key.
10、 红热的0埚不能用水骤冷，以免产生裂纹。
The red-hot silver crucible can not be quenched with water to avoid cracks.
