純氯化鈉 的英文怎麼說
中文拼音 [chúnhuànà]
純氯化鈉
英文
pure sodium chloride-
Abstract : this paper describes a new preparation technique of calcium iodate. at the presence of hydrochloric acid, iodine is oxidated by sodium chlorate, and then reacts with calium hydroxide. a series of constrasted experiments are made on the conditions and different techniqures. relatively high productivity and purity at low cost. easy controllability and operation are the main features of this kind of technique
文摘:介紹了以單質碘為原料,在鹽酸存在下,經氯酸鈉氧化,再與氫氧化鈣進行中和反應制備碘酸鈣的方法,並做了最佳工藝條件和不同方法的對比實驗.本法具有收率較高、純度較高、生產成本較低及反應條件易控制、設備簡單、操作方便等特點The improved determination method to determine the nacl of the heavy alkali of less salt is described in the paper, its accuracy and feasibility are verified by test, and the improved method can get good results
摘要文章針對純堿企業低鹽重堿分析中氯化鈉含量難以準確測定這一難題,提出了加大稱樣量、加熱除氨、硝酸中和除二氧化碳的改進方法,並通過實驗對改進方法的可行性和準確性進行了驗證,取得了滿意的效果。Abstract : the expressway landscape and its design and studies, the shift from economic compensation of forestland to landscape compensation during the construction of high - grade highway, the measures to conduct ecological environmental protection and the relationship between highway design and living environmental protection are discussed and studied
文摘:紫外光度法測定水中油類時在標準油品、波長的選擇以及氯化鈉用量和石油醚純度等方面存在的問題進行了探討,提出以工作曲線代替標準曲線,使回收率達到97 %左右。
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