Azomethine H Spectrophotometric Method for Determining Boron in Humic Fertilizer is described.
文介绍了采用甲亚胺-H
分光光度法分析
类肥料中元素
的方法。
Azomethine H Spectrophotometric Method for Determining Boron in Humic Fertilizer is described.
文介绍了采用甲亚胺-H
分光光度法分析
类肥料中元素
的方法。
This is a summery of the synthesis, structure and reaction of borazine.
对环氮烷的合成、结构和反应进行了综述。
It was asserted that the ore is mainly composed of minerals of kurnakovite, inderite and pinnoite.
确定了该镁矿的主要矿物组成为库水
镁石、多水
镁石及
镁石。
By fuming with sulfuric-phosphoric acid mixture the residual hydrofluoride was then expelled,and boron was finally determined by curcumin spectrophotometry after distillation.
同时,对所拟溶样条件下所得的分析结果是否为
问题进行了进一步探讨,结果证实,所拟溶样条件下
的测定结果为
。
Two new exocyclic ring-fused boron-dipyrromethene (BDP) dyes with benzo crown ether subunit at meso-position were prepared.Their spectroscopic and electrochemical properties were investigated.
文报道了两种中位为苯并冠醚亚单元取代的含稠合外环的
-二吡咯亚甲基染料的合成、光谱和电化学性质。
Thus, the boron-bearing rock system and the magnesian rocks are the foundation of the borate deposits, whereas regional metamorphism and migmatitization and tectonism are the necessary conditions.
含岩系、镁质容矿岩石是
矿形成的物质基础,区域变质及混合岩化作用、构造活动是
矿形成的必要条件。
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