potassium-argon method

The Determination of Tea Saponin by Potassium Bromate Method

溴酸钾法测定茶皂素

The preparation method prepares the potassium trimolybdate trihydrate nanowires through the reaction of hexaammonium molybdate tetrahydrate and potassium ions in water.

本发明通过四水合七钼酸铵在水中和钾离子反应制备三水合三钼酸钾纳米线。

The main methods are: glass-electrodes method, potassium dichromate method and statistical method.

采用的主要方法有: 玻璃电极法, 重铬酸钾法,统计学方法等.

Production of Potassium Sulfate from Potassium Chloride and Thenardite by Metathesis Conversion Method

氯化钾与无水芒硝复分解转化法制取硫酸钾方法的探讨

It has obvious technical, economical and safety advantages over the traditional method of producing potassium tert butoxide from metallic potassium.

它比传统金属钾制取叔丁醇钾有明显的技术、经济、安全优势。

Using the waste material containing iron, potassium ferrate(ⅵ) is synthesized with the method of oxidation of hypochlorite, and a stabilizer is added into the product, which efficiently improves the stability of the product.

以含铁废料为原料，采用次氯酸盐氧化法合成了高铁酸钾，并在产品中添加一种稳定剂W，有效地提高了产品的稳定性。

"A producing potassium-Calcium fertilizer method" is an inventive patent.

贵州大学的国家发明专利一种钾钙肥的生产方法是一种利用不溶性含钾岩石生产钾钙肥的新方法。

In accordance with the existing state of the tested composition in tobacco leaves, the pre-treatment for the routine method was improved and the same testing liquid was established for determining the content of nicotine, potassium and chlorine.

依据被测成分在烤烟烟叶中的存在状态，对常规方法的前处理进行改进，建立同一待测液，同时测定烟叶样品中烟碱、钾和氯的含量。

It was dated by the potassium-argon method to 1. 8 million years old.

由钾 ― 氩法测定其年龄为180万年.

The preparation method of potassium pentaborate ( KB5O8) was studied with the replacement reaction between potassium chloride and sodium pentaborate solution.

研究了利用氯化钾晶体和五硼酸钠溶液的复分解反应制备五硼酸钾的方法。

Preparation of potassium ferrate by chemical-electrolytic oxidation method

化学-电解氧化法制备高铁酸钾的研究