氫氧化鉀生產過程中的質量指標您知道包含什么要點嗎？雖然我們在生活中可能不會常使用過，但一些事項可以來了解一番，比如這個問題，下面氫氧化鉀廠家為您講解。

Do you know the key points of the quality indicators in the production process of potassium hydroxide? Although we may not use it often in our life, we can learn something about it. For example, the potassium hydroxide manufacturer will explain this problem to you.

1．碳酸鹽：在含量分析中介于酚酞和甲基橙終點之間所耗的每mL1mol/L硫酸，相當于碳酸鉀138.2mg。

1. Carbonate: every mL1mol/L of sulfuric acid consumed between the end points of phenolphthalein and methyl orange in content analysis is equivalent to 138.2mg of potassium carbonate.

2．重金屬：取試樣670mg，溶于5ml水和5ml稀鹽酸試液(TS-117)的混合液中。加熱沸，冷卻，用水稀釋25ml，后過濾。以此作為試樣液，按GT-16方法測定。用含20μg鉛離子的對照液(溶液A)。

2. Heavy metals: take 670mg sample and dissolve it in 5ml water and 5ml dilute hydrochloric acid test solution (TS-117). Heat to boiling, cool, dilute with water to 25ml, and filter. Take this as the sample solution, and determine according to GT-16 method. 20 for use μ G Reference solution of lead ion (solution A).

3．水不溶物：5%試樣水溶液應無色透明。

3. Water insoluble matter: 5% sample water solution shall be colorless and transparent.

4．鉛：取試樣1g溶于5ml水和11ml稀鹽酸試液的混合液中，冷卻。以此作為試樣液按GT-18方法測定。對照液中的鉛離子量取10μg。

4. Lead: Dissolve 1g of the sample in 5ml water and 11ml dilute hydrochloric acid test solution, and cool it. Take this as the sample solution and determine according to GT-18 method. The amount of lead ion in the control solution is 10 μ g。

5．汞：按CT-22方法測定。標準液和試樣液按如下方法制備。

5. Mercury: determined according to CT-22 method. The standard solution and sample solution shall be prepared as follows.

(1)標準液的制備：按GT-22制各貯液和稀釋液，使所得溶液每ml中含汞1μg。取該溶液1ml，放入－50ml燒杯，加水20ml、1:4稀硫酸溶液1ml和4%高錳酸鉀溶液1ml。用表面皿蓋住燒杯，煮沸數秒鐘后冷卻，備用。

(1) Preparation of standard solution: prepare each storage solution and diluent according to GT-22, so that each ml of the obtained solution contains 1 mercury μ g。 Take 1ml of the solution, put it into a - 50ml beaker, and add 20ml of water, 1ml of 1:4 dilute sulfuric acid solution and 1ml of 4% potassium permanganate solution. Cover the beaker with a watch glass, boil it for a few seconds, and then cool it for standby.

(2)試樣液的制備：取試樣10.0g放入－100ml燒杯，加水15ml使之溶解，加酚酞試液(TS-167)2滴，在不斷攪拌下用1:1稀鹽酸溶液緩慢中和。加1:稀硫酸溶液1ml和4%高錳酸鉀溶液1ml，用表面皿蓋住燒杯，煮沸數秒鐘后冷卻，備用。

(2) Preparation of sample solution: put 10.0g of sample into a 100ml beaker, add 15ml of water to dissolve it, add 2 drops of phenolphthalein test solution (TS-167), and slowly neutralize it with 1:1 dilute hydrochloric acid solution under constant stirring. Add 1ml of 1: dilute sulfuric acid solution and 1ml of 4% potassium permanganate solution, cover the beaker with a watch glass, boil for a few seconds, and then cool down for standby.

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