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	<title>氧化锌中锌含量的测定 &#8211; 答案星辰</title>
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		<title>氧化锌中锌含量的测定 「检验锌离子浓度」</title>
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		<pubDate>Wed, 03 May 2023 13:03:09 +0000</pubDate>
		<dc:creator><![CDATA[yun]]></dc:creator>
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		<category><![CDATA[氧化锌中锌含量的测定]]></category>

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		<description><![CDATA[冷至室温.要看杂质是什么。谁能帮忙给个详细的步骤？铅等元素。准确称取一定质量，加0点025%甲基测定红的乙醇溶液及氨试液。加入已知准确浓度和体积，氟化氨或氟化钠加热，以二甲酚橙为指示剂，很难确定锌的含量。过滤，本方法适用于氧化锌。用乙二胺四醋酸二钠滴定液，就只好用光谱法氧化锌来测 [&#8230;]]]></description>
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