<p><b>砷酸鑭</b>是一種無機化合物，化學式為LaAsO<sub>4</sub>。
</p><p>在處理含砷廢水時，氯化鑭轉化為砷酸鑭沉澱下來，其適宜pH為3~10。</p>
<h2><span id=".E5.88.B6.E5.A4.87"></span><span id="制备">製備</span></h2>
<p>砷酸鑭可由砷酸和硝酸鑭於160°C進行水熱反應得到。
</p>
<dl><dd>La(NO<sub>3</sub>)<sub>3</sub> + H<sub>3</sub>AsO<sub>4</sub> → LaAsO<sub>4</sub> + 3 HNO<sub>3</sub></dd></dl><h2><span id=".E5.8F.82.E8.80.83.E6.96.87.E7.8C.AE"></span><span id="参考文献">參考文獻</span></h2>

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**砷酸鑭**是一種無機化合物，化學式為 LaAsO4。

在處理含砷廢水時，氯化鑭轉化為砷酸鑭沉澱下來，其適宜 pH 為 3~10。

## 製備

砷酸鑭可由砷酸和硝酸鑭於 160°C 進行水熱反應得到。

　
: La(NO3)3 + H3AsO4 → LaAsO4 + 3 HNO3

## 參考文獻
14214-04-1