Speciation analysis on europium(III) using laser-induced breakdown spectroscopy
Speciation analysis on europium(III) using laser-induced breakdown spectroscopy
复制标题
使用激光诱导击穿光谱法对铕 (III) 进行形态分析
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
S. Nagasaki
中科院分区：
文献类型：
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作者：
H. Hotokezaka;Satoru Tanaka;A. Suzuki;S. Nagasaki
利用激光诱导击穿光谱 (LIBS) 研究了水溶液中 Eu(III) 沉淀的生成以及 Eu 在 TiO2 颗粒上的吸附。等离子体发射强度与Eu浓度图在pH 1.1的Eu水溶液6.6 × 10-3 M - 1.3 × 10-2 M和pH 5.0的Eu2O3悬浮液6.6 × 10-5 M - 6.6 × 10-4 M的浓度范围内表现出良好的线性。发现通过Eu的等离子体发射强度的急剧增加来检测Eu沉淀的生成。结果表明，LIBS 可用于分析水溶液中 Eu 的颗粒和沉淀，即使 Eu 离子浓度高出几个数量级。此外，我们可以在没有 TiO2 时无法检测到 Eu 离子等离子体发射的条件下测量吸附在 TiO2 颗粒上的 Eu 离子的等离子体发射。因此，LIBS技术被认为有助于研究Eu的胶体生成。
The generation of Eu(III) precipitation and the Eu sorption on TiO2 particles in aqueous solution were studied using laser-induced breakdown spectroscopy (LIBS). The plasma emission intensity vs. the Eu concentration plot showed a good linearity in the concentration range of 6.6 × 10-3 M - 1.3 × 10-2 M for Eu aqueous solution at pH 1.1 and 6.6 × 10-5 M - 6.6 × 10-4 M for Eu2O3 suspension at pH 5.0. It was found that the generation of Eu precipitation was detected through a drastic increase of plasma emission intensity of Eu. The results suggested that LIBS is useful for analyzing the particles and the precipitation of Eu in aqueous solution, even if the Eu ion concentration is higher by orders of magnitude. Furthermore, we could measure the plasma emission of Eu ions sorbed on TiO2 particles under the conditions where the plasma emission of Eu ions could not be detected in the absence of TiO2. Hence, LIBS technique is considered to be useful to study the colloid generation of Eu.