Prussian Blue Loaded on Magnetic Sepiolite Nanocomposites for Detection of Thallium Using Total Reflection X-ray Fluorescence Spectroscopy,ACS Applied Nano Materials

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Prussian Blue Loaded on Magnetic Sepiolite Nanocomposites for Detection of Thallium Using Total Reflection X-ray Fluorescence Spectroscopy
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2024-03-13 , DOI: 10.1021/acsanm.4c00048
Lu Deng ₁ , Runjuan Wu ₁ , Linlin Zhang _{2,

3} , Ruirui Zhu ₄ , Jun Zou ₁ , Changcheng Gu ₁ , Yeyao Wang ₂ , Chunyi Tong ₁ , Rilong Zhu _{1,

3}

Affiliation

As a highly toxic element, it is crucial to accurately detect the concentration of ththalium (Tl) on-site in the environment. However, the low concentration is out of the measurement range of many instruments. Pre-enrichment will significantly decrease the lower detection limit of the instruments. Here, Prussian blue loaded on magnetic sepiolite (PB/Fe₃O₄/SEP) nanocomposites have been synthesized and utilized as an adsorbent to enrich and separate the trace amounts of heavy metal Tl(I) from wastewater. The maximum adsorption capacity of PB/Fe₃O₄/SEP nanocomposites for Tl(I) is about 177.3 mg·g^–1, and the recovery efficiency is over 94%. After pre-enrichment, the detection limit of total reflection X-ray fluorescence spectroscopy (TXRF) was reduced to 0.84 μg·L^–1, about 100 times greater than that without enrichment. In all, the combined strategy of pre-enrichment by PB/Fe₃O₄/SEP nanocomposites and detection by TXRF is suitable for on-site emergency monitoring of Tl(I).

中文翻译：

磁性海泡石纳米复合材料负载普鲁士蓝，利用全反射 X 射线荧光光谱法检测铊

作为一种剧毒元素，准确检测环境中铊（Tl）的浓度至关重要。然而，低浓度超出了许多仪器的测量范围。预富集将显着降低仪器的检测下限。本文合成了负载磁性海泡石（PB/Fe ₃ O ₄ /SEP）纳米复合材料的普鲁士蓝，并将其用作吸附剂来富集和分离废水中的痕量重金属Tl(I)。 PB/Fe ₃ O ₄ /SEP纳米复合材料对Tl(I)的最大吸附容量约为177.3 mg·g ^–1，回收效率超过94%。预富集后，全反射X射线荧光光谱（TXRF）的检出限降低至0.84 μg·L ^–1，比未富集时提高了约100倍。综上所述，PB/Fe ₃ O ₄ /SEP纳米复合材料预富集和TXRF检测相结合的策略适合Tl(I)的现场应急监测。

更新日期：2024-03-13

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