Trace element determination in high-salinity water using an online ion imprinted helical tube demineralizer combined with ICP-MS,Journal of Analytical Atomic Spectrometry

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Trace element determination in high-salinity water using an online ion imprinted helical tube demineralizer combined with ICP-MS
Journal of Analytical Atomic Spectrometry ( IF 3.1 ) Pub Date : 2020-05-13 , DOI: 10.1039/d0ja00060d
Hongyan Li _{1,

2,

3,

4} , Bei Zheng _{1,

2,

3,

4} , Chunfu Li _{1,

2,

3,

4} , Jiale Zheng _{1,

2,

3,

4} , Yanfen Zhang _{1,

2,

3,

4}

Affiliation

Matrix interference is a common problem in the measurement of trace elements in water via ICP-MS. To solve this problem, a novel demineralizer was developed to combine with ICP-MS for determining trace elements in high-salinity water samples, which were filled with a novel ion imprinted material. In the analysis of water samples containing 120 mg L⁻¹ of Ca²⁺, Mg²⁺, and Na⁺, the recoveries of As, Cd, Cu, Mn, Ni, Pb, Sb, and Tl were all maintained between 80% and 120% during the 10 hours of the continuous operation of the demineralizer, with the trueness and repeatability for all elements standing below 3% and 5%, respectively. After the usage of the demineralizer, the detection limits of the method for As, Cd, Cu, Mn, Ni, Pb, Sb, and Tl were reduced to less than one-tenth of its original values. In the analysis of real water samples, a standard substance containing trace elements in the coastal water (CASS-5) and 5 offshore seawater samples were analyzed. The trueness and repeatability for all elements were below 5% and the recoveries were between 85–104%, which all met the requirements of analytical chemistry.

中文翻译：

在线离子印迹螺旋管脱盐机结合ICP-MS测定高盐度水中的痕量元素

通过ICP-MS测量水中的痕量元素时，基质干扰是一个常见问题。为解决此问题，开发了一种新型脱盐器，与ICP-MS结合使用，可测定高盐度水样品中的痕量元素，该样品中填充了新型离子印迹材料。在分析包含120 mg L ^-1 Ca 2 ⁺，Mg ²⁺和Na ⁺的水样时，在脱盐器连续运行10小时内，As，Cd，Cu，Mn，Ni，Pb，Sb和Tl的回收率均保持在80％至120％之间，所有元素的真实性和可重复性分别低于3％和5％。使用脱盐机后，该方法对As，Cd，Cu，Mn，Ni，Pb，Sb和T1的检测限降低到原始值的十分之一以下。在实际水样分析中，分析了沿海水（CASS-5）和5个近海海水样中含有微量元素的标准物质。所有元素的真实性和可重复性均低于5％，回收率在85–104％之间，均满足分析化学的要求。

更新日期：2020-07-08

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