期刊
SCIENTIFIC REPORTS
卷 12, 期 1, 页码 -出版社
NATURE PORTFOLIO
DOI: 10.1038/s41598-022-16948-z
关键词
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资金
- Public Welfare Technology Application Research Project of Zhejiang Province, China [LGF22B070001]
- Zhejiang Province Natural Science Foundation of China [LQ15E080007]
- Jinhua Science and Technology Plan Project [2020-4-195, 2019-4-168]
- Competitive Projects in Science and Technology Programmes of Quzhou City [2020K08]
- Science Foundation of Qianjiang College [2022QJJL06]
- Science Foundation of Qianjiang College
- Meiya Company's Project Higher Education Research Projects of Zhejiang Province Association for Higher Education, China [KT2021356]
- Educational Science Planning Projects of Zhejiang Province, China [2021SCG031]
- Emerging talent Program of Zhejiang Province, China [2021R426059]
In this study, a low-cost, fast, and easy-to-use ultrasound-assisted dispersive-magnetic nanocomposites-solid-phase microextraction (UA-DMNSPME) method was developed for the preconcentration and determination of trace amounts of Auramine O (AO) and methylene blue (MB) dyes in environmental water samples. The method utilized magnesium oxide nanoparticles (MgO-NPs) as adsorbents and showed high preconcentration factor, low limits of detection, and short extraction time. The proposed method can be considered efficient for the extraction and preconcentration of AO and MB from water and wastewater samples.
In this study, we investigated the process of preconcentrate and determine trace amounts of Auramine O (AO) and methylene blue (MB) dyes in environmental water samples. For this purpose, the ultrasound-assisted dispersive-magnetic nanocomposites-solid-phase microextraction (UA-DMNSPME) method was performed to extract AO and MB from aqueous samples by applying magnesium oxide nanoparticles (MgO-NPs). The proposed technique is low-cost, facile, fast, and compatible with many existing instrumental methods. Parameters affecting the extraction of AO and MB were optimized using response surface methodology (RSM). Short extraction time, low experimental tests, low consumption of organic solvent, low limits of detection (LOD), and high preconcentration factor (PF) was the advantages of method. The PF was 44.5, and LOD for AO and MB was 0.33 ng mL(-1) and 1.66 ng mL(-1), respectively. The linear range of this method for AO and MB were 1-1000 ng mL(-1) and 5-2000 ng mL(-1), respectively. In addition, the relative standard deviation (RSD; n = 5) of the mentioned analytes was between 2.9% and 3.1%. The adsorption-desorption studies showed that the efficiency of adsorbent extraction had not declined significantly up to 6 recycling runs, and the adsorbent could be used several times. The interference studies revealed that the presence of different ions did not interfere substantially with the extraction and determination of AO and MB. Therefore, UA-DMNSPME-UV/Vis method can be proposed as an efficient method for preconcentration and extraction of AO and MB from water and wastewater samples.
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