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Wu G, Zhang C, Liu C, Li X, Cai Y, Wang M, Chu D, Liu L, Meng T, Chen Z. Magnetic tubular nickel@silica-graphene nanocomposites with high preconcentration capacity for organothiophosphate pesticide removal in environmental water: Fabrication, magnetic solid-phase extraction, and trace detection. JOURNAL OF HAZARDOUS MATERIALS 2023; 457:131788. [PMID: 37302192 DOI: 10.1016/j.jhazmat.2023.131788] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 05/31/2023] [Accepted: 06/04/2023] [Indexed: 06/13/2023]
Abstract
Organothiophosphate pesticides (OPPs) are the most common water contaminants, significantly endangering human health and bringing serious public safety issues. Thus, developing effective technologies for the removal or trace detection of OPPs from water is urgent. Herein, a novel graphene-based silica-coated core-shell tubular magnetic nanocomposite (Ni@SiO2-G) was fabricated for the first time and used for the efficient magnetic solid-phase extraction (MSPE) of the OPPs chlorpyrifos, diazinon, and fenitrothion from environmental water. The experimental factors affecting extraction efficiency such as adsorbent dosage, extraction time, desorption solvent, desorption mode, desorption time, and adsorbent type were evaluated. The synthesized Ni@SiO2-G nanocomposites showed a higher preconcentration capacity than the Ni nanotubes, Ni@SiO2 nanotubes, and graphene. Under the optimized conditions, 5 mg of tubular nano-adsorbent displayed good linearity within the range of 0.1-1 μg·mL-1, low limits of detection (0.04-0.25 pg·mL-1), low limits of quantification (0.132-0.834 pg·mL-1), good reusability (n = 5; relative standard deviations between 1.46% and 9.65%), low dosage (5 mg), and low real detection concentration (< 3.0 ng·mL-1). Moreover, the possible interaction mechanism was investigated by density functional theory calculation. Results showed that Ni@SiO2-G was a potential magnetic material for the preconcentration and extraction of formed OPPs at ultra-trace levels from environmental water.
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Affiliation(s)
- Guoxin Wu
- Anhui Provincial Engineering Laboratory for Screening and Re-evaluation of Active Compounds of Herbal Medicines in Southern Anhui, School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - Chuanqi Zhang
- Anhui Provincial Engineering Laboratory for Screening and Re-evaluation of Active Compounds of Herbal Medicines in Southern Anhui, School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - Chang Liu
- Anhui Provincial Engineering Laboratory for Screening and Re-evaluation of Active Compounds of Herbal Medicines in Southern Anhui, School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - Xiangzi Li
- Anhui Provincial Engineering Laboratory for Screening and Re-evaluation of Active Compounds of Herbal Medicines in Southern Anhui, School of Pharmacy, Wannan Medical College, Wuhu 241002, China; Anhui Laboratory of Molecule-based Materials, College of Chemistry and Materials, Anhui Normal University, Wuhu 241002, China.
| | - Yuanyuan Cai
- Anhui Provincial Engineering Laboratory for Screening and Re-evaluation of Active Compounds of Herbal Medicines in Southern Anhui, School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - Meifang Wang
- Anhui Provincial Engineering Laboratory for Screening and Re-evaluation of Active Compounds of Herbal Medicines in Southern Anhui, School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - Deqiang Chu
- Criminal Police Detachment Material Evidence Identification Center, Wuhu Municipal Public Security Bureau, Wuhu 241000, China
| | - Liyun Liu
- Criminal Police Detachment Material Evidence Identification Center, Wuhu Municipal Public Security Bureau, Wuhu 241000, China
| | - Tian Meng
- Criminal Police Detachment Material Evidence Identification Center, Wuhu Municipal Public Security Bureau, Wuhu 241000, China
| | - Zhiming Chen
- College of Biochemical Engineering, Anhui Polytechnic University, Wuhu 241000, China
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