Application of an optimized dispersive nanomaterial ultrasound‐assisted microextraction method for preconcentration of carbofuran and propoxur and their determination by high‐performance liquid chromatography with UV detection

• Published in: Journal of separation science Vol. 37; no. 21; pp. 3117 - 3124
• Main Authors: Khodadoust, Saeid, Talebianpoor, Mohammad Sharif, Ghaedi, Mehrorang
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley-VCH 01.11.2014; Blackwell Publishing Ltd; Wiley; Wiley Subscription Services, Inc
• Subjects: Acetates; activated carbon; Adsorbents; Adsorption; Analysis methods; Analytical chemistry; Applied sciences; Biological and medical sciences; carbofuran; Carbofuran - analysis; Carbofuran - isolation & purification; Central composite design; Chemistry; Chromatographic methods and physical methods associated with chromatography; Chromatography; Chromatography, High Pressure Liquid - instrumentation; Chromatography, High Pressure Liquid - methods; desorption; detection limit; Dispersive nanomaterial ultrasound-assisted microextraction; Drinking water and swimming-pool water. Desalination; Exact sciences and technology; Extraction; Food industries; Fundamental and applied biological sciences. Psychology; High-performance liquid chromatography; insecticide residues; Insecticides; Insecticides - analysis; Insecticides - isolation & purification; ionic strength; Liquid chromatography; Liquid Phase Microextraction - instrumentation; Liquid Phase Microextraction - methods; microextraction; Nanomaterials; nanoparticles; Nanostructure; Nanostructures - chemistry; Natural water pollution; Nickel; Non alcoholic beverage industries and mineral waters; Osmolar Concentration; Other chromatographic methods; Plackett-Burman design; Pollution; propoxur; Propoxur - analysis; Propoxur - isolation & purification; screening; Sonication; temperature; Ultrasonic imaging; Ultrasonic testing; ultrasonics; Water Pollutants, Chemical - analysis; Water Pollutants, Chemical - isolation & purification; water pollution; Water treatment and pollution; zinc acetate; Carbofuran; Chemical analysis; Insecticide; Central composite design; Nanoparticle; HPLC chromatography; Insecticides; Optimization; Dispersive nanomaterial ultrasound-assisted microextraction; Surface structure; Characterization; Freshwater environment; Activated carbon; Stream; Zinc Sulfides; Adsorbent; Ultrasound; Quantitative analysis; Trace analysis; Scanning electron microscopy; Natural mineral water; Plackett―Burman design; Pesticides; Doped materials; Transition metal; Tap water; High-performance liquid chromatography; X ray diffraction; Field emission microscopy; Operating conditions; Ultraviolet detector; Transmission electron microscopy; Experimental design; Morphology; Preparation; Surface water; Water quality; Nickel; Water pollution; River water; Carbamate; Chemometrics; Plackett-Burman design
• ISSN: 1615-9306; 1615-9314
• DOI: 10.1002/jssc.201400816

An extraction method based on dispersive nanomaterial ultrasound‐assisted microextraction was used for the preconcentration of carbofuran and propoxur insecticides in water samples prior to high‐performance liquid chromatography with UV detection. ZnS:Ni nanoparticles were synthesized based on the reaction of the mixture of zinc acetate and nickel acetate with thioacetamide in aqueous media and then loaded on activated carbon (ZnS:Ni‐AC). Different methods were used for recognizing the properties of ZnS:Ni‐AC and then this nanomaterial was used for extraction of carbamate insecticide as new adsorbent. The influence of variables on the extraction method (such as amount of adsorbent (mg: NiZnS‐AC), pH and ionic strength of sample solution, vortex and ultrasonic time (min), ultrasound temperature and desorption volume (mL) was investigated by a screening 2⁷–⁴ Plackett–Burman design. Then the significant variables were optimized by using a central composite design combined with a desirability function. At optimum conditions, this method had linear response >0.0060–10 μg/mL with detection limit 0.0015 μg/mL and relative standard deviations <5.0% (n = 3).