title: Membrane protected micro-solid-phase extraction of organochlorine pesticides in milk samples using zinc oxide incorporated carbon foam as sorbent.
abstract: In this work, zinc oxide nanoparticles incorporated carbon foam was utilized as sorbent for extraction and preconcentration of fifteen organochlorine pesticides in milk samples. The sorbent was prepared by a fast and single step reaction between the sucrose and zinc nitrate that was accomplished by heating the mixture for 10min. The resulting sorbent was characterized by scanning electron microscopy and X-ray diffraction. The sorbent was then employed in membrane protected micro-solid-phase extraction (μ-SPE) of OCPs in milk samples. This extraction technique is suitable for complex matrices such as milk because it provides effective protection of the sorbent inside the polypropylene membrane. The extracted samples were analyzed by gas chromatography mass spectrometry. The factors that affect the performance of μ-SPE were optimized. This method provided good linear range for all target compounds with coefficient of determinations up to 0.9998. Limits of detection ranged from 0.19 to 1.64ngmL-1. This method also provided satisfactory values for intra and inter-day precision with RSDs ranging between 2.3 to 10.2%.
authors.affiliation: Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia; Center for Environment and Water, Research Institute, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia.
authors.forename: Muhammad
authors.initials: M
authors.lastname: Sajid
authors.affiliation: Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia; Center of Research Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia. Electronic address: cbasheer@kfupm.edu.sa.
authors.forename: Chanbasha
authors.initials: C
authors.lastname: Basheer
authors.affiliation: Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia; Center of Research Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia.
authors.forename: Muhammad
authors.initials: M
authors.lastname: Mansha
mesh_terms: D000818:Animals; D002244:Carbon / Q000737:chemistry; D004785:Environmental Pollutants / Q000032:analysis / Q000302:isolation & purification*; D008401:Gas Chromatography-Mass Spectrometry; D006843:Hydrocarbons, Chlorinated / Q000032:analysis / Q000302:isolation & purification*; D057230:Limit of Detection; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D008892:Milk / Q000737:chemistry*; D010575:Pesticides / Q000032:analysis / Q000302:isolation & purification*; D052617:Solid Phase Microextraction / Q000379:methods*; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D004785:Environmental Pollutants; D006843:Hydrocarbons, Chlorinated; D010575:Pesticides; D002244:Carbon; D015034:Zinc Oxide
keywords: Carbon foam; Microextraction and solid-phase extraction; Preconcentration; Zinc nanoparticles