Parts-per-trillion determination of PAHs in different real water samples using novel magnetic solid phase nano extraction method
محل انتشار: اولین کنفرانس ملی نانو از سنتز تا صنعت
سال انتشار: 1396
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 450
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شناسه ملی سند علمی:
NFSI01_151
تاریخ نمایه سازی: 17 آبان 1396
چکیده مقاله:
Polycyclic aromatic hydrocarbons (PAHs) are formed during the incomplete burning of coal, oil and gas, garbage, or other organic substances like tobacco or charbroiled meat. They are found in coal tar, crude oil, creosote, and roofing tar, but a few are used in medicines or to make dyes, plastics, and pesticides [1]. So, they can spread in environmental by thousands way. There is a need to detect them in environment in low levels because PAHs affect organ systems such as, Dermal (Skin), Hepatic (Liver), Immunological (Immune System) [2]. In this work, solid-phase nano-extraction method (SPNE) [3] has been used for extraction and pre-concentration of poly aromatic hydrocarbons (PAHs) by magnetic carboxyl multi-walled carbon nanotubes (MMWCNTs) as solid nano-Sorbent phase in aqueous samples. Parameters affecting extraction efficiency such as magnetic nano sorbent amount, extraction solvent type and amount, extraction time, and salt content were studied. The results showed under optimized conditions, the correlation coefficient was up to 0.9900, limits of detection (LODs) were between 1.1- 4.2 ng L−1, and limits of quantification (LOQs) were between 3.1-13.6 ng L−1. The recoveries were between 98-112% for different spiked PAH analytes in tap and well water samples. The relative standard deviation for water samples spiked with two different spiking levels were found between 3-10%. This chemistry method is rapid, and easy to use also have less consumption of organic solvent for detection and determination of trace levels of PAHs in environmental waters therefore we have introduced it as green chemistry method
کلیدواژه ها:
نویسندگان
Shadi Piramoon
Department of Chemistry, Science and Research Branch, Islamic Azad University, P. O. Box: ۱۴۵۱۵-۷۷۵, Tehran, Iran.
Parviz Aberoomand Azar
Department of Chemistry, Science and Research Branch, Islamic Azad University, P. O. Box: ۱۴۵۱۵-۷۷۵, Tehran, Iran.
Mohammad Saber Tehrani
Department of Chemistry, Science and Research Branch, Islamic Azad University, P. O. Box: ۱۴۵۱۵-۷۷۵, Tehran, Iran.
Sirwan Mohammadiazar
Department of Chemistry, Sanandaj Branch, Islamic Azad University, Sanandaj, Iran.