Carboxylated Multiwalled Carbon Nanotubes as Dispersive Solid-Phase Extraction Sorbent to Determine Eighteen Polychlorinated Biphenyls in Vegetable Samples by Gas Chromatography-Mass Spectrometry
المؤلفون المشاركون
Liu, Tengfei
Yang, Daifeng
Mao, Jian
Zhang, Xueming
Dong, Minghui
المصدر
Journal of Analytical Methods in Chemistry
العدد
المجلد 2019، العدد 2019 (31 ديسمبر/كانون الأول 2019)، ص ص. 1-10، 10ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2019-08-20
دولة النشر
مصر
عدد الصفحات
10
التخصصات الرئيسية
الملخص EN
A simple, rapid, and reliable method based on dispersive solid-phase extraction (d-SPE) and gas chromatography-mass spectrometry (GC-MS) was developed for quantitating polychlorinated biphenyls (PCBs) in vegetable samples.
Parameters affecting both the extraction yields and cleanup efficiency, including the type and volume of extraction solvent, extraction time, type and volume of cleanup sorbent, and cleanup time, were optimized.
Matrix effects were evaluated, and matrix-matched calibration was recommended.
Under the optimized conditions, carboxylated multiwalled carbon nanotubes (MWCNTs-COOH), which exhibit excellent adsorption capabilities due to large surface area and unique structure, were employed as d-SPE sorbent to remove interfering substances, rather than the analytes, from vegetable samples.
Satisfactory linear relationship was observed for all PCBs across a concentration range of 5–500 μg/kg with correlation coefficients no less than 0.9993.
Four representative vegetables (cucumber, tomato, lettuce, and cabbage) were selected as matrices for method validation.
Each matrix was spiked at concentrations of 5, 10, and 100 μg/kg to evaluate recoveries, which ranged from 84.5% to 116.5% with relative standard deviations (n=6) between 0.6% and 17.6%.
The limits of detection and the limits of quantification ranged from 0.3 to 1.4 μg/kg and 0.8 to 4.5 μg/kg, respectively.
Twelve real vegetable samples were analyzed using the proposed method.
Three of the target PCBs were detected in one lettuce sample with the total concentration of 17.9 μg/kg.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Liu, Tengfei& Yang, Daifeng& Mao, Jian& Zhang, Xueming& Dong, Minghui. 2019. Carboxylated Multiwalled Carbon Nanotubes as Dispersive Solid-Phase Extraction Sorbent to Determine Eighteen Polychlorinated Biphenyls in Vegetable Samples by Gas Chromatography-Mass Spectrometry. Journal of Analytical Methods in Chemistry،Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1169140
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Liu, Tengfei…[et al.]. Carboxylated Multiwalled Carbon Nanotubes as Dispersive Solid-Phase Extraction Sorbent to Determine Eighteen Polychlorinated Biphenyls in Vegetable Samples by Gas Chromatography-Mass Spectrometry. Journal of Analytical Methods in Chemistry No. 2019 (2019), pp.1-10.
https://search.emarefa.net/detail/BIM-1169140
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Liu, Tengfei& Yang, Daifeng& Mao, Jian& Zhang, Xueming& Dong, Minghui. Carboxylated Multiwalled Carbon Nanotubes as Dispersive Solid-Phase Extraction Sorbent to Determine Eighteen Polychlorinated Biphenyls in Vegetable Samples by Gas Chromatography-Mass Spectrometry. Journal of Analytical Methods in Chemistry. 2019. Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1169140
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1169140
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر