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Investigation of a QuEChERS-Based Method for Determination of Polycyclic Aromatic Hydrocarbons in Rat Plasma by GC–MS
Journal of Analytical Toxicology ( IF 2.5 ) Pub Date : 2021-03-11 , DOI: 10.1093/jat/bkab027
Noha F El Azab 1 , Said F Hotar 2 , Yossra A Trabik 1
Affiliation  

Owing to the toxic effects of polycyclic aromatic hydrocarbons (PAHs) on humans and the environment, their sensitive biomonitoring is essential and significant. In this work, a sensitive, simple and rapid bioanalytical method was established for the simultaneous determination of 13 PAHs in rat plasma depending on QuEChERS (Quick, easy, cheap, effective and rugged method) as a preliminary step and gas chromatography–mass spectrometry (GC–MS) for identification. QuEChERS procedure was optimized where acetonitrile was employed for plasma samples extraction, which was further cleaned using primary secondary amine as the sorbent material. Optimization of GC–MS conditions was performed to produce optimum selectivity of the proposed method. The method was fully validated for rat plasma samples where recoveries, matrix effects, limit of quantitation (LOQ), linearity and precision were evaluated. Linearity range was 5–100 ng/mL for most of the 13 analytes. Average recoveries of the 13 PAHs ranged between 85.57% and 109.64% in fortified rat plasma with standard deviations <8.91 except for anthracene that showed 19.24. The limits of detection and LOQs for the 13 compounds ranged from 0.045 to 0.372 ppb and from 0.137 to 1.128 ppb, respectively. The established method was successfully implemented to perform a minor toxicokinetic study in intraperitoneally dosed rats (0.25 and 2 mg/kg in vegetable oil). The 13 PAHs were tracked in rat plasma samples for 6 h after administration, and most of the target compounds were recognized in plasma samples only at the higher dose.

中文翻译:

基于 QuEChERS 的 GC-MS 测定大鼠血浆中多环芳烃方法的研究

由于多环芳烃 (PAHs) 对人类和环境的毒性作用,对其敏感的生物监测至关重要且意义重大。在这项工作中,建立了一种灵敏、简单、快速的生物分析方法,用于同时测定大鼠血浆中的 13 种多环芳烃,该方法依赖于 QuEChERS(快速、简单、廉价、有效和耐用的方法)作为初步步骤和气相色谱-质谱法( GC-MS) 进行鉴定。QuEChERS 程序进行了优化,其中乙腈用于提取血浆样品,并使用伯仲胺作为吸附剂材料进行进一步清洁。对 GC-MS 条件进行了优化,以产生所提出方法的最佳选择性。该方法在大鼠血浆样品中得到充分验证,其中回收率、基质效应、定量限 (LOQ)、评价了线性和精密度。13 种分析物中大部分的线性范围为 5–100 ng/mL。13 种 PAH 在强化大鼠血浆中的平均回收率介于 85.57% 和 109.64% 之间,标准偏差小于 8.91,但蒽为 19.24。13 种化合物的检测限和 LOQ 范围分别为 0.045 至 0.372 ppb 和 0.137 至 1.128 ppb。所建立的方法已成功实施,以在腹腔内给药的大鼠(植物油中 0.25 和 2 毫克/千克)中进行次要毒代动力学研究。给药后 6 h 对大鼠血浆样品中的 13 种 PAHs 进行了跟踪,大多数目标化合物仅在较高剂量时才在血浆样品中被识别。13 种 PAH 在强化大鼠血浆中的平均回收率介于 85.57% 和 109.64% 之间,标准偏差小于 8.91,但蒽为 19.24。13 种化合物的检测限和 LOQ 范围分别为 0.045 至 0.372 ppb 和 0.137 至 1.128 ppb。所建立的方法已成功实施,以在腹腔内给药的大鼠(植物油中 0.25 和 2 毫克/千克)中进行次要毒代动力学研究。给药后 6 h 对大鼠血浆样品中的 13 种 PAHs 进行了跟踪,大多数目标化合物仅在较高剂量时才在血浆样品中被识别。13 种 PAH 在强化大鼠血浆中的平均回收率介于 85.57% 和 109.64% 之间,标准偏差小于 8.91,但蒽为 19.24。13 种化合物的检测限和 LOQ 范围分别为 0.045 至 0.372 ppb 和 0.137 至 1.128 ppb。所建立的方法已成功实施,以在腹腔内给药的大鼠(植物油中 0.25 和 2 毫克/千克)中进行次要毒代动力学研究。给药后 6 h 对大鼠血浆样品中的 13 种 PAHs 进行了跟踪,大多数目标化合物仅在较高剂量时才在血浆样品中被识别。分别为 372 ppb 和 0.137 至 1.128 ppb。所建立的方法已成功实施,以在腹腔内给药的大鼠(植物油中 0.25 和 2 毫克/千克)中进行次要毒代动力学研究。给药后 6 h 对大鼠血浆样品中的 13 种 PAHs 进行了跟踪,大多数目标化合物仅在较高剂量时才在血浆样品中被识别。分别为 372 ppb 和 0.137 至 1.128 ppb。所建立的方法已成功实施,以在腹腔内给药的大鼠(植物油中 0.25 和 2 毫克/千克)中进行次要毒代动力学研究。给药后 6 h 对大鼠血浆样品中的 13 种 PAHs 进行了跟踪,大多数目标化合物仅在较高剂量时才在血浆样品中被识别。
更新日期:2021-03-11
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