从不同基质中提取草甘膦和氨基甲基膦酸的新标准程序:HPLC-UV检测试剂盒。

IF 4.4 Q1 TOXICOLOGY
Francesco Chiara, Sarah Allegra, Elisa Arrigo, Daniela Di Grazia, Francesco Maximillian Anthony Shelton Agar, Raluca Elena Abalai, Sara Gilardi, Silvia De Francia, Daniele Mancardi
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引用次数: 0

摘要

背景:自20世纪70年代初以来,草甘膦作为除草剂被广泛使用。欧洲的每日接触限值为0.3毫克/公斤体重/天,美国为1.75毫克/公斤体重/天。在其衍生物中,氨基甲基膦酸是最稳定和最丰富的。因此,了解它们的生物效应需要可靠的方法在生物样品中进行量化。方法:建立并验证了一种快速、低成本、可靠的测定草甘膦和氨基甲基膦酸浓度的色谱方法。验证包括以下参数:特异性、选择性、基质效应、准确度、精密度、校准性能、定量限、回收率和稳定性。样品采用阴离子交换树脂提取,盐酸50.0 mmol/L洗脱。HPLC分析时,将分析物衍生化,在C18柱上分离,流动相为磷酸缓冲液(0.20 mol/L, pH 3.0)和乙腈(85:15),在240 nm处检测。结果:该方法具有较高的可靠性和重复性。其性能符合所有验证标准,确认了其在不同生物和实验设置中定量草甘膦和氨基甲基膦酸的适用性。结论:该方法可为实验研究、医学诊断、质量控制和食品安全提供实用资源。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
New Standardized Procedure to Extract Glyphosate and Aminomethylphosphonic Acid from Different Matrices: A Kit for HPLC-UV Detection.

Background: Glyphosate has been extensively used as herbicide since the early 1970s. The daily exposure limit is set at 0.3 mg/kg bw/d in Europe and 1.75 mg/kg bw/d in the USA. Among its derivatives, aminomethylphosphonic acid is the most stable and abundant. Understanding their biological effects then requires reliable methods for quantification in biological samples.

Methods: We developed and validated a fast, low-cost, and reliable chromatographic method for determining glyphosate and aminomethylphosphonic acid concentrations. The validation included following parameters: specificity, selectivity, matrix effect, accuracy, precision, calibration performance, limit of quantification, recovery, and stability. Sample extraction employed an anion exchange resin with elution using hydrochloric acid 50.0 mmol/L. For HPLC analysis, analytes were derivatized, separated on a C18 column with a mobile phase of phosphate buffer (0.20 mol/L, pH 3.0) and acetonitrile (85:15), and detected at 240 nm.

Results: The method demonstrated high reliability and reproducibility across various matrices. Its performance met all validation criteria, confirming its suitability for quantifying glyphosate and aminomethylphosphonic acid in different biological and experimental setups.

Conclusions: This method can offer a practical resource for applications in experimental research, medical diagnostics, quality control, and food safety.

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来源期刊
CiteScore
5.30
自引率
1.70%
发文量
21
审稿时长
10 weeks
期刊介绍: The Journal of Xenobiotics publishes original studies concerning the beneficial (pharmacology) and detrimental effects (toxicology) of xenobiotics in all organisms. A xenobiotic (“stranger to life”) is defined as a chemical that is not usually found at significant concentrations or expected to reside for long periods in organisms. In addition to man-made chemicals, natural products could also be of interest if they have potent biological properties, special medicinal properties or that a given organism is at risk of exposure in the environment. Topics dealing with abiotic- and biotic-based transformations in various media (xenobiochemistry) and environmental toxicology are also of interest. Areas of interests include the identification of key physical and chemical properties of molecules that predict biological effects and persistence in the environment; the molecular mode of action of xenobiotics; biochemical and physiological interactions leading to change in organism health; pathophysiological interactions of natural and synthetic chemicals; development of biochemical indicators including new “-omics” approaches to identify biomarkers of exposure or effects for xenobiotics.
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