This study was actualized for the simultaneous determination of possible thirty VOCs presented in drinking waters in Turkey by direct injection to purge and trap (PT) gas chromatography-mass spectrometry (GC-MS). It consists of selectivity, linearity, the limit of detection (LOD) and limit of quantification (LOQ), accuracy (recovery), precision, trueness, and measurement uncertainty studies. In linearity, the values of correlation coefficients ( r 2 ) for the matrix-matched calibration curves were higher than 0.998 for all analytes. This method showed high sensitivity (LOD: 0.011–0.040 μg/L; LOQ: 0.035–0.133 μg/L), quite sufficient recovery (82.6% to 103.1%) for accuracy, and acceptable precision (intra-day recovery: 81.5–104.4%, relative standard deviation (RSD): 1.04–9.81%; inter-day recovery: 92.6–104.1%, RSD: 1.15–7.52%). All the recovery and RSD values obtained below 10% are evaluated agreeable in point of the AOAC and EURACHEM/CITAC validation guidelines. The recovery percentages of all analytes in CRM changed between 80.3 and 109.9% and the RSD (%) values for each analyte obtained below 10%. The proficiency test results were satisfactory and comparable (z score less than or equal to 2.0 is no questionable or satisfactory) to those obtained by other laboratories participating in the round. The calculated percentage of relative uncertainties for each analyte changed from 2.99 to 10.10% and the major contribution to uncertainty budget arises from the calibration curve and repeatability. Therefore, the results demonstrate that this method is applicable for the determination of possible thirty VOCs in drinking waters in routine analysis for custom laboratories.

中文翻译：

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土耳其销售的瓶装饮用水中聚乙烯中可能存在的 30 种挥发性有机化合物 (VOC) 的方法验证和测量不确定度

本研究旨在通过直接进样吹扫捕集 (PT) 气相色谱-质谱联用 (GC-MS) 同时测定土耳其饮用水中可能存在的 30 种 VOC。它包括选择性、线性、检测限 (LOD) 和定量限 (LOQ)、准确度（回收率）、精密度、正确度和测量不确定度研究。在线性方面，所有分析物的基质匹配校准曲线的相关系数 (r 2 ) 值均高于 0.998。该方法显示出高灵敏度（LOD：0.011–0.040 μg/L；LOQ：0.035–0.133 μg/L）、准确度相当高的回收率（82.6% 至 103.1%）和可接受的精密度（日内回收率：81.5–104.4） %，相对标准偏差 (RSD)：1.04–9.81%；日间回收率：92.6–104.1%，RSD：1.15–7.52%）。根据 AOAC 和 EURACHEM/CITAC 验证指南，所有获得的回收率和 RSD 值均低于 10%，评估结果为合格。CRM 中所有分析物的回收率在 80.3% 和 109.9% 之间变化，获得的每个分析物的 RSD (%) 值都低于 10%。能力验证结果令人满意，并且与参与该轮次的其他实验室获得的结果具有可比性（z 分数小于或等于 2.0 表示没有问题或令人满意）。每种分析物的相对不确定度的计算百分比从 2.99% 变为 10.10%，对不确定度预算的主要贡献来自校准曲线和可重复性。因此，结果表明该方法适用于在定制实验室的常规分析中测定饮用水中可能的 30 种 VOC。