方案摘要
方案下载| 应用领域 | 环保 |
| 检测样本 | 废水 |
| 检测项目 | 有机污染物>酸类化合物 |
| 参考标准 | 国家标准 |
Full scan in negative mode LC-MS acquisition on the Exactive LC-MS system with Orbitrap technology is suitable for quantification of PFAAs at low concentrations ranging from 0.1 μg/kg to 50 μg/kg in complex matrix extracts. No tuning or fragment determination is required and there is less background with high-resolution, accurate mass acquisition.
Perfluoroalkyl acids (PFAAs) are global pollutants andhave been shown to bioaccumulate in the food chain.PFAAs have been detected in livers of fish, birds, and marine mammals from Greenland and the Faroe Islands.1Biomagnification of perfluorooctane sulfonate (PFOS), the
predominant fluorochemical detected, was observed along the marine food chain (Figure 1).
The performance of the Thermo Scientific Exactivemass spectrometer equipped with Orbitrap™ technology has been evaluated for the analysis of ten selected perfluoroalkyl acids in pooled extracts from environmental samples. The following PFAAs were analyzed: perfluoroheptanoic acid (PFHpA), perfluorooctanoic acid (PFOA), perfluorononanoic acid (PFNA), perfluorodecanoic acid (PFDA), perfluoroundecanoic acid (PFUnA), perfluorododecanoic acid (PFDoA), perfluorotridecanoate acid (PFTrA), perfluorohexane
sulfonate (PFHxS), perfluorooctane sulfonate (PFOS) and perfluorooctane sulfonamide (PFOSA) (Figure 2).
The sample extracts were chosen to represent both high and low levels of the analytes in complex matrices. Low levels were expected in liver extracts from Antarctic
seals. Medium and high levels were expected in Arctic seals, influent water, and sludge from a wastewater treatment plant. The performance has been evaluated in terms of linearity (range 0.1-50 μg/kg), specificity, and sensitivity.
高压离子色谱Inuvion快速测定自来水中的常见阴离子
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Thermo Fisher Scientific iCAP TQe ICP-MS/MS测定土壤和沉积物多种元素
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