التفاصيل البيبلوغرافية
| العنوان: |
Simple multi-residue analysis of persistent organic pollutants and molecular tracers in atmospheric samples |
| المؤلفون: |
Minas Iakovides, Jean Sciare, Nikos Mihalopoulos |
| المصدر: |
MethodsX, Vol 10, Iss , Pp 102224- (2023) |
| بيانات النشر: |
Elsevier, 2023. |
| سنة النشر: |
2023 |
| المجموعة: |
LCC:Science |
| مصطلحات موضوعية: |
Simple multi-residue analysis of persistent organic pollutants and molecular tracers in atmospheric samples., Science |
| الوصف: |
We present a simple, selective and sensitive analytical method to quantitatively determine a wide range of halogenated persistent organic pollutants and molecular tracers in atmospheric samples. Identification and quantification was carried out by high-resolution gas chromatography, hyphenated with low-resolution mass spectrometry operating in electron impact (EI) and electron capture negative ionization (ECNI) mode. Optimization on a number of instrumental parameters was conducted to obtain ultra-trace detection limits, in the range of few fg/m3 for organohalogen compounds. Repeatability and reproducibility of the method was thoroughly evaluated. The analysis was validated with standard reference materials and successfully applied to actual atmospheric samples. The proposed multi-residue method provides a precise, affordable and practical procedure of sample analysis for environmental research laboratories with conventional instrumentation on a routine basis. • A simple combination of alumina, florisil and silica gel adsorbents was applied to sufficiently isolate polychlorinated biphenyls, organochlorine pesticides, polycyclic aromatic hydrocarbons, long chain n-alkanes, hopanes and steranes. • Full elution was achieved in two successive fractions, using small volumes of n-hexane and n-hexane/dichloromethane to recover all target substances. • To maximize analytical response, optimization was applied for three operating parameters in ECNI mode: i) ion source temperature; ii) emission current; and iii) electron energy. |
| نوع الوثيقة: |
article |
| وصف الملف: |
electronic resource |
| اللغة: |
English |
| تدمد: |
2215-0161 |
| Relation: |
http://www.sciencedirect.com/science/article/pii/S2215016123002224; https://doaj.org/toc/2215-0161 |
| DOI: |
10.1016/j.mex.2023.102224 |
| URL الوصول: |
https://doaj.org/article/76d4ea8eedb847dbbdfb6f739420791d |
| رقم الانضمام: |
edsdoj.76d4ea8eedb847dbbdfb6f739420791d |
| قاعدة البيانات: |
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