Dufour Aurélie, Migon Christophe
Sorbonne Universités, UPMC Université Paris 06, UMR 7093, LOV, Observatoire Océanologique, F06230, Villefranche sur mer, France.
CNRS, UMR 7093, LOV, Observatoire Océanologique, F06230, Villefranche sur mer, France.
MethodsX. 2017 Jun 13;4:191-198. doi: 10.1016/j.mex.2017.05.002. eCollection 2017.
Several protocols using different treatments (various mixtures of acids at different temperatures for mineralisation) or using several analysis instrumentations were tested with the aim to define the method allowing the analysis of some groups of elements. This study proposes a protocol of sample treatment and analysis permitting in a single batch the determination of 16 elements (Al, As, Ba, Cd, Co, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, Ti, V and Zn) with different chemical features such as volatile or refractory trace elements. This method is specifically adapted to chemical matrices found in unpolluted to moderately polluted atmospheric aerosol samples. Aerosol samples were digested using a mixture aqua regia/hydrofluoric acid at 130 °C during 2 h, and were then analysed with specifically tuned inductively coupled plasma-optical emission spectrometry. •Reduction of costs: use of hot block, use of inductively coupled plasma-optical emission spectrometry (ICP-OES), easiness, reliability and adaptability to routine analysis•Digestion of up to 54 samples at the same time in 2 h and low amount of material required, only 10 mg is necessary.•Better accordance with Occupational Health and Safety requirements (reduced use of acids, in particular HF, no use of high-pressure Teflon bombs).
为了确定能够分析某些元素组的方法，对几种使用不同处理方式（不同温度下的各种酸混合物用于矿化）或使用多种分析仪器的方案进行了测试。本研究提出了一种样品处理和分析方案，该方案能够在一批次中同时测定16种具有不同化学特性（如挥发性或难熔微量元素）的元素（铝、砷、钡、镉、钴、铜、铁、钾、镁、锰、钠、镍、铅、钛、钒和锌）。该方法特别适用于未受污染至中度污染的大气气溶胶样品中的化学基质。气溶胶样品在130℃下用王水/氢氟酸混合物消解2小时，然后用专门调谐的电感耦合等离子体发射光谱仪进行分析。•降低成本：使用热块、使用电感耦合等离子体发射光谱仪（ICP-OES）、操作简便、可靠性高且适用于常规分析•2小时内可同时消解多达54个样品，所需材料量少，仅需10毫克。•更符合职业健康与安全要求（减少酸的使用，特别是氢氟酸，不使用高压聚四氟乙烯消解罐）。
