Closed-vessel miniaturised microwave-assisted EDTA extraction to determine trace metals in plant materials

Plant uptake of metals, transfer factors and prediction model for two contaminated regions of Kosovo

“…As this pseudo total content is insufficient to determine ecotoxicologically relevant heavy metals, the exchangeable and mobile fractions of heavy metals (potentially plant available and easily leachable) were assessed by extraction with NH 4 OAc‐EDTA (ammonium acetate and ethylenediaminetetraacetic acid) and 1M NH 4 NO 3 ( DIN ISO 19730:2009 , 2009) according to German regulation ( BBodSchV , 1999). The total content of metals in plants was extracted using MAE (5 mL H 2 O, 5 mL HNO 3 and 3 mL H 2 O 2 ) ( Czarnecki and Düring , 2014).…”

A rapid microwave-assisted acid extraction method based on the use of diluted HNO3-H2O2followed by ICP-MS analysis for simultaneous determination of trace elements in coal samples

“…In addition, Wang et al [10,21] reported elemental recoveries of 77-186% when coal samples were digested using microwave and concentrated acidic solutions (HNO 3 -H 2 O 2 and HNO 3 only) without HF, HCl and HClO 4 addition. Due to the growing interest towards the implementation of 'Green Chemistry' principles, several studies revealed the use of diluted inorganic acids for extraction of trace elements in solid matrices and recoveries of 89-117% were attained [22][23][24][25][26][27][28][29]. The current study aimed at developing a sample preparation method based on the use of diluted HNO 3 -H 2 O 2 mixture and microwave radiation for rapid extraction of trace elements in coal samples prior to ICP-MS determination.…”

An efficient microwave-assisted chelation (MWAC) post-synthetic modification method to produce hierarchical Y zeolites

“…Microwave (MW) irradiation shows high efficiency in many chemical processes, such as the metal extraction from soils and plants [18,19]. In zeolite chemistry, synthesis of zeolites under MW conditions has been proven to be more energy-efficient and time-saving than the conven-tional synthesis under the hydrostatic HT conditions [20].…”