A novel analytical system with a capacitively coupled plasma microtorch and a gold filament microcollector for the determination of total Hg in water by cold vapour atomic emission spectrometry

Analytical strategies of sample preparation for the determination of mercury in food matrices — A review

“…This phenomenon usually generates selective procedures because mercury is the only species absorbed if gases acids are removed. Preconcentration using mercury amalgamation in gold trap has been applied to the determination of the element in fish tissues [126], water [127] and biological matrices [128].…”

Sono-induced cold vapour generation interfaced with capacitively coupled plasma microtorch optical emission spectrometry: analytical characterization and comparison with atomic fluorescence spectrometry

“…These considerations explain why the optimum value of 100 mL min À1 Ar ow rate established in this experiment is lower than that previously reported (200 ml min À1 ) for the procedure using the reduction with SnCl 2 -HCl system without sonication, which does not involve solution heating. 30 The optimal operation power was found to be 10 W. The decrease of the emission signal as the power increases, while there is efficient removal of water vapour, demonstrates that the supplemental energy provided to the discharge results in increasing plasma volume rather than increasing the excitation efficiency of the analyte atoms.…”

“…30 Thus, the entrance of water droplets into plasma requires supplemental energy to ensure discharge stability.…”

Analytical characterization of a method for mercury determination in food using cold vapour capacitively coupled plasma microtorch optical emission spectrometry – compliance with European legislation requirements

“…This equipment was used for the determination of As and Sb aer hydride generation in biodegradable/non-biodegradable materials and soil, simultaneous multielemental analysis of liquid microsamples and Hg determination aer chemical cold vapour generation in biodegradable/non-biodegradable materials, water, soil and sh (CV-mCCP-OES). [24][25][26][27][28][29][30] This paper relates on the analytical characterization of a high-sensitive and low-cost method for Hg determination in chicken meat, bread, rice, different vegetables and fruits using the miniaturized CV-mCCP-OES system with Hg preconcentration. The novelty compared to the previous approach consists of the use of on-line Hg preconcentration in order to improve the detection limit, thus allowing Hg determination in foods other than sh.…”