Ultrasound assisted extraction for the determination of mercury in sediment samples employing cold vapour atomic absorption spectrometry

Abstract

An extraction procedure involving ultrasound assisted radiation was proposed for the determination of mercury in river sediment samples using cold vapour atomic absorption spectrometry (CV AAS).

Traditional Calibration Methods in Atomic Spectrometry and New Calibration Strategies for Inductively Coupled Plasma Mass Spectrometry

“…The EC method has been effective in several analytical applications involving elemental determination in different types of the matrices, such as crude oils (Trevelin et al, 2016 ; Sugiyama and Williams-Jones, 2018 ), diesel oil (Nora et al, 2017 ), biodiesel (Barros et al, 2017 ), iron supplements (Barbosa et al, 2015 ), vinegar alcohol (Silva Junior et al, 2015 ), sediment (Leao et al, 2016b ), milk (Oliveira et al, 2017 ), canned foods (Leao et al, 2016a ), seawater, mineral water, tap water, cachaça, human blood (Papai et al, 2017 ), among others. In these applications, acid digestion (Barbosa et al, 2015 ; Leao et al, 2016a ; Sugiyama and Williams-Jones, 2018 ), dry decomposition (Nora et al, 2017 ), extraction procedures (Silva Junior et al, 2015 ; Leao et al, 2016b ; Sánchez et al, 2016 ; Trevelin et al, 2016 ; Barros et al, 2017 ; Papai et al, 2017 ; Zeiner et al, 2018 ), and emulsion formation (Oliveira et al, 2017 ) were used for sample preparation. Table 1 shows a summary and additional details on sample preparation procedures used in combination with EC, as well as with MMC.…”

Optimasi Digesti Asam Pada Analisis Merkuri (Hg) Dalam Sedimen Dengan Menggunakan Teknik Vapor Generation Accessory-Atomic Absorption Spectrophotometer (VGA-AAS)

“…Banyak campuran asam yang biasa digunakan untuk digesti sampel tanah, seperti HNO3, HNO3/H2SO4, HNO3/HCl, seringkali untuk meningkatkan kemampuan oksidasi reagen ditambahkan dengan oksidator kuat seperti KMnO4, HClO4, dan H2O2, karena digesti dengan hanya satu asam telah menunjukkan % recovery yang tidak sempurna [9]. Selain penggunaan asam, destruksi sampel sedimen bisa juga menggunakan tiourea [16]. Pada penelitian ini reagen yang digunakan adalah HNO3, akua regia, dan campuran HNO3:H2O2.…”