Determination of mercury in phosphate fertilizers by cold vapor atomic absorption spectrometry

Fluorescent carbon dots for auramine O determination and logic gate operation

“…49 Typical examples may be the determination of cancerogenic ions, such as Hg 2+ , F -, 50 ClO - [1][2][3]. Auramine O (AO), a banned hazardous dye for food and medicine, is 51 usually added into medicinal herbs to improve their appearance [4].…”

Atomic spectrometry update. Review of advances in the analysis of metals, chemicals and functional materials

“…However, the quantication of Hg in phosphate matrices is difficult because Hg(II) ions form strong complexes with phosphorus compounds. The development and optimization of a slurry sampling technique to overcome these issues for the determination of Hg in phosphate fertilizers by CV-AAS was presented by de Jesus et al 116 Solid fertilizer samples were added to a solution of lanthanum chloride, hydrochloric acid, thiourea and hydrogen peroxide. The mixture was sonicated at room temperature to form a slurry, from which a known volume was transferred to the chemical vapour reaction cell.…”

Streptavidin and gold nanoparticles-based dual signal amplification for sensitive magnetoelastic sensing of mercury using a specific aptamer probe

“…Therefore, the monitoring of Hg 2+ in environment becomes an increasing demand. Several techniques for mercury assay, such as cold vapor atomic fluorescence spectrometry [4], atomic absorption spectrometry [5,6] and ICP-MS [7], have been reported. Some of these methods are either not sensitive enough for mercury(II) detection, or require costly and sophisticated apparatus.…”