Determination and characterization of metal nanoparticles in clams and oysters

摘要: Abstract With the extensive application of nanotechnology, metal nanoparticles (MNPs) have been widely used, thus are universally detected in environment. This has caused increasingly concerns due to their toxicity and potential health risks they pose humans. In this work, concentrations particle size distributions MNPs associated ionic species shellfish seafood (clams oysters) were investigated using single inductively coupled plasma mass spectrometry (sp-ICP-MS) (ICP-MS). The clam oyster tissues extracted via an alkaline digestion method with a recovery rate 95.9% (for gold (AuNPs)). Then total 41 elements measured two types seafood, which 20 selected for sp-ICP-MS analysis. results showed that 5 detectable clams (Y, La, Ce, Pr, Gd) oysters Nd). Size range 35–55 nm 30–65 nm, respectively. Nanoparticle ranged from 0.6 37.7 ng/g 4.2–19.7 ng/g, accounted 3.4%–50% 5.5%–46% content, Based on analysis, metals kinds evaluated by comparing Provisional Tolerable Weekly Intake (PTWI) limits recommended World Health Organization (WHO)/Food Agriculture (FAO). These provide important information about presence and, best our knowledge, is first time rare earth reported bivalve mollusc tissues.