A wireless and sensitive sensing detection of polycyclic aromatic hydrocarbons using humic acid-coated magnetic Fe3O4 nanoparticles as signal-amplifying tags

Theory, Instrumentation and Applications of Magnetoelastic Resonance Sensors: A Review

“…This led to substantial improvement in the limit of detection with a value of 10 cells/mL. This strategy of using modified magnetic nanoparticles has also been used for the detection of polycyclic aromatic hydrocarbons (PAHs), with anthracene as the model target [ 50 ].…”

Aminocalix[4]arene monolayers as magnetoelastic sensor sensing elements for selective detection of benzo[a]pyrene

“…14 The development and applications of wireless, passive, and remote-query magnetoelastic sensors have been reported over the past several years. [15][16][17][18][19][20][21][22][23][24] The sensor is made of amorphous ferromagnetic alloys composed of iron, nickel, molybdenum and boron. In response to a time-varying magnetic eld, the magnetoelastic sensor mechanically vibrates at a characteristic resonance frequency, generating a magnetic ux that can be remotely detected using a pickup coil.…”

“…Various applications of the magnetoelastic sensor have been reported, including sensors for remote-query monitoring of gastric pH, 16 glucose, 17,18 organophosphorus pesticides, 19 microorganisms [20][21][22][23] and PAHs. 24 The small sensor size (common sensor lengths are a few mm to a few cm) and low material cost (the material is purchased in ribbon form at a cost of $$200/km) make it suitable for in site analysis with mass samples where disposable sensors are of the utmost utility.…”

Sensitive immunosensor for benzo[a]pyrene detection based on dual amplification strategy of PAMAM dendrimer and amino-modified methylene blue/SiO2 core–shell nanoparticles

“…PAHs can be released from natural processes and human activities during the incomplete burning of oil, coal and gas (Beloglazova et al, 2008;Lin et al, 2010). Although PAHs are mixtures, BaP makes a consistent contribution to the total carcinogenic activity of PAHs (Piñeiro-Iglesias et al, 2004).…”

“…Based on the high specific molecular recognition of the immunoreaction, immunosensors have been widely applied in many fields including clinical diagnostics (Kumbhat et al, 2010;Lin et al, 2010), environmental control (Long et al, 2008), process monitoring (Nassef et al, 2008) and food safety test (Tang et al, 2010). Compared with conventional bioanalytical methods such as enzyme-linked immunosorbent assay (ELISA) and immunoradiometric assay, novel immunosensors based on surface plasma resonance (SPR) (Kumbhat et al, 2010;Scarano et al, 2010), piezoelectric quartz crystal (Tan et al, 2010), chemiluminescence (Jie et al, 2009) and electrochemistry Kim et al, 2010;Malhotra et al, 2010) have got new development in recent decades.…”