Simultaneous detection of Cd2+ and Pb2+ by differential pulse anodic stripping voltammetry: Use of highly efficient novel Ag0(NPs) decorated silane grafted bentonite material

Recent advances in the modification of electrodes for trace metal analysis: a review

“…In addition to the widely used electrodeposition, reduction, and hydrothermal methods, the synthesis of NPs from environmentally friendly sources (i.e., waste and plant extracts as well as mango seed kernels) has been reported, 23,[119][120][121][122]125,127 and will be further discussed in section 7.…”

“…A wide range of green modifiers has been employed, including biopolymers, 35,37,61,69,[71][72][73]87,89,92,123,124,175,186,187,197,[201][202][203][204][205] plant extracts, 23,66,104,[120][121][122]125,127,313 natural products, 126,219,[314][315][316][317][318] biomass, 157,289,319 and DNA. 293,320,321 It is important to emphasize that all the different green modifiers have been either added to or combined with other modifiers to achieve the desired electroanalytical performance of the newly developed electrodes through the synergistic effect.…”

“…Five main types of NMs, i.e. , graphene, graphene oxide (GO) and reduced graphene oxide (rGO), 22–92 NPs, 23–25,27,31,56,57,59,64,67,70,83,86,87,93–138 single and multiwalled carbon nanotubes (SWCNTs and MWCNTs), 32,83,89,98,99,101,113,129,133,139–162 nanosheets, 34,85,107,111,139,162–166 and nanofibers, 167–169 have been employed in the modification of the electrodes used in the determination of heavy metals. Nanocubes, nanoflakes, nanospheres, and nanodiamonds 75,170–175 are among the other types of NMs used in the modification of the electrodes.…”

“…Metals ( i.e. , Ag, Au, Bi, Pd, Pt, Pb, and Sn), 23–25,56,57,59,64,70,83,86,87,93–95,97–99,101,102,104–106,108,110,113–115,117,120,121,123,125–127,129,132,134,138 metal oxides and mixed metal oxides ( i.e. , SiO 2 , SnO 2 , Fe 3 O 4 , Mn 3 O 4 , Cu 2 O/ZnO, FeAl 2 O 4 , MgFe 2 O 4 , ZnFe 2 O 4 , and NiFe 2 O 4 ) 27,31,67,96,100,103,109,112,118,122,124,130,131,133,135–137,188,197,198 are the most commonly used NPs in the modification of the electrodes.…”

A colloidal gold immunoassay strip assay for cadmium detection in oilfield chemicals

“…In GB/T 29170 (2012), China established that atomic absorption spectrometry could be used to detect Cd 2+ in oilfield chemicals. In addition to this method, atomic fluorescence spectrometry, 7,8 inductively coupled plasma mass spectrometry (ICP-MS), 4,9,10 and anodic stripping voltammetry [11][12][13][14] are common Cd 2+ detection methods. 15 However, these methods require time-consuming digestion steps with strong acids, sophisticated instruments, and strict experimental environments.…”