Indigenously synthesized nanocomposite materials: Use of nanocomposite as novel sensing platform for trace detection of Pb2+

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

“…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.…”

“…In the last five years, several research groups have continued to explore the inclusion of various environmentally friendly (green) modifiers in the development of new electrodes for trace metal analysis. 23,35,37,61,66,69,71–73,87,89,92,104,110,120–127,157,175,186,187,197,201–205,219,289,293,313–321 Table S6 in the ESI† summarizes the main findings of the research studies published in the last five years reporting on the use of different green modifiers for various types of electrodes employed in the determination of trace heavy metals.…”

Features of Arsenic Distribution in the Soils of Potash Mines

“…Arsenic is a chemical element of the first class of environmental hazard with high toxicity and carcinogenic properties that pose a serious risk to humans [2,3]. Arsenic can enter the human body through the consumption of arsenic-contaminated water or agricultural products grown on arsenic-contaminated soils.…”