Table 1 Recent materials for colorimetric sensing of inorganic water pollutions
Material
Heavy
metals
Analytical details
Water matrix
Organic tailored linkers
P(DHB-a-DHBDT) grafted
with PST probes [1]
Hg(II)
LOD: 10.6 ppb
River water;
Distilled
water
sulfo-rhodamine 101 with
cuprizone [19]
Cu(II)
LOD: 0.1 ppb
Groundwater;
Distilled
water
HCFI [20]
Cu(II)
LOD: 1 ppm;
LR: 0.1–10 ppm
Waste water
Heptamethine cyanine dye
[9]
Ag(I)
LOD: 3 ppb
Lake water;
Tap water;
River water
MPA derivatized RS [8]
Hg(II)
LOD: 0.29 ppb
Waste water;
Tap water;
Drinking
water
Nitro-functionalized Co(II)
based MOF [11]
Hg(II),
MnO 4
−
LOD: 800 ppb for Hg(II)
Distilled
water
PyDPP [21]
Hg(II), Cu
(II)
LOD: 5 ppb
Distilled
water
Tpy-QL; Tpy-BZ [7]
Fe(II), Fe
(III), Co(II)
and Hg(II)
LOD: Hg(II), Co(II), Fe(II), and
Fe(III) are calculated to
be 6.51, 0.34, 0.49, and 1.01 ppb;
Naked eye limit: 10, 25, 10, and
200 ppb for Fe(II), Fe(III), Co
(II), and Hg(II)
Tap water;
River water;
Ground water
Nanomaterials based platforms
HS-CH 2 -
6-GGGTGGGTGGGTGG
aptamer modified
oligonucleotide [22]
Pb(II); Hg
(II)
LOD: 100 ppb for Pb(II);
500 ppb for Hg(II)
Lake water;
Distilled
water
BSA-AuNCs and
L-Cys-AuNCs [17]
Hg(II)
LOD: 1.8 ppb
Distilled
water
PEG functionalized AgNPs
[15]
As(III)
LOD: 1 ppb
Distilled
water
Glucose capped CuNPs [16] Ag(I)
LOD: 10 ppm;
LR: 10–60 ppm
River water
amino-carbon dots and
AuNCs [23]
Cu(II); Pb
(II)
LOD: 100 ppb for Pb(II); 9.5 ppb
for Cu(II)
Distilled
water
Nitrogen-doped graphene
QDs [13]
Fe(III)
LOD = 132 ppb; LR = 88–
132 ppm
Distilled
water
captopril modified HgS/ZnS
core/shell QDs [14]
Cr(III)
LOD: 51 ppb
Distilled
water
(continued)
132
R. Jain et al.