DONGARE ET AL.
11
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3.9
|
Analytical applications of the proposed probe
MNTPZ in real a sample for I−
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To demonstrate the practical applications of the proposed method,
experiments were performed to determine the concentration of I− in
real sample by using standard addition method; water sample is col-
lected from a local region of campus filtered through a Whatman
No. 41 filter paper to remove suspended impurities. Similarly, urine
samples are obtained from the local hospital of verified healthy
unknown volunteers and patient. These three samples were spiked
with standard I− at different concentration levels and further diluted
with distilled water to obtain the proper concentration of sample solu-
tions within working linear range and analyzed with the proposed
method. The results are listed in Table 1 which is in good agreement
with the average recovery of the spiked sample which showed that,
probe MNTPZ used for determination of I− in a real sample.
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4
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CONCLUSIONS
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In conclusion, a simple and sensitive phenazine based fluorescent
and colorimetric probe MNTPZ has been developed for recognition of
Ag+ with a low detection limit in mixed aqueous solution. Probe
MNTPZ showed selectivity toward Ag+ in a 2:1 stoichiometric
manner, which induces a visible color change from yellow to orange
with a notable bathochromic shift elucidated by the change of ICT
band. Furthermore, the chemosensing ensemble probe MNTPZ+ Ag+
was used as a fluorescent probe for I− detection by means of metal
displacement approach with a detection limit 1.03 μmol/L in pres-
ence of coexisting anions. Moreover, probe MNTPZ+ Ag+ ensemble
exhibit good water solubility, biocompatibility and stability under a
wide pH physiological conditions thus the proposed probe MNTPZ
was successfully used for the determination of I− ion with satisfactory
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ACKNOWLEDGEMENTS
Authors are thankful to Shivraj College, Gadhinglaj; Department of
Chemistry, Shivaji University, Kolhapur and SAIF CSIR-CDRI, Luck-
now, India for providing all necessary infrastructural and instrumental
facility.
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