Table 3 comparison between different analytical techniques for the determination of NH4+ in water.

From: Modified electrode decorated with silver as a novel non-enzymatic sensor for the determination of ammonium in water

Technique

Chemistry

Linear Range (µM)

LOD (µM)

References

Modified SIAa (termed ABA)

OPAb-Sulfide with Formaldehyde

0.005–25

0.001

38

SFA -LWCCc

IPBd-Phenol

0.005–10

5.5 nM

39

Programmable flow Spectrophotometric

pH-indicator bromothymol blue

0.028–55.6

15 nM

40

LCe with fluorescence detection

OPA-Sulfide

0.625–10

330 nM

18

SWV-electrochemistry

Ag-PAAQ-MWCNT-CPE

5–100

0.03

This work

  1. aSIA: sequential injection analysis.
  2. bOPA: o-phthaldialdehyde.
  3. cSFA-LWCC: segmented flow analyzer-liquid waveguide capillary cell.
  4. dIPB: indophenol blue method.
  5. eLC: liquid chromatography.
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