PMID- 38500611
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20240320
IS  - 2046-2069 (Electronic)
IS  - 2046-2069 (Linking)
VI  - 14
IP  - 13
DP  - 2024 Mar 14
TI  - Highly specific colorimetric detection based on aggregation of l-cysteine 
      functionalized gold nanoparticles for cypermethrin in water samples.
PG  - 9175-9183
LID - 10.1039/d3ra07626a [doi]
AB  - A fast, simple, and selective colorimetric assay for quantifying cypermethrin in 
      water samples is proposed using l-cysteine functionalized gold nanoparticles 
      (AuNPs@Cyst). Cypermethrin is hydrolyzed by potassium hydroxide to obtain 
      hydrolyzed cypermethrin in the form of 3-phenoxybenzaldehyde by-product (HCy). 
      The detection strategy is based on the aggregation of AuNPs@Cyst caused by 
      hydrogen-bonding recognition between the aldehyde group of HCy and the amine 
      group of l-cysteine on the surface of AuNPs@Cyst. As a result, in the presence of 
      HCy under optimal pH 7, AuNPs@Cyst aggregates within 7 min, exhibiting a distinct 
      color change from red to blue-gray, which can be evaluated with the naked eye and 
      UV-visible spectrophotometry. From FE-TEM image, the stable and spherical 
      AuNPs@Cyst had an average size of 13.8 +/- 1.6 nm, and from zeta potential 
      analysis, the charge of AuNPs@Cyst was -25.04 +/- 1.66 mV. The surface plasmon 
      resonance band of dispersed AuNPs@Cyst was red shifted from 525 nm to 634 nm when 
      AuNPs@Cyst was aggregated. The absorbance ratio (A(634)/A(525)) was linearly 
      related to cypermethrin concentrations from 0.5 to 13.0 mg L(-1). The limit of 
      detection was 0.2 mg L(-1) and precision, expressed as relative standard 
      deviations (RSDs), ranged from 1.9 to 7.3%. In the presence of interfering 
      pesticides (carbaryl, ethion, profenofos and abamectin), only cypermethrin 
      produced a significantly different response, confirming the selectivity of 
      AuNPs@Cyst. Finally, AuNPs@Cyst was applied to determine cypermethrin in water 
      samples, achieving very satisfied recoveries (>98.6%) and RSDs lower than 6.1%.
CI  - This journal is (c) The Royal Society of Chemistry.
FAU - Rujiralai, Thitima
AU  - Rujiralai T
AUID- ORCID: 0000-0003-0891-0853
AD  - Center of Excellence for Innovation in Chemistry and Division of Physical 
      Science, Faculty of Science, Prince of Songkla University Hat Yai Songkhla 90110 
      Thailand thitima.r@psu.ac.th.
AD  - Analytical Chemistry and Environment Research Unit, Division of Science, Faculty 
      of Science and Technology, Prince of Songkla University Pattani 94000 Thailand.
FAU - Leelaharat, Nitchakarn
AU  - Leelaharat N
AD  - Center of Excellence for Innovation in Chemistry and Division of Physical 
      Science, Faculty of Science, Prince of Songkla University Hat Yai Songkhla 90110 
      Thailand thitima.r@psu.ac.th.
AD  - Analytical Chemistry and Environment Research Unit, Division of Science, Faculty 
      of Science and Technology, Prince of Songkla University Pattani 94000 Thailand.
FAU - Cheewasedtham, Wilairat
AU  - Cheewasedtham W
AUID- ORCID: 0000-0003-2569-0282
AD  - Analytical Chemistry and Environment Research Unit, Division of Science, Faculty 
      of Science and Technology, Prince of Songkla University Pattani 94000 Thailand.
LA  - eng
PT  - Journal Article
DEP - 20240318
PL  - England
TA  - RSC Adv
JT  - RSC advances
JID - 101581657
PMC - PMC10946417
COIS- There are no conflicts to declare.
EDAT- 2024/03/19 06:44
MHDA- 2024/03/19 06:45
PMCR- 2024/03/18
CRDT- 2024/03/19 03:37
PHST- 2023/11/08 00:00 [received]
PHST- 2024/02/16 00:00 [accepted]
PHST- 2024/03/19 06:45 [medline]
PHST- 2024/03/19 06:44 [pubmed]
PHST- 2024/03/19 03:37 [entrez]
PHST- 2024/03/18 00:00 [pmc-release]
AID - d3ra07626a [pii]
AID - 10.1039/d3ra07626a [doi]
PST - epublish
SO  - RSC Adv. 2024 Mar 18;14(13):9175-9183. doi: 10.1039/d3ra07626a. eCollection 2024 
      Mar 14.