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Sains Malaysiana 48(7)(2019): 1513–1518
http://dx.doi.org/10.17576/jsm-2019-4807-20
Reka Bentuk
Sensor Pendar Cahaya
Bintik Kuantum ZnCdSe untuk Mengesan
Racun Perosak
(Fluorescence Sensor Design for Pesticide
Detection using ZnCdSe Quantum Dots) NORHAYATI ABU
BAKAR*,
AKRAJAS
ALI
UMAR
& MUHAMAD MAT SALLEH Institute of Microengineering
and Nanoelectronics (IMEN), Universiti
Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia Diserahkan: 9 Januari
2019/Diterima: 3 April 2019 ABSTRACT The pesticides are widely used
in the agricultural sector to increase crop production. However,
pesticides are considered as harmful chemicals to human health,
animal, fish and may cause environmental damage including water
pollution. This paper reports a study on the development of a fluorescent
sensor system to detect pesticides in water using ZnCdSe
quantum dots (QDs)
thin film. An optical sensing system was set up, comprises of four
components: light source to excite pesticide, sensor chamber that
contains the sample of pesticide, fiber optic to drive light from
source to sensor chamber, and analyzer system. The dual arms fiber
optic probe is for excitation and emission light paths. A glass
surface probe is coated with ZnCdSe QDs
thin film and attached at the end of the probe arm. ZnCdSe
QDs
was synthesized at 5 min of growth time using the wet chemical process
at 350°C. The detection of pesticide was done by comparing photoluminescence
(PL)
spectra of the ZnCdSe thin film in deionized
water and then in the pesticide solution. The concentration of pesticide
solution was prepared in water at 2.5 μg/L
to 2500 μg/L. The sensing experiment showed that the PL
peak spectrum of ZnCdSe
thin film was dropped after dipped in the pesticide solutions compared
with PL peak of ZnCdSe
dipped in the water. The percentage drop of PL peak
was increasing with the increasing of pesticide concentrations and
linearly depends on pesticide concentrations. Keywords: Fluorescence; pesticide;
quantum dots; sensor design system ABSTRAK Racun perosak digunakan secara meluas dalam
sektor pertanian
bagi meningkatkan hasil pengeluaran tanaman. Namun demikian, racun perosak boleh memudaratkan
kesihatan manusia,
haiwan, ikan dan
menyebabkan pencemaran
alam sekitar terutamanya
pencemaran air. Kertas
ini melaporkan kajian pembangunan sistem sensor pendar cahaya untuk mengesan
kehadiran racun
perosak di dalam air dengan menggunakan filem nipis bintik
kuantum. Sistem
sensor pendar cahaya mempunyai
empat bahagian:
sumber cahaya untuk
menguja racun
perosak, kebuk sensor yang mengandungi sampel racun perosak, serat optik yang memandu cahaya daripada sumber ke kebuk sensor dan sistem analisis.
Penduga serat
optik dupleks berfungsi
menyalurkan sumber
cahaya penguja dan pancaran. Pada
bahagian hujung
serat optik terdapat
permukaan kaca
pada penduga yang dimendapkan dengan filem nipis bintik
kuantum ternari
ZnCdSe yang disintesis menggunakan kaedah kimia basah pada
suhu 350°C dan
masa pertumbuhan hablur
ZnCdSe adalah 5 min. Pengesanan racun perosak diukur dengan membandingkan spektrum pendar cahaya (PL) filem
nipis ZnCdSe
di dalam air dan di dalam larutan racun
perosak dengan
variasi kepekatan 2.5 hingga 2500 μg/L. Pengesanan dalam uji kaji ini
menunjukkan spektrum
PL
filem nipis ZnCdSe
menurun apabila
dicelupkan ke dalam
larutan racun
perosak berbanding dengan puncak spektrum
di dalam air. Peratus
perbezaan penurunan PL
meningkat dengan peningkatan kepekatan racun perosak dan
bergantung secara
linear kepada kepekatan racun perosak. Kata kunci: Bintik
kuantum; pendar
cahaya; racun perosak;
reka bentuk
sistem sensor RUJUKAN Bakar, N.A., Salleh, M.M., Umar, A.A. &
Yahaya, M. 2011. The
detection of pesticides in water using ZnCdSe
quantum dot films. Advances in Natural Sciences: Nanoscience
and Nanotechnology 2: 2. Cao,
X., Mu, L., Chen, M. & She, G. 2018. A facile fluorescent sensor
based on silicon nanowires for dithionite. Applied Surface Science
441(5): 388-393. Guo, L., Wang, M. & Cao, D. 2018. A Novel Zr-MOF
as fluorescence turn-on probe for real-time detecting H2S
gas and fingerprint identification. Small 14(17): 1703822.
Hai,
X., Wang, Y., Hao, X., Chen, X. &
Wang, J. 2018. Folic acid encapsulated graphene quantum dots for
ratiometric pH sensing and specific multicolor
imaging in living cells. Sensors and Actuators B: Chemical 268(9):
61-69. Kong,
C., Qin, L., Liu, J., Zhong, X., Zhu,
L. & Long, Y.T. 2010. Determination of dissolved oxygen based
on photoinduced electron transfer from
quantum dots to methyl viologen. Analytical
Methods 2(8): 1056-1062. Landry,
M.P., Hiroki, A., Chen, A.Y., Cao, J., Kottadiel,
V.I., Chio, L., Yang, D., Dong, J., Lu,
T.K. & Strano, M.S. 2017. Single-molecule detection of protein efflux
from microorganisms using fluorescent single-walled carbon nanotube
sensor arrays. Nature Nanotechnology 12(4): 368-377. Li, D.P., Wang, Z.Y.,
Cao, X.J., Wang, J.C., Cui, H.Z., Miao, J.Y. & Zhao, B.X. 2016.
A mitochondria-targeted fluorescent probe for ratiometric
detection of endogenous sulfur dioxide derivatives in cancer cells.
Chemical Communications 52(13): 2760-2763. Li, D., Sun, Y., Yu, S., Sun, C.,
Yu, H. & Xu, K. 2015. A single-loop fiber attenuated total reflection
sensor enhanced by silver nanoparticles for continuous glucose monitoring.
Sensors and Actuators B: Chemical 220(12): 1033-1042. Li, J. & Zhang, J.Z. 2009. Optical
properties and applications of hybrid semiconductor nanomaterials.
Coordination Chemistry Reviews 253(23-24): 3015-3041. Ling, X., Deng, Da-Wei., Zhong, Wen-Ying & Yu, Jun-Sheng. 2008. Quantitative determination
of pazufloxacin using water-soluble quantum
dots as fluorescent probes. Guang
Pu Xue Yu Guang
Pu Fen Xi = Guang Pu 28(6): 1317-1321.
Marlia Morsin,
Muhamad Mat Salleh, Akrajas
Ali Umar & Mohd Zainizan Sahdan.
2017. Gold nanoplates for a localized
surface plasmon resonance-based boric acid sensor. Sensors 17(5):
947. Marlia Morsin,
Muhamad Mat Salleh, Akrajas
Ali Umar & Muhammad Yahaya. 2014.
Localized surface plasmon resonance sensor
of gold nanoplates for detection of boric acid. Key Engineering
Materials 605(4): 356-359. Mohmed Labeb,
Abdel-Hamed Sakr, Moataz
Soliman, Tarek M. Abdel-Fattah & Shaker Ebrahim. 2018. Effect of capping agent on selectivity and
sensitivity of CdTe quantum dots optical
sensor for detection of mercury ions. Optical Materials 79(5):
331-335. Montgomery,
D.C., Runger, G.C. & Hubele,
N.F. 2003. Engineering Statistics. Ed. Ke-3. United States: John Wiley & Sons, Inc. Norhayati Abu
Bakar, Akrajas Ali Umar & Muhamad
Mat Salleh.
2010. Synthesis of CdTe-CdSe core-shell
quantum dots with luminescence in the red. Sains
Malaysiana 39(3): 473-477. Nur Adliha
Abdullah, Norhayati Abu Bakar, Shapter,
J.G., Muhamad Mat Salleh & Akrajas
Ali Umar. 2017. Synthesis of silver-platinum nanoferns
substrates used in surface-enhanced Raman Spectroscopy sensors to
detect creatinine. Advances in Natural Sciences: Nanoscience
and Nanotechnology 8(2): 025015. Peng, J., Li, J., Xu, W., Wang,
L., Su, D., Lean Teoh, C. & Chang, Y.T. 2018. Silica nanoparticle-enhanced
fluorescent sensor array for heavy metal ions detection in colloid
solution. Analytical Chemistry 90(3): 1628-1634. Rifat, A.A., Mahdiraji,
G.A., Sua Yong Meng,
Ahmed Rajib, Shee, Y.G. & Mahamd Adikan, F.R. 2016. Highly
sensitive multi-core flat fiber surface plasmon
resonance refractive index sensor. Optics Express 24(3):
2485-2495. Sikarwar, S. & Yadav, B.C. 2015. Opto-electronic humidity sensor: A review. Sensors and
Actuators A: Physical 233(9): 54-70. Tosi, S., Costa, C., Vesco, U., Quaglia, G. & Guido,
G. 2018. A 3-year survey of Italian honey bee-collected pollen reveals
widespread contamination by agricultural pesticides. Science
of the Total Environment 615(February): 208-218. Vivi Fauzia,
Nurlely, Cuk
Imawan, Ni Made Manik Savitri Narayani & Anita Eka Putri. 2018. A localized surface
plasmon resonance enhanced dye-based biosensor
for formaldehyde detection. Sensors and Actuators B: Chemical
257(3): 1128-1133. Wu, X., Song, Y., Yan, X., Zhu,
C., Ma, Y., Du, D. & Lin, Y. 2017. Carbon quantum dots as fluorescence
resonance energy transfer sensors for organophosphate pesticides
determination. Biosensors and Bioelectronics 94(9): 292-297.
Yan, X., Li, H., Han, X. & Su,
X. 2015. A ratiometric fluorescent quantum
dots based biosensor for organophosphorus pesticides detection by
inner-filter effect. Biosensors and Bioelectronics 74(12):
277-283. Zhang, P., Tian, Y., Liu, H., Ren,
J., Wang, H., Zeng, R., Long, Y. & Chen, J. 2018. In vivo
imaging of hepatocellular nitric oxide using a hepatocyte-targeting
fluorescent sensor. Chemical Communications 54(52): 7231-7234.
Zhou, Y., Zhao, H., Ma, D. &
Rosei, F. 2018. Harnessing the properties of colloidal quantum
dots in luminescent solar concentrators. Chemical Society Reviews
47(15): 5866-5890. *Pengarang untuk surat-menyurat; email: norhayati.ab@ukm.edu.my
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