检出限
拉曼散射
银纳米粒子
人类健康
杀虫剂
化学
纳米颗粒
环境化学
材料科学
拉曼光谱
纳米技术
色谱法
农学
生物
光学
物理
医学
环境卫生
作者
Duong Thanh Nguyen,Linh Phuong Nguyen,Phuong Duc Luu,Thai Quoc Vu,Hoa Quynh Nguyen,Tan Phat Dao,Tri Nhut Pham,Trần Thị Hoàng Yến
标识
DOI:10.1016/j.saa.2022.121117
摘要
Potato is one of the most important food crops worldwide in terms of human consumption. However, potato farmers employ a variety of pesticides to protect crops from harmful insects and illnesses, and difenoconazole is a commonly used one that has severe effects on human health and the environment. Therefore, detecting difenoconazole quickly and correctly is critical. In this work, we fabricated AgNPs/cicada wing substrates using natural cicada segments, decorated with silver nanoparticles for surface-enhanced Raman scattering (SERS) measurements to detect trace amounts of difenoconazole in potatoes. Results indicated that a linear relationship with the coefficient of detection (R2) of 0.987 and the detection limit (LOD) of 0.016 ppm was observed by targeting a distinctive peak at 808 cm-1 and logarithmic difenoconazole concentrations of 0.1 to 100 ppm. In addition, difenoconazole LODs in potatoes were 63 μg/kg, lower than those specified by the EU (0.1 mg/kg) and Vietnam (4 mg/kg) utilizing this new technique. Therefore, this proposed SERS method could be used to detect difenoconazole in potatoes at trace levels.
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