Determination of Residues of Five Carbamate Pesticides in Spinach by QuEChERS Coupled with UPLC-MS/MS

被引：0
|
作者：
Feng W. [1 ]
Luo H. [1 ]
Huang Z. [1 ]
机构：
[1] Guangzhou Inspection and Testing Certification Group Co, Guangzhou
来源：
Journal of Food Science and Technology (China) | 2019年 / 37卷 / 03期
关键词：
Carbamate; Pesticide residue; QuEChERS; Spinach; UPLC-MS/MS;
D O I：
10.3969/j.issn.2095-6002.2019.03.013
中图分类号：
学科分类号：
摘要：
An ultra performance liquid chromatography-tandem mass spectrometry (UPLC- MS /MS) method for the determination of five carbamate pesticides in spinach was established. Samples were homogenized and extracted by ultrasonic with acetonitrile-water(50:50 in volume ratio), and then salted out and purified with primary secondary amine sorbent. Under the electrospray ionization (ESI+mode), data of the target parent ions and product ions were collected with mass spectrometric multi-response monitoring scanning detection. The matrix calibration curves of five carbamate pesticides showed the good linearity within the concentrations of 0.1-20.0 μg/L with the good correlation coefficient (r>0.999 1). The average recoveries of three spiked levels ranged from 91.0%-101.0%, while the limits of detection and limits of quantitation were 0.10-0.20 μg/kg and 0.25-0.50 μg/kg, respectively. The relative standard deviations were 2.15%-5.57%. This method has good sensitivity and high precision, which is suitable for practical determination of five carbamate pesticides in spinach. © 2019, Editorial Department of Journal of Food Science and Technology. All right reserved.
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页码：100 / 104
页数：4
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