摘要
本研究将圣女果和韭菜在不同浓度的2种农药中浸泡处理后,采取不同方法洗涤,通过手持式离子源与商用质谱仪联用检测果蔬表面的农药残留。结果表明:4种洗涤方式对圣女果和韭菜表面的阿特拉津或毒死蜱农药残留均有一定的洗涤效果,但不同农药、浓度和果蔬种类情形下的洗涤效果存在差异,并不存在一种效果最佳、且适用于不同果蔬表面农残的洗涤方法。在高浓度农药处理组中,洗洁精对圣女果的洗涤效果最好,而对韭菜的洗涤效果不稳定;在低浓度农药处理组中,圣女果更适合用盐水浸泡后冲洗,而韭菜更适合水洗。此外,本文还展示了手持离子源在日常果蔬表面农残检测方面的优越性,有望为食品安全、环境监测等领域提供低成本、简便且快速的检测方法,具有较高的实际应用价值。
In recent years,with the increasing concern of food safety and the continuous improvement of pesticide residue standards,the maximum allowable limits of pesticide residue have gradually been reduced.This has led to higher requirements for rapid and efficient detection of pesticide residues on the surface of fruits and vegetables.Mass spectrometry has the advantages of high sensitivity,specificity,and ability to detect multiple components.However,the use of traditional mass spectrometry can be challenging for novice users.Previous studies have mainly relied on bulky and expensive mass spectrometer or chromatograph,which require trained personnel to operate.By combining hand-held ion source with portable mass spectrometer,a low-cost and rapid on-site method for pesticide residue detection can be achieved,potentially enabling non-professionals to detect chemicals on-site without training.This study based on the combination of a hand-held ion source and a commercial mass spectrometer was expected to evaluate the effectiveness of different washing methods for removing pesticide residues from the surface of fruits and vegetables.The effects of different washing methods on the removal of pesticide residues were investigated for cherry tomatoes and leek treated with two different pesticide concentrations.The results showed that there was no universally optimal washing method applicable to different pesticide residues on the surfaces of different fruits and vegetables.The four washing methods explored in this study had certain effects on the removal of atrazine or dimethoate pesticide residues from cherry tomatoes and leek,but there were differences under different pesticide types,concentrations,and types of fruits and vegetables.Specifically,among the high-concentration pesticide-treated groups,washing with dishwashing detergent was found to be the most effective method for removing pesticide residues from cherry tomatoes,although it was not as effective for leek.For the low-concentration pesticide-treated groups,cherry
作者
南懿容
王逸冉
聂宗秀
NAN Yi-rong;WANG Yi-ran;NIE Zong-xiu(School of Environment and Natural Resources,Renmin University of China,Beijing 100872,China;CAS Key Laboratory of Analytical Chemistry for Living Biosystems,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《质谱学报》
EI
CAS
CSCD
北大核心
2023年第6期780-786,I0003,共8页
Journal of Chinese Mass Spectrometry Society
关键词
农残检测
手持离子源
质谱
pesticide residue detection
hand-held ion source
mass spectrometry
