王爽1; 王喆2; 侯可勇1; 李海洋1
Source Publication分析化学
Funding Project[National Natural Science Foundation of China] ; [National Special Fund] ; [National Science & Technology Pillar Program of China]
AbstractA thermal desorption low temperature plasma (TD-LTP) ionization source was developed for the direct, rapid and sensitive detection of pesticides by mass spectrometry without complex sample pretreatment. A thermal desorption sampler was added in front of the plasma generator, and the analyte was collected on a polytetrafluoroethylene (PTFE) swab and desorbed into gas molecules, and then gas molecules were transported to the plasma generator by carrier gas to be ionized. The utilization of thermal desorption sampler helped to transform the interaction between gas phase plasma and sample from gas-solid or gas-liquid to gas-gas, which greatly increased the sensitivity and stability especially for non-volatile sample (e.g. pesticides) compared with conventional LTP ionization source. The TD-LTP ionization source was coupled to a homemade rectilinear ion trap mass spectrometry. The operation parameters of the TD-LTP ionization source were optimized and the characteristic ions of 12 different pesticides were successfully obtained and investigated. Then the TD-LTP ionization source was connected with commercial ACQUITY TQD mass spectrometer, and the pesticide residue level in broomcorn was evaluated.
Document Type期刊论文
First Author Affilication中国科学院大连化学物理研究所
Recommended Citation
GB/T 7714
王爽,王喆,侯可勇,等. 热解析低温等离子体电离源用于糯高粱中农药残留的快速筛查[J]. 分析化学,2017,45(2):175.
APA 王爽,王喆,侯可勇,&李海洋.(2017).热解析低温等离子体电离源用于糯高粱中农药残留的快速筛查.分析化学,45(2),175.
MLA 王爽,et al."热解析低温等离子体电离源用于糯高粱中农药残留的快速筛查".分析化学 45.2(2017):175.
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