Controllable Sulfoxidation and Sulfenylation with Organic Thiosulfate Salts via Dual Electron- and Energy-Transfer Photocatalysis
作者:Yiming Li、Ming Wang、Xuefeng Jiang
DOI:10.1021/acscatal.7b02735
日期:2017.11.3
Sulfoxides and sulfides are two important functional groups in organic molecules, containing different valence states of sulfur. Both sulfoxidation and sulfenylation with common sulfurating reagents were successfully tuned via a facile variation of the atmosphere under photocatalyzed conditions. The sulfoxidation and sulfenylation transformations involved tandem electron-/energy-transfer and single-electron-transfer
Electronic ID database and detection method for pesticide compound in edible agro-products based on LC-Q-Orbitrap
申请人:CHINESE ACADEMY OF INSPECTION AND QUARANTINE
公开号:US11169128B2
公开(公告)日:2021-11-09
Disclosed is an electronic ID database and detection method for pesticide compound in edible agro-products based on LC-Q-Orbitrap. The electronic ID database includes a collection of various pesticides compound electronic ID information, intelligent matching values and collision energies. It is ordered according to the retention time in the electronic ID. The electronic ID contains pesticide compounds information, retention time, adduct ions information, fragment ions information, collision energies, and the optimal full scan mass spectrum. The detection method includes sample pre-treatment, setting LC-Q-Orbitrap operating conditions and sample pesticide residue screening. Setting LC-Q-Orbitrap operating conditions contain setting suitable chromatography and mass spectrometry conditions. In pesticide residue screening procedures, firstly, the retention time is used to find pesticide compounds electronic ID database. If matching, the corresponding electronic ID information is extracted. Then the intelligent matching value is compared, if it is same, the result is recorded and displayed, and the screening is completed.
本发明公开了一种基于 LC-Q-Orbitrap 的食用农产品中农药化合物电子 ID 数据库及检测方法。电子 ID 数据库包括各种农药化合物电子 ID 信息、智能匹配值和碰撞能量的集合。它根据电子 ID 的保留时间进行排序。电子 ID 包含农药化合物信息、保留时间、加成离子信息、碎片离子信息、碰撞能量和最佳全扫描质谱。检测方法包括样品预处理、设置 LC-Q-Orbitrap 运行条件和样品农药残留筛选。设置 LC-Q-Orbitrap 运行条件包括设置合适的色谱和质谱条件。在农药残留筛选程序中,首先利用保留时间查找农药化合物电子 ID 数据库。如果匹配,则提取相应的电子 ID 信息。然后比较智能匹配值,如果相同,则记录并显示结果,完成筛选。
Electronic ID database and detection method for pesticide compounds in edible Agro-products based on GC-Q-Orbitrap
申请人:CHINESE ACADEMY OF INSPECTION AND QUARANTINE
公开号:US11181512B2
公开(公告)日:2021-11-23
Disclosed is an electronic ID database and detection method for pesticide compounds in edible agro-products based on GC-Q-Orbitrap. The electronic ID database includes a collection of various pesticide compounds electronic ID information and is sorted according to retention time in the electronic ID. The electronic ID contains pesticide compounds information, retention time, mass spectrum, fragment ions information and intelligent matching value. The detection method includes sample pretreatment procedures, setting GC-Q-Orbitrap operating conditions and screening procedures for pesticide residues in samples, wherein setting GC-Q-Orbitrap operating conditions includes setting suitable chromatography and mass spectrometry conditions. In pesticide residue screening procedures, firstly, the retention time is used to find out pesticide compounds in electronic ID database. If there is a match, the corresponding electronic ID information is extracted. Then the intelligent matching value is compared, if it is less than threshold value, the result is recorded and displayed, and the screening is completed.
本发明公开了一种基于 GC-Q-Orbitrap 的食用农产品中农药化合物电子 ID 数据库和检测方法。电子标识数据库包括各种农药化合物电子标识信息的集合,并根据电子标识中的保留时间进行排序。电子 ID 包含农药化合物信息、保留时间、质谱、碎片离子信息和智能匹配值。检测方法包括样品前处理程序、GC-Q-Orbitrap 操作条件设置和样品中农药残留筛选程序,其中 GC-Q-Orbitrap 操作条件设置包括设置合适的色谱和质谱条件。在农药残留筛选程序中,首先利用保留时间在电子 ID 数据库中查找农药化合物。如果匹配,则提取相应的电子 ID 信息。然后比较智能匹配值,如果小于阈值,则记录并显示结果,完成筛选。
RECOMBINANT ORGANOPHOSPHOROUS ACID ANHYDRASE AND METHODS OF USE
申请人:MCDANIEL C. STEVEN
公开号:US20080206834A1
公开(公告)日:2008-08-28
The bacterial gene (opd) encodes an organophosphorus anhydrase which is capable of hydrolyzing a wide spectrum of neurotoxins ranging from insecticides to mammalian neurotoxins. The cloned gene has been expressed in a number of hosts and the purified enzyme has been characterized. These advances have led to a number of interrelated uses for the cloned gene and the recombinant enzyme including: detoxification of organophosphorus compounds; detection of organophosphorus compounds; protection of susceptible organisms from organophosphorus poisoning; and, detection of organophosphorus-detoxifying microorganisms.
ELECTRONIC ID DATABASE AND DETECTION METHOD FOR PESTICIDE COMPOUNDS IN EDIBLE AGRO-PRODUCTS BASED ON GC-Q-ORBITRAP
申请人:CHINESE ACADEMY OF INSPECTION AND QUARANTINE
公开号:US20210285921A1
公开(公告)日:2021-09-16
Disclosed is an electronic ID database and detection method for pesticide compounds in edible agro-products based on GC-Q-Orbitrap. The electronic ID database includes a collection of various pesticide compounds electronic ID information and is sorted according to retention time in the electronic ID. The electronic ID contains pesticide compounds information, retention time, mass spectrum, fragment ions information and intelligent matching value. The detection method includes sample pre-treatment procedures, setting GC-Q-Orbitrap operating conditions and screening procedures for pesticide residues in samples, wherein setting GC-Q-Orbitrap operating conditions includes setting suitable chromatography and mass spectrometry conditions. In pesticide residue screening procedures, firstly, the retention time is used to find out pesticide compounds in electronic ID database. If there is a match, the corresponding electronic ID information is extracted. Then the intelligent matching value is compared, if it is less than threshold value, the result is recorded and displayed, and the screening is completed.