Ultra-Performance Liquid Chromatography–Mass Spectrometry and Its Application toward the Determination of Lactose Content in Milk

2014 ◽  
pp. 405-426
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Ultra Performance Liquid Chromatography ◽  
Liquid Chromatography Mass Spectrometry ◽  
Chromatography Mass Spectrometry

Determination of seven anticoagulant rodenticides in human serum by ultra-performance liquid chromatography-mass spectrometry

2015 ◽  
Vol 7 (5) ◽  
pp. 1884-1889 ◽  
Author(s):  
Xinfeng Dong ◽  
Shuxuan Liang ◽  
Hanwen Sun
Keyword(s):  
Mass Spectrometry ◽  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Human Serum ◽  
High Performance ◽  
Ultra Performance Liquid Chromatography ◽  
Liquid Chromatography Mass Spectrometry ◽  
Anticoagulant Rodenticide ◽  
Chromatography Mass Spectrometry

Anticoagulant rodenticide residues (warfarin, coumatetralyl, diphacinone, chlorophacinone, brodifacoum, bromadiolone, and flocoumafen) in human serum were determined by sensitive high-performance liquid chromatography-mass spectrometry.

Determination of Residues of Cyantraniliprole and Its Metabolite J9Z38 in Watermelon and Soil Using Ultra-Performance Liquid Chromatography/Mass Spectrometry

2013 ◽  
Vol 96 (6) ◽  
pp. 1448-1452 ◽  
Author(s):  
Xiuqing Hu ◽  
Changpeng Zhang ◽  
Yahong Zhu ◽  
Min Wu ◽  
Xiaoming Cai ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Silica Gel ◽  
Ultra Performance Liquid Chromatography ◽  
Soil Samples ◽  
Liquid Chromatography Mass Spectrometry ◽  
Chromatography Mass Spectrometry

Abstract A method was developed for the determination of cyantraniliprole (HGW86) and its metabolite J9Z38 in watermelon and soil by ultra-performance LC (UPLC)/MS/MS. Target compounds were extracted by acetonitrile–water, cleaned up on a silica gel column, and determined by UPLC/MS/MS. Average recoveries of cyantraniliprole and J9Z38 in watermelon and soil at three levels (0.01, 0.1, and 0.5 mg/kg) ranged from 85.71 to 105.74%, with RSDs of 0.90–6.34%. The LOQs for cyantraniliprole and J9Z38 were determined to be 0.00021, 0.00015, 0.0010, and 0.00090 mg/kg in watermelon and soil samples, respectively. This method was used to determine the cyantraniliprole and J9Z38 residues in watermelon and soil samples for studies on their dissipation. The trial results showed that the half-lives of cyantraniliprole obtained after treatments were 1.1 and 4.1 days in watermelon and soil in Zhejiang, and 2.7 and 2.6 days in watermelon and soil in Hunan, respectively. The average levels of cyantraniliprole and J9Z38 residues in watermelon and soil were all <0.01 mg/kg within the 14-day interval after treatment.

scholarly journals Determination of sibutramine and phenolphthalein in weight­loss tea, coffee, and milk by ultra-­performance liquid chromatography mass spectrometry UPLC­-MS/MS

2019 ◽  
Vol 2 (4) ◽  
pp. 42-48
Author(s):  
Than Truong Van ◽  
Duy Nguyen Thanh ◽  
Kiet Ly Tuan ◽  
Vinh Hoang Ngoc ◽  
Hai Chu Van ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Formic Acid ◽  
Gradient Elution ◽  
Ultra Performance Liquid Chromatography ◽  
Distilled Water ◽  
Liquid Chromatography Mass Spectrometry ◽  
Ms Detection ◽  
Chromatography Mass Spectrometry

A rapid, simply and effective method using ultra­performance liquid chromatography coupled to mass spectrometry (MS) detection was developed in order to determine sibutramine and phenolphthalein in weight­loss tea, coffee, and milk. QuEChERS technique was used for cleaning­up sample matrices. The extracts were separated on C18 LC columns using the gradient elution of 0.1% formic acid in distilled water and acetonitrile. The recoveries at the concentration of 50 µg/kg were from 90.1 to 105.8% (with RSDR of 4.04 ­ 4.24%), from 91.9 to 100.2% (with RSDR of 3.20 ­ 4.71%), and from 86.5 to 100.5% (with RSDR of 5.17 ­ 5.49%) for weight­loss tea, coffee, and milk, respectively. Method quantitation limits were of 30 µg/kg.

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