A “Two-in-One” Tandem Immunoaffinity Column for the Sensitive and Selective Purification and Determination of Trace/Ultra-Trace Olaquindox and Its Major Metabolite in Fish Tissues by LC–MS/MS

Application of Ultrahigh Voltage Transformer Oil Purification Software Technology

“…(4) Low load heating software technology: heater design, need according to the flow speed and initial temperature, the influence of the fixed flow speed, heating tube surface heat load cannot too big, otherwise easy to cause high temperature oil cracking, so need to design the most advanced heating software technology, low load under the heating power of meet the needs of the cold weather, low thermal load, multistage tandem, heating pipelines special design, so that the oil in the heating pipe has a long residence time and ensure that there is no dead point of oil flow so that the oil from the entrance to the exit of uniform temperature rise. Completely solve the problems of local overheating caused by ordinary conduction heating, aging and cracking of oil, and harmful gas generation [15]. (5) Patent blowout preventer software technology: the level control system is designed to adjust the normal level of oil products.…”

Development of Pretreatment Method for Analysis of Vitamin B12 in Cereal Infant Formula using Immunoaffinity Chromatography and High-Performance Liquid Chromatography

“…Among them, HPLC–mass spectrometry is probably the most frequently used technique for determining vitamin B 12 in food and biological samples. To overcome the low sensitivity of the existing techniques, which is a limitation, an attempt was made to obtain food samples with low concentrations of vitamin and analyze them through pretreatment methods such as sample concentration using solid phase extraction or immunoaffinity columns ( Heudi et al, 2006 ; Iwase and Ono, 1997 ; Sun et al, 2016 ; Xie et al, 2019 ). Vitamin B 12 exists in free and bound forms in foods.…”

Colloidal Gold Immunochromatographic Assay for Rapid Detection of Carbadox and Cyadox in Chicken Breast

“…Several instrument methods have been established for detection of CBX and CYA, such as high-performance liquid chromatography with ultraviolet (UV) detection , and high-performance liquid chromatography tandem mass spectrometry (HPLC–MS/MS). − Because of its high accuracy and sensitivity, HPLC–MS/MS is used as the standard method for actual sample detection. However, such methods usually need complex sample pretreatment, expensive instruments, long detection times, and professional technicians.…”