Analysis of black tea theaflavins by HPLC-photodiode array detector.; 红茶茶黄素类化合物的高效液相色谱-光电二极管阵列检测 2. In order to get high dynamic range of multi-channel spectra,A circuit design for photodiode arrays is developed optically. 为实现高动态范围多通道光谱测量,优化设计了光...
An improved sensitive procedure was also evolved for tramadol using a fluorescence detector system. A C18 column and a mobile phase constituted by methanol/phosphate were used. LODs were found to be 0.2 μg/mL, 0.1 μg/mL and 0.3 μg/mL for paracetamol, caffeine and tramadol hydrochloride, ...
2.5. HPLC-PDA Apparatus and Conditions The chromatographic system consisted of an Alliance W2690 separation module equipped with an online degasser, an automatic injector, and a W2487 photodiode array detector set at 420 nm for the detection of pristimerin and tingenone. Data were collected and ...
These processes are facilitated with precise quality inspection equipment such as the Brunker OES Metal Analyzers from Germany, Ultrasonic and Magnetic Powder Flaw Detector and high precision Hexagon Three Coordinate Measuring Machine and Farco Portable Three Coordinate Mea...