DB-5MS石英毛细管色谱柱用于常见挥发性有机物检测
At first, a high quality model (R=0.988, F=253.89 for DB-5 and R=0.983, F=164.721 for DB-17 column) was generated for two columns separately, using only calculated descriptors and multiple linear regression techniques. Then a combined model, added a polarity term of stationary phase (M)...
As a stationary phase, this polymer and the specific phase ratio for the DB-624 wall coated open tubular (WCOT) column was designed particularly for volatile organic analysis (USEPA-624) [5]. Since then, it has been found to be useful in a number of difficult chromatographic applications. ...
Phase Column hardware Film Thickness Ø int. Length GC column, 7" cage AG123-1334 123-1334 Capillary DB-624 Fused silica 1.80 µm 0.32 mm 30 m Each $860.00 - + GC column, 7" cage AG125-1334 125-1334 Capillary DB-624 Fused silica 3.00 µm 0.53 mm 30 m Each ...
Benzo(b)fluoranthene (BbFA) and benzo(j)fluoranthene (BjFA) often show coelution on the com- monly used 5% phenyl methylpolysiloxane stationary phase GC column. The resolution of benzo(b,j,k)fluoranthene is 1.41 3 and 1.63 respectively, meeting the requirement of analysis. The three benzo(...
Agilent’s industry-leading manufacturing process, combined with optimized chemistries and design advancements, improve both inertness and trace-level sensitivity with proven column-to-column reproducibility. This is accomplished with no trade-offs in bleed or stationary phase selectivity. The industry’s ...
3,Run Column 时所选用之solvent 系统应配合选用硅胶(stationary phase)的用量及sample(样品)的量来选择其极性组合,一般而言欲分离之主样品Rf 值以0.15-0.25为宜。 4,一般最常用之 Solvent 依其极性大小依次为n-Hexane(or pet.ether)<EtOAc<MeOH,组合为最通用,其他如Ether 也...
The value column is an incrementing count (it only increases and never resets) Sensor_Telemetry table timestampsensor_idvalue 2022-01-01 00:00:00 5 3 2022-01-01 00:00:01 5 5 2022-01-01 00:00:02 5 6 ... ... ... 2022-01-01 01:00:00 5 675 I have another ta...
5、Stationary phase Column length (GC): 可以在±70%范围内调节。 Column length (HPLC): 见粒径项下。 Column inner diameter (HPLC): 如果线速度保持恒定,可以调整。见HPLC流速。 Column inner diameter (GC): 最大可调整至±50%。 Film thickness (capill...
Each injected solution was separated with the Acquity UPLC HSS T3 column. The UHPLC analysis followed a gradient elution program. High-resolution mass spectrometry analyses were performed with a heat electrospray ionization (HESI) source under both positive ion mode and negative ion mode. The ...