Biological samples should be extracted under acidic conditions to reduce the interference of endogenous substances (mostly acidic) in the biological matrix.
举一反三
- As is stated in the passage, learning ______. A: is generally a complex biological process B: has nothing to do with organic development C: is mostly independent of external environmental conditions D: is directed to changes that can be attributed to training
- Factors that contribute to calcium absorption, except(<br/>) A: Lactose B: 1,25 -(OH)2VD3 C: Acidic conditions D: Fatty acids
- When analyzing biological samples by LC-MS, one of the following methods that cannot eliminate the matrix effect is () A: Change the ionization method B: Increase the injection volume C: Optimize sample preparation methods D: Adjust the mobile phase composition
- Which one is not a type of biological asset according to CAS 5? A: Bearer biological assets B: Consumable biological assets C: Disposal biological assets D: Commonweal biological assets
- Hypokalemia can result in following conditions except for () A: Arrhythmia B: Flaccid paralysis C: Metabolic acidosis D: Acidic urine E: Flat and low T wave