[5. Product Performance]
5.1 Working conditions
The ⑴ is used in the laboratory;
⑵ temperature: 15~27℃ (optimal: 18~21℃).
⑶ humidity: maximum relative humidity of 20%~80% (no condensation).
⑷ power supply requirements: voltage 220 V, frequency 50 Hz, 16 A
The ⑸ room should be clean and dust-free, with good exhaust air. Mass spectrometer should be placed smoothly on the workbench, without strong mechanical vibration around it
Dynamic and electromagnetic interference sources.
⑹ is well grounded with zero ground voltage <2 V.
⑺ This product is a vertical mass spectrometer movable all-in-one machine, in the fixed use in the laboratory environment
Do not move during the turn, can move after shutdown.
⑻ This instrument can reach a steady state through all necessary hardware diagnosis and tuning correction.2
The ⑼ normal operating atmospheric pressure range is 86kPa~106kPa.
5.4 The mass spectrometer ranges from 20 to 2000 D a.
5.5 Quality Accuracy
The mass of the ion measured by the mass spectrometer is in the range of ± 0.2 Da.
5.6 Mass stability
Within 24 hours, the mass spectrometer measured the resulting ion mass stability in the ± 0.05 Da range.3
5.7 Mass resolution
Half peak width can be set at 0.4,0.7, mass resolution not less than 1500.
5.8 Scan speed
The maximum scanning speed of the mass spectrometer was 10,000 D a / sec.
5.9 SIR scan speed
SRM scans with a speed ranging from 1 pair / s to 500 pairs / s.
5.10 SIR executable number
The number of single analysis SRM performers ranges from 1 pair to 10,000 pairs.
5.11 SIR resident time
The SRM residence time can be set in the range of 5 ms to 1000.0 ms.
5.12 Ion source
The ⑴ ion source can switch between ESI and APCI;
The ⑵ heating temperatures can be set from 0℃ to 650℃.
5.13, Detection function
5.13.1 Detection limit
The detection limit of the analysis was determined by using a certain amount of processed samples to be tested.
(1) The minimum detection limit of the sulfonamide solution in the ESI positive ion mode is 1pg.
(2) The minimum detection limit of chloramphenicol is 10 pg in the ESI negative-ion mode.
5.13.2 Linear
In view of the specific standard substances, a series of standard solutions are used to determine the linear range of the method.
(1) In the concentration range of 0.4 to 90.0 ng/mL, the linear correlation coefficient r should be> 0.990.
⑵ is within the concentration range l. 0 to 50.0 of chloramphenicol water in µ g/mL, and the linear correlation coefficient r should be> 0.990.
5.13.3 Repeatability
Determine succinylacetone and nonderivatized multiple amino acids, carnitine determination kit (tandem mass spectrometry), and tacromer
The reproducibility of different concentrations of substances to be tested, such as Si solution, glucool solution 1,5-dehydrated, and potassium bromate solution, with relative standard deviation
Poor RSD of 10.0%.4
5.13.4 Accuracy
Can meet one of the following indicators:
A concentration of 1.0 ng/mL ± 0.5 ng/mL was the absolute deviation of the measured value from the theoretical value
Should not be greater than 5.0%.
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