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Determination of acrylonitrile content below 3mg/kg Headspace Gas Chromatography (Ammonia Phosphorus Detector) (2)
Time of Update: 2022-01-06
2mg), put it into a 25mL or 50mL sample bottle, use a pipette to add 5mL of the internal standard solution prepared in accordance with A.
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Determination of acrylonitrile content below 3mg/kg Headspace Gas Chromatography (Ammonia Phosphorus Detector) (1)
Time of Update: 2022-01-06
Reagents>For reagent purity and safety precautions, see Chapter 4 of this standard . >A. 2. 1 1,2
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Determination of acrylonitrile content less than 3mg/kg. Headspace gas chromatography (Amphos detector) (3)
Time of Update: 2022-01-06
6. 1, the meaning of each symbol in the formula is:h'a—The peak height of acrylonitrile in the calibration solution prepared in A.
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Increased carbon dioxide brings hazardous gas detectors to help out
Time of Update: 2021-12-09
[ Focus on Chemical Machinery and Equipment Network ] Due to the blockade policies implemented by various governments during the new crown pneumonia pandemic, global carbon dioxide emissions will drop sharply in 2020 .
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Precautions for the use of gas chromatography FPD and ECD detectors
Time of Update: 2021-09-08
(3) The gas flow rate of FPD is generally 60-80 mL/min for hydrogen, 100-120 mL/min for air, and 20-25 mL/min for the sum of makeup gas and column flow .
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Linzi Crude Oil Depot organizes emergency drills for gas pipeline leakage
Time of Update: 2021-09-06
This exercise tested the emergency response and disposal capabilities of the oil depot in the event of gas pipeline leakage, and laid a solid foundation for rapid, accurate and effective response to various emergencies .
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8 sets of new hydrogen sulfide detectors added to the Puguang Gas Field pipeline
Time of Update: 2021-08-28
in the high-consequence area of the gathering and transportation pipeline to facilitate the timely occurrence of hydrogen sulfide gas leakage around the pipeline. Monitoring to ensure the safety of the lives and property of residents around the gas
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The Ministry of Ecology and Environment has set up pilot tests to test the environment. These gas detectors are very useful.
Time of Update: 2021-08-15
signal, high sensitivity and precision, etc. The flameproof wiring method is suitable for all kinds of Hazardous locations . The methane detector adopts
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Cleaning and maintenance of three gas chromatography detectors
Time of Update: 2020-11-24
solution is relatively clean. When a solvent cannot be washed, the high boiling point solvent can be used for immersion cleaning according to the nature of the dirt, and then repeatedly washed with a low boiling point solvent. After washing the heat
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Where is the gas chromatography prone to gas leakage?
Time of Update: 2020-11-17
drop to zero, then do not leak gas, otherwise leakage. or observe the system pressure meter, open the gas source, adjust the output pressure between 0.3-0.6MPa, iso-air stability, block the air outlet, and then close the main valve, within half
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How to use combustible gas detector?
Time of Update: 2019-12-13
After installing the through wire, check whether the value display of combustible gas detector is normal.
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How to use toxic gas detector
Time of Update: 2019-11-29
2. Pay attention to the concentration measurement range of the detection instrument.
During the use of the toxic gas detector, pay attention to the prevention of electromagnetic interference.
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Potential safety hazard of chemical industry park how to effectively detect the leakage of combustible gas?
Time of Update: 2019-09-04
• single gas detector: ppm level detection (at the concentration of PPM, many gases may have reached the level of spontaneous combustion and self explosion), low selectivity leads to misjudgment.
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What are the factors that affect the reading of gas detector
Time of Update: 2019-01-03
However, if the temperature fluctuates violently, the gas detector sensor reading may drift.
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Microchip can detect methane leakage in oil and gas wells in real time
Time of Update: 2017-04-13
IBM, together with researchers from Harvard University and Princeton University, has designed a 5mm square micro sensor chip to detect methane emissions in real time and sustainably, according to the official website of Scientific American.
