Jet fuel hydrogen content determination - low resolution nuclear magnetic resonance method

Hydrogen content is an important parameter indicator for evaluating the quality of aviation fuel. The basic characteristics of fuel combustion are mainly related to the total hydrogen content, which can lead to the formation of carbon deposits, an increase in exhaust gas and smoke, etc.

The traditional method of measuring hydrogen content is time-consuming and requires skilled technicians, which has many drawbacks.

Low resolution nuclear magnetic resonance methodIt is a very simple and accurate method for measuring hydrogen content. The determination of hydrogen content in middle distillate petroleum products by low resolution pulse nuclear magnetic resonance method meets the requirementsASTMStandard testing methods.

Jet fuel hydrogen content determination - low resolution nuclear magnetic resonance instrumentBasic parameters:

1. Magnet: permanent magnet;

2. Probe coil: 10-25mm probe, customized according to requirements;

The advantages of low resolution nuclear magnetic resonance methods are:

1Sample preparation is simple and fast;

2High precision and good repeatability;

3Easy instrument calibration;

4Non destructive testing allows for repeated testing of the same sample;

5Short measurement time;

Jet fuel hydrogen content determination - low resolution nuclear magnetic resonance methodinstrumentAdvantages:

1High signal sensitivity

2Small footprint

3Low maintenance cost

4No consumables, the NMR sample tube can be reused.

Fundamentals of Low Resolution Nuclear Magnetic Resonance Detection:

After emitting RF pulses of a certain frequency to excite the sample, data can be collectedFID(Free induction attenuation) signal.FIDThe strength of the signal and its correlation with the sampleHThe number of protons is proportional. Therefore, reference samples with known hydrogen content can be used for calibration to detect unknown samples.