|
HJ 637-2012 |
Qualitative approach |
Infrared spectra |
Instrument detection limit |
0.4mg/L petroleum standard solution |
The maximum range of the instrument |
800mg/L petroleum standard solution (0.5cm quartz cuvette) |
Method detection limit |
0.01mg/L oil |
Sample measurement range |
0 to 100% oil (enriched or diluted) |
Based on the measured value |
ρ=X•A2930+Y•A2960+Z•(A3030-A2930÷F) |
CH accuracy |
100mg/L±10% |
CH2 accuracy |
20mg/L±10% |
CH3 accuracy |
20mg/L±10% |
Accuracy of 100mg/L reference material |
±8% |
50mg/L standard substance accuracy |
±10% |
5mg/L standard substance accuracy |
±10% |
Repeatability |
< 1% |
Absorbance range |
0.00000 to 2.00000(A) logarithmic scale |
Absorbance minimum scale |
0.008(A) |
Measurement wavelength range |
3200nm to 3550nm |
Wavelength resolution |
2.5nm |
Wavelength repeatability |
±1nm |
Scanning wave number range |
3400cm-1 to 2400cm-1 |
Wave number accuracy |
±1cm-1 |
Extraction solvent |
Carbon tetrachloride and tetrachloroethylene |
Correlation coefficient |
r ≥ 0.999 |
Characteristic map scanning speed |
< 1 minute/time |
Zero stability |
No drift |
Quartz Cell Specifications |
0.5cm to 5cm |
Workstation connection |
Built-in computer |
Workstation system |
(No external workstation required) |
Best use temperature |
Windows 7 |
Optimum use humidity |
20°C to 25°C |
weight |
< 50% RH |
volume |
13.8kg |
power supply |
530mm × 380mm × 220mm |