GB/T 33067-2016 in English

Experimental Preparation:

• Make sure all reagents are of analytical grade and measure accurately when preparing standard solutions.
• The water used for ion chromatography should be ultrapure water with a resistivity of ≥18 MΩ·cm.
• It is recommended to equip an atomic absorption spectrophotometer and an inductively coupled plasma emission spectrometer to meet the needs of simultaneous multi-element detection.

Operation precautions:

• High-temperature treatment of samples must be carried out in a fume hood to avoid inhalation of harmful gases.
• When using lanthanum oxide as a deionizer, the amount added should be strictly controlled to prevent interference.
• For the determination of chloride ions, it is recommended to use a gradient elution method to improve separation efficiency.

Data processing:

• When establishing a working curve, it is necessary to ensure that the linear range covers the actual sample concentration to avoid errors introduced by extrapolation.
• It is recommended to use the least squares method for linear regression analysis to improve the accuracy of the results.
• The deviation of parallel determination results should be controlled within the specified range to ensure data reliability.