The use of ICP in the chlor-alkali industry

Currently, in the ion-exchange membrane caustic soda production process, ICP analysis is generally used for brine

Reply to 2# liu654: Does your factory have an ICP? I would like to ask about the steps for the measurement; the results I obtain using my current method vary greatly each time

This post was last edited by qugd on 2010-12-5 at 19:24. According to the original poster’s question, chlor-alkali could refer to a plant or an animal, as only organisms can reproduce through the process of producing offspring. How is it possible to struggle with writing such simple Chinese characters? The measurement steps of another instrument or analysis method have no inherent connection to whether this analyzer is good or not. One is the operational process of the analysis method, and the other is the product quality of the analysis instruments; these two things are actually connected, and discussions take place using concepts such as \"types,\" which is quite sophisticated. The original poster graduated from a normal university; if they go to teach at a school, it will only bring trouble to the students.

30 Determination of the contents of Ca2+, Mg2+, Fe3+, Ba2+, Sr2+ etc. in secondary saline solutions 30.1 Method summary Under acidic conditions, a plasma atomic emission spectrometer is used to measure the intensity of the characteristic electromagnetic radiation emitted by the test solution, and the contents of calcium, magnesium, iron, barium, strontium, etc. are determined using the standard addition method. 30.2 Reagents and solutions: Mixed standard solutions are prepared using standard solutions of the element to be tested (i.e., single elements); for example, Ca2+: 4 mg/L ； Mg2+: 0.4 mg/L ； Fe3+: 2 mg/L ； Ba2+: 4mg/L ； Sr2+: 1 mg/L ； Al3+ : 0.4 mg/L ； Ni2+: 0.4 mg/L ； Pb2+: 0.5mg/L. 30.3 Instruments and equipment: Plasma atomic emission spectrometer (ICP light source) 30.4 Analysis procedure: Adjust the ICP to operational status in accordance with the instrument’s operating procedures, and activate the analysis method. Add 5 ml of the mixed standard solution to a 50 ml volumetric flask that has been treated with nitric acid; add 5 ml of subboiling water or Roche pure water to another volumetric flask, add 1 ml of HCl (1+1), dilute to the mark with secondary saline, and mix well. Follow the instructions provided by the instrument, and the results will be obtained through computer processing.

Reply to 1# Penicillin: Use 4 plastic volumetric flasks of 50 ml each, and add 0.00 ml, 500 µl, 1000 µl, and 3000 µl (10 PPM standard) respectively; then fill the flasks to the mark with the sample for measurement.

Now, the water produced by some household pure water machines is also very clean and can be used for this purpose.