Skip to main content

Analysis of Carbohydrates and Anions

By analyzing carbohydrates and anions, such as oxalate, chloride, sulfite, sulfate, and thiosulfate ions, a deeper understanding of the chemical balance can be obtained. Process control within the cellulose industry is crucial for reducing operational issues and ensuring a smooth production process.

Carefully monitoring the levels of these substances contributes to optimizing the use of chemicals in the process. For example, knowledge of oxalate ions can help prevent the formation of lime deposits in equipment, which can lead to operational disruptions and production delays. Similarly, monitoring chloride, sulfite, sulfate, and thiosulfate ions is important to ensure correct chemical mixtures and to avoid unwanted reactions that may affect product quality or process efficiency.

Having a clear understanding of the chemical balance in the process enables the company to make well-informed decisions and take actions to optimize production and minimize downtime. This can lead to increased efficiency, reduced production costs, and improved product quality, thereby enhancing the company's competitiveness and profitability.

Examples of anions:

  • halides (chloride, iodide, bromide)
  • acid oxides (sulphate, carbonate, bicarbonate, phosphate)
  • organic acids (acetate)
  • sulphide
  • borate
  • chlorate
  • oxalate

We measure carbohydrate composition in pulp: arabinose, galactose, glucose, mannose and xylose.

Incrustations are serious problems, not least when the use of pulp increases the degree of closure. It is common to check the total content of oxalate and the proportion of free oxalate ions to get an idea of ​​the risk of encrustation. Examples of common analyzes are sulphite, sulphate and thiosulphate ions which are found in, among other things, cooking liquids. It is also common to analyze the content of chlorate in connection with environmental analyzes for bleachers.

Paper and pulp samples analyse, among other things, the total content of chlorine, the total content of sulfur, organic chlorine and washable chloride and sulphate. For these analyses, ion chromatography is used for the final determination of chloride and sulfate.

Christina Wedin

Contact person

Christina Wedin


+46 10 722 32 47

Read more about Christina

Contact Christina
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.

* Mandatory By submitting the form, RISE will process your personal data.


Cannot find what you are looking for or are you curious about how we can help?

Send message
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.

* Mandatory By submitting the form, RISE will process your personal data.



Lignocellulose - Pulp Technology

Pulp production plays a central role in the bioeconomy, the transition towards a fossil-free society, and circular processes. The main part of the fiber line is the pulp mill, where wood is treated with chemicals to produce pulp w…
Test & demo

XPM - Paper pilot for research

The Experimental Small Paper Machine (XPM) constitutes an important paper pilot and is a cost-effective tool for conducting tests and evaluating new applications for pulp and chemicals. Its cost-effectiveness and ability to genera…

Efficient Evaluation of Antifoam Solutions in the Process Industry

By utilizing the customer's filtrate or other process fluids, we can efficiently evaluate various antifoam solutions without the need for extensive and costly full-scale trials.

Identify and Investigate Stone Cells, Stains or Shives

Stone cells, can occur in pulp containing aspen or spruce, which causes wear on process equipment. Stains and spores can cause defects in end products in cellulose products.

Demand for Effective Sulfur Purification Solutions

The increasing demand for efficient solutions for the collection and disposal of Dilute Non-Condensable Gases, (DNGC) has become more pronounced, especially with the EU's tightened regulations requiring industries to use the …

Optimize the Production with Comprehensive Raw Material Analysis

To ensure that production maintains the same or higher quality when transitioning to using new chemicals, it is important to have confidence in the new materials. Knowing that the new chemicals are as effective and reliable as the…

Analysis of total organic or inorganic carbon in solutions

TOC instruments that can, in addition to total organic or inorganic carbon in solutions, also measure total nitrogen. By, for example, analyzing total nitrogen in the bio - treatment's incoming and outgoing streams, you get i…

Method for analysis of green liquor with green liquor sludge

Separation of green liquor sludge from green liquor acts as the kidney of the chemical pulp processes. As the pulp processes are increasingly closed, the importance of following how and if the composition of the sludge changes to …