What is the TOC
author: Otis
2022-11-17
Water is the source of human life, and without water, there is no living life. The development of human society depends on the supply of water. Of course, industrial production, scientific research is more inseparable from water, and the requirements for water quality is higher. With the development of the society, the industrial revolution has brought about great changes to the human society. Water pollution is becoming more and more serious, so scientific analysis instruments are needed to detect the water quality, so the TOC was born.
Water purity is crucial for many industries, such as pharmaceutical and semiconductor manufacturing and power generation. The presence of bacteria and other organic compounds in the water may indicate faulty filtration, storage, and other components and systems. Without filtering, these compounds pose significant challenges, ranging from damaging expensive industrial systems to negatively impacting product quality and threatening profitability. To detect the presence of these organic pollutants and to quantify their concentrations can help protect consumers, industry, and the environment.
what is the TOC?
TOC (total organic carbon): indicates the total organic carbon content in sewage, indicating almost all carbon-containing organic pollutants in water and solid samples. TOC is a measure of the total amount of carbon in organic compounds in pure water and water-based systems. TOC is a valuable analytical technology that can help businesses, and laboratories understand whether the water they use is pure enough to determine how well their solutions apply to their processes. Unless it is ultra-pure water, no matter how pure the water is, it will contain organic compounds such as carbon materials, but the key is to understand its content. Many organic compounds such as carbon materials are produced from water or purification production process, from which the materials are introduced into the water. They can also come directly from the workers involved in the process. It may also include natural or artificial compounds.
What are the relevant parameters of the TOC?
TC (total carbon): Total carbon refers to the total amount of all carbon in the sample, including inorganic, organic, and elemental carbon.
TIC (total inorganic carbon): Total inorganic carbon is the carbon that can be converted into CO2 in the sample. Total inorganic carbon includes: elemental carbon, carbon dioxide, carbon monoxide, carbide, cyanate, cyanide, and thiocyanate carbon content.
POC (purgable Organic Carbon): Blowable organic carbon is the organic carbon that can be blown out from a solution by a single stream of gas under the specified purge conditions (not standardized).
NPOC (non-purgable Organic Carbon): Non-blown organic carbon is that that remains in solution after purging samples by a stream of gas under specified purge conditions.
Why is measuring the TOC so important?
In the pharmaceutical industry, for example, high-purity water is a key ingredient used throughout the production process. Ensuring the purity of the water helps to eliminate the effects of bacteria and other organic compounds on product quality. If the water is polluted, the drugs produced will be contaminated, and if the drug is absorbed by human beings, the consequences are unimaginable. Organic compounds combine with other elements to produce molecules that cause harmful to the product and environment once water is discharged.
TOC has become an important parameter for use to monitor the overall level of organic compounds present. This occurs despite the absence of any direct quantitative correlation between total organic carbon and the total concentration of organic compounds present, reflecting the importance of having an easily measurable generic indicator of approximate levels of organic contamination. It also reflects the appeal of a parameter whose name sounds more basic than it actually is! In many cases, TOC is used as a continuous monitoring of organic content changes or as a lack of change.
Water purity is crucial for many industries, such as pharmaceutical and semiconductor manufacturing and power generation. The presence of bacteria and other organic compounds in the water may indicate faulty filtration, storage, and other components and systems. Without filtering, these compounds pose significant challenges, ranging from damaging expensive industrial systems to negatively impacting product quality and threatening profitability. To detect the presence of these organic pollutants and to quantify their concentrations can help protect consumers, industry, and the environment.
what is the TOC?
TOC (total organic carbon): indicates the total organic carbon content in sewage, indicating almost all carbon-containing organic pollutants in water and solid samples. TOC is a measure of the total amount of carbon in organic compounds in pure water and water-based systems. TOC is a valuable analytical technology that can help businesses, and laboratories understand whether the water they use is pure enough to determine how well their solutions apply to their processes. Unless it is ultra-pure water, no matter how pure the water is, it will contain organic compounds such as carbon materials, but the key is to understand its content. Many organic compounds such as carbon materials are produced from water or purification production process, from which the materials are introduced into the water. They can also come directly from the workers involved in the process. It may also include natural or artificial compounds.
What are the relevant parameters of the TOC?
TC (total carbon): Total carbon refers to the total amount of all carbon in the sample, including inorganic, organic, and elemental carbon.
TIC (total inorganic carbon): Total inorganic carbon is the carbon that can be converted into CO2 in the sample. Total inorganic carbon includes: elemental carbon, carbon dioxide, carbon monoxide, carbide, cyanate, cyanide, and thiocyanate carbon content.
POC (purgable Organic Carbon): Blowable organic carbon is the organic carbon that can be blown out from a solution by a single stream of gas under the specified purge conditions (not standardized).
NPOC (non-purgable Organic Carbon): Non-blown organic carbon is that that remains in solution after purging samples by a stream of gas under specified purge conditions.
TC=TIC+TOC=TIC+(NPOC+POC)
TOC=POC+NPOC
TOC=TC-TIC
TOC=TC-TIC
Why is measuring the TOC so important?
In the pharmaceutical industry, for example, high-purity water is a key ingredient used throughout the production process. Ensuring the purity of the water helps to eliminate the effects of bacteria and other organic compounds on product quality. If the water is polluted, the drugs produced will be contaminated, and if the drug is absorbed by human beings, the consequences are unimaginable. Organic compounds combine with other elements to produce molecules that cause harmful to the product and environment once water is discharged.
TOC has become an important parameter for use to monitor the overall level of organic compounds present. This occurs despite the absence of any direct quantitative correlation between total organic carbon and the total concentration of organic compounds present, reflecting the importance of having an easily measurable generic indicator of approximate levels of organic contamination. It also reflects the appeal of a parameter whose name sounds more basic than it actually is! In many cases, TOC is used as a continuous monitoring of organic content changes or as a lack of change.
Regulatory Guidance for TOC Measurement in Pharma Water 
TOC analyzer of medical water 
Determination of TOC in ecological restoration wastewater 
TOC analysis in hydropower stations 
Method experiment and error analysis of TOC in water by TOC folding meter 
How to detect the TOC in acidic wastewater？ 
Analysis of total organic carbon in domestic drinking water 
The role of TOC validation technology in the pharmaceutical industry