On-line TOC Analyzer: TOC-4110

We are monitoring the quality of raw water at the inlet of the facility in order to avoid any risk of polluting the drinking water. Generally, a drinking water purification facility monitors the pH, conductivity, temperature, dissolved oxygen, ammonium, TOC, and, in the urban area, the hydrocarbon in the water. The parameters to be monitored are selected by each facility, taking into account the nature of the source water.　　TOC in drinking water is regulated to be 2 mg/L or lower in France.

The city council invited tenders for an On-line TOC analyzer that is reliable, robust, precise, and easy to maintain. We also strongly required high oxidation performance of organic compounds, because we are concerned about TOC measurement of river water that contains large amounts of humic acid and fulvic acid. We found that the SHIMADZU TOC-4110 best fit our requirements. We also visited two users of SHIMADZU TOC analyzers in advance. One was a TOC-4110 used for waste water monitoring in a chemical plant, and the other was a TOC-V used for a drinking water application.

It has been almost 1 and a half years since the TOC-4110 was installed, and it satisfied all our initial testing requirements. Now, I like it very much because it requires few maintenance labor and cost. The data is stable and consistent to the data obtained in the laboratory.

First, I like the performance of the TOC-4110 when measuring samples that contains a large amount of BOD and fulvic acid. Another advantage is its sensitivity. Actually I can test the produced water (i.e. drinking water) with precision of 5% or lower, without modifying any analytical parameters. Since it is equipped with off-line sampling capability, it is useful in this regard in our facility. However, I am going to use the off-line sampling port for the second on-line stream in the near future. This is to monitor the TOC in produced water.

The on-line TOC monitoring of raw water at a drinking water facility is becoming more important in order to avoid any unexpected contamination of the produced water. A TOC analyzer that uses the catalytic combustion technique, like the TOC-4110, is suitable and widely used for this application because of its high detection performance of difficult-to-oxidize organic substances. The TOC-4110 was succeeded by the new TOC-4200 in November 2011. Equipped with many advanced features, the TOC-4200 is a versatile on-line TOC analyzer which was developed based on the TOC-4110 and feedback from the field.

This TOC-4110 was sold and is always supported by SHIMADZU FRANCE SAS. SHIMADZU FRANCE SAS offers a full lineup of analytical instruments for the chemical analyses and the life sciences.